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Thread: VBA Input Pop up Boxes: Application.InputBox Method versus VBA.InputBox Function

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    VBA Input Pop up Boxes: Application.InputBox Method versus VBA.InputBox Function [Solved]

    VBA Input Pop up Boxes: Application.InputBox Method versus VBA.InputBox Function

    Hi
    Recently I have been trying to revise my knowledge of various ways to get simple user interaction with simple Pop ups. ( Later I will go into the “custom route” and learn about UserForms )
    I started at a fairly ignorant level of knowledge and I thought the notes that I made for myself could be useful for someone learning about these things, so I am sharing them here. I have noticed some problems / Bug “features” , so I might try to extend the notes later to try to share an alternative semi – self made solution using the available collection of supplied with Windows small additional programs ( API, User 32 dll stuff ) that can also be accessed in a “user customerised” way in VBA.
    But Initially , I am talking about these two things:
    https://msdn.microsoft.com/en-us/vba...x-method-excel
    https://msdn.microsoft.com/en-us/lib...ffice.11).aspx
    https://msdn.microsoft.com/en-us/vba...utbox-function
    )

    Bug Features
    The comparison of these two similar things is complicated by various Bugs in Application.InputBox . Often when one gets caught out for the first time by such a Bug , then one learns of the two similar alternatives available in VBA to get an Input Pop up Box

    I have never quite got a clear understanding or definition of the difference between a Method and a Function in these things. However in this case that is probably the key to understanding the difference.
    My conclusion at the end is that the Application.InputBox Method is something of an abortion, and I hope to give later a simple alternative to one of its most popular uses, that of returning the range object of a selection made by the user in a worksheet.

    Preparations Some preliminary stuff. ( Help File )
    To help test check and understand the differences it is necessary to do some preliminary stuff which due to other Microsoft Bug features may not work. Never mind.
    Follow the following instructions. You need to get a “working” Microsoft help type Window to pop up. If you cannot get it to work then never mind: It just means that you will have to forgo on a demo of one of the features.
    So, here we go… Prepare a new File, or use a spare one. Important is that you save it as .xls, not .xlsm. It would be useful if you have access to two Excel versions:
    Excel 2003 or earlier
    and
    Excel 2007 or later.
    If not, no worries – you will just have to forgo on a few other experiments.

    Having got a File saved somewhere ( it does not matter where it is saved ), then download this file:
    https://app.box.com/s/bx2pkvtemsppscz60rd6f430wm89c6fj This is a “.chm Microsoft Help fileIt has the name _ AnyFileName.chm
    Important is to save it in the same folder as your file. Try and open that file
    either
    _1 directly
    Or
    _2 by double clicking on the file
    GetOpen_1_2.JPG https://imgur.com/gRjn0HJ

    Or
    _3 Use this code
    Code:
    Sub HelpGetItUp_3()
     Application.Help HelpFile:=ThisWorkbook.Path & "\AnyFileName.chm", HelpContextID:=2
    End Sub
    You should see this:
    HelpGetUpBollox.JPG https://imgur.com/KdKOYWr

    If that does not work… you could try to sort it out based on the information here: https://www.excelforum.com/excel-new...ml#post4827566
    If you can not get that to work, then no worries – you will just have to forgo on a few other experiments.

    InputBox Method and Function. Method or Function
    I think loosely a Function is defined as some sort of process, Sub code , set of instructions or some pre defined way of doing something. In normal life a Method is just another word for that. In programming the word Method might loosely be described as a Function “within” an Object and/ or a Function “using” things in an object. There lies the crux of the difference.
    So if there is any truth to that last explanation, then the basic or more fundamental or more “lower level” of the two things can thought of as being the….
    Input Box Function.
    This returns a string of what the user types into the Pop up box which should come up when you use a code of this form:
    Dim strReturned As String
    _ Let strReturned = InputBox(Prompt:="Type Something in", Title:="MyBox", Default:="Something", xpos:=100, ypos:=100, HelpFile:=ThisWorkbook.Path & "\AnyFileName.chm", Context:=2)
    A code like that should give something like this:
    InputBoxFunctionWithHelpButton.JPG https://imgur.com/htritBi

    As far as I know all is well understood and works with the VBA InputBox Function.

    One thing worth having a quick play around with at this stage is those x y positional numbers
    It should result in the box coming up in different places. In the next post I have a demo code, and the first short part, Rem 1 , has those code lines. So.. open your .xls file in Excel, hit Alt+F11 to get into the VB Editor, paste in that code into the large Code window, then run the code, preferably in Debug Mode, F8, for this initial selection. Then you can hit the stop button ( VBEditorStopButton.JPG https://imgur.com/0o8Ojqm ), edit those positional number values, the re run the code.
    _._______________________

    For Input Box Function You do not have any chance to select anywhere in the spreadsheet. You simply have to enter a string value into the Pop up Input Box Input Bar. The technical term here is along the lines of “The VBA InputBox Function is always Model” . In English that means you can’t do anything else in the worksheet until you either close the pop up Input Box or Hit the OK Button. Effectively the Excel Window is “hung up”, or “control is passed” to the Pop up Box
    This is perhaps a very important point , particularly in discussions of the difference in the two

    Application Input Method
    From now on it is a bit of a complicated mess because of Bug features.
    The basic idea is that within the object that is the current instance of the (Excel in this case ) object ( known loosely as the “Application” ) that the VBA InputBox Function is used somehow. That is to say , one might imply that the Application Input Method somehow uses the VBA InputBox Function “within it”, that is to say it is using for it data / information from the Application object.
    I doubt anyone knows much better then that description for sure.
    And I question whether there is any truth at all to that.
    Clearly who ever “invented” it doesn’t know what is going on. If he or she did, then it might work consistently or the Bug features which have been around for about 10 years might have been fixed. I only have Excel 2003, 2007 and 2010. As far as I can see the Bug features started at Excel 2007 for the Positional arguments, and are still there in Excel 2010. If anyone following this and trying the experiments on a more recent version can add anything here then that would be welcome.
    But the Help option arguments do not appear to work in any version for the Application.Input Box Method. So probably the Application Input Method was flaky right from the start and got worse as time went on.

    Very briefly for now, and just as a quick approximate statement: The difference in the two things is that the Method has an extra last optional argument and if that is included then what is actually done is a bit more complicated ( I would suggest it is a mess actually – hence someone messed up and that causes the Bug features ).

    Before we go full out in using the Application Input Method, consider the following that is often seen in Microsoft documentation:
    ……. that Application.InputBox calls the InputBox method; InputBox with no object qualifier calls the InputBox function.
    I don’t think this makes any sense, or at least it is very unclear.
    One reasonable interpretation is that the box that comes up probably does not have a lot to do with the VBA InputBox Function once the last optional argument of type is given. Or visa versa, a reasonable interpretation of that might reasonably be that without the extra last optional Type:= argument then effectively the InputBox function is done.
    A short bit of experimenting suggest however that in any situation ( that is to say any argument selection used, even the minimum of just the first ( only not optional ) Prompt:= ) , something significantly different is going on with the Application.InputBox Method compared to the VBA InputBox Function.

    Regardless of whether the last argument, Type:= , is given or not, clearly what happens is significantly different in the case of Application.InputBox Method compared to VBA InputBox Function

    I did some experimenting, and my observations are that for any options combination you have, with Application.InputBox Method , an additional possibility to add data other than just entering into the Box input bar: You can select the spreadsheet: Although the code that fires up the Application.InputBox Method “waits” , it is possible to make a selection in the spreadsheet. If a selection is made then the address is shown in the absolute column letter and row number notation ( Like $A$1:$B$6 etc.. ) appears automatically in the pop up box input bar. It would appear that some coding determines what to return based on the area selected and the Type:= . ( If no Type:= is given the default type is taken as Text (a string), ( but as noted, the Application.InputBox Method does not then simply work as if it were the VBA InputBox Function )

    A full code is given in the next post in which a section, Rem 3 , loops through types allowing an input for each type to be made. ( As is standard for the Application.InputBox Method you can make an entry by typing into the pop up box input bar, or make a spreadsheet selecting in which case the pop up box input bar is automatically filled with the selection address in the absolute column letter and row number notation.
    Note that for the case of a returned range object, there will not be an error in assigning the returned thing to a variant ( Let Var = , or Var =) , ( rather than a more conventional in this case of Setting it to a range object) , as this is a typical case where VBA returns the default property of .Value from the range object. However the code has to do a bit of juggling about for this return and in the case of an Array return in order to show those values in a single displayable String

    After selecting OK , a message box attempts to show what is actually returned from the Application.InputBox Method.
    ( If you have any difficulties with the help optional arguments_...
    HelpFile:=ThisWorkbook.Path & "\AnyFileName.chm", Context:=2
    or
    HelpFile:=ThisWorkbook.Path & "\AnyFileName.chm", HelpContextID:=2
    -…. Then if you cannot get the workarounds ( https://www.excelforum.com/excel-new...ml#post4827566 ) to work then simply remove them and ignore the help stuff
    )

    _.______________

    My guess is that there is a messy routine full of bug features which looks initially
    either
    at what is inputted by the user in the Input Box Input Bar,
    or
    if a selection is made by the user in a worksheet, the address is placed into the Input box, and a note is made of the actual range object that is referred to by the selection.

    Thereafter an attempt is made to give a Type correct return. Depending on exactly what is inputted, this may or may not be accepted. This last point is reasonable I think.
    As example: if type Number is specified in the options ( ____, Type:=1 ) _ ‘ Number ) then
    an error occurs if a string is inputted or if a cell is referenced which has a string in it. A reference to an empty cell will result in _ 0 _ for this case. This is consistent with assigning a Number variable to the .Value of a range object.
    If no string is entered into the Input Box Input Bar then Application.InputBox Method issues a pop up warning that an incorrect entry has been made. You are able then to correct this by adding a correct entry. It is not clear from this exactly what process then follows, but clearly it is a bit different to the user worksheet area selection case.
    For all but the Type:= range and Type:= array , and Type:= formula, a multi cell selection results in just the top left cell being considered.


    A full listing of what happens for different entries for each type would take a book. I might do that later. For now it is probably best to experiment with the code for the thing you are trying to do and variations thereof. Better still, don’t use the Application.InputBox Method as it is too flaky / full with bug features.

    In the over next post I may try some alternatives, but not yet the UserForm. For now I am interested in the more standard/ simpler alternatives.

    Demo code in next post and a few other places possibly: ( https://www.excelforum.com/developme...ml#post4829620
    https://pastebin.com/58U8eagx
    )

    References in the next post also.
    Last edited by DocAElstein; 02-19-2018 at 04:44 PM.
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    Senior Member DocAElstein's Avatar
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    Code:
    '  https://support.microsoft.com/de-de/help/199824/how-to-get-the-address-of-variables-in-visual-basic  '  http://vb.mvps.org/tips/varptr/   '    https://www.mrexcel.com/forum/excel-questions/35206-test-inputbox-cancel-3.html
    '
    '     ( Ctrl+Pause will usually stop this program )         https://www.excelforum.com/development-testing-forum/1215283-gimmie-ta-codexamples-call-in-the-appendix-posts-2018-no-reply-needed-but-if-u-2.html#post4828681
    Sub UpInputBox()  '  Note that you should make the Preparations here:                                                                                                            '         https://www.excelforum.com/excel-new-users-basics/1099015-vba-application-inputbox-option-helpfile-helpcontextid.html#post4827572                                                                                                                              '  https://www.click2trial.com/sure-thin-garcinia/
    Rem 1 ' VBA Input Box Function works in all Excel versions so far.                                                                                                                       ' Application.Help HelpFile:="G:\Excel0202015Jan2016\ExcelForum\UserForm\HTML Workshop\chmFillesProjectFiles\Jan21\AnyFileName.chm", HelpContextID:=2
    Dim strReturned As String      '  "Pointer" to a "Blue Print" (or Form, Questionaire not yet filled in, a template etc.)"Pigeon Hole" in Memory, sufficient in construction to house a piece of Paper with code text giving the relevant information for the particular Variable Type. VBA is sent to it when it passes it. In a Routine it may be given a particular “Value”, or (“Values” for Objects).  There instructions say then how to do that and handle(store) that(those). At Dim the created Paper is like a Blue Print that has some empty spaces not yet filled in. A String is a a bit tricky. The Blue Print code line Paper in the Pigeon Hole will allow to note the string Length and an Initial start memory Location. This Location well have to change frequently as strings of different length are assigned. Instructiions will tell how to do this. Theoretically a specilal value vbNullString is set to aid in quich checks.. But..http://www.mrexcel.com/forum/excel-questions/361246-vbnullstring-2.html#post44116
     Let strReturned = InputBox(Prompt:="") ' This is the minimum option. Here and in the next line you can only put infomation in the box bar
        If StrPtr(strReturned) = 0 Then Exit Sub ' If OK is clicked with no entry then a zero length string is returned. If Cancel is selected then the string variable does not yet have an address  https://www.mrexcel.com/forum/excel-questions/917689-passing-array-class-byval-byref.html#post4412382      https://www.mrexcel.com/forum/excel-questions/35206-test-inputbox-cancel-2.html?highlight=strptr#post2845398
    Dim strReturned2 As String  '  '  http://www.excelfox.com/forum/showthread.php/1828-How-To-React-To-The-Cancel-Button-in-a-VB-(not-Application)-InputBox
     Let strReturned2 = InputBox(Prompt:="Type Something in", Title:="MyBox", Default:="Something", xPos:=1000, yPos:=1000, HelpFile:=ThisWorkbook.Path & "\AnyFileName.chm", Context:=2)
        If StrPtr(strReturned2) = 0 Then Exit Sub
    Rem 2 ' Application Input Box Method with limited used optiional parameters
    Dim VarReturn As Variant ' Use Variant so as to allow for whatever return that the Application Input Box Method may return    https://msdn.microsoft.com/en-us/library/office/gg251422.aspx
     Let VarReturn = Application.InputBox(Prompt:="") ' This is the minimum, BUT ALREADY we can now select a range in the worksheet
     Let VarReturn = Application.InputBox(Prompt:="", HelpFile:=ThisWorkbook.Path & "\AnyFileName.chm", HelpContextID:=2) ' In Excel 2007+ the help options do not work. Nor do they in Excel 2003
     Let VarReturn = Application.InputBox(Prompt:="", HelpFile:="Any Fink you like ", HelpContextID:=346326) ' In Excel 2007+ the help options appear not to be referrenced. Nor do they in Excel 2003
     Let VarReturn = Application.InputBox(Prompt:="", Left:=100, Top:=100) ' In Excel 2007+ the positional arguments have no effect and the Input box comes up where it was the last time it came up. In Excel 2003 the positional arguments appear to work
    
    Rem 3 ' Full options in Application InputBox
    Dim dicLookupTableMSRD As Object ' For 7 type options in last Optional argument ( and 1 example of a combination )
     Set dicLookupTableMSRD = CreateObject("Scripting.Dictionary") 'Late Binding MSRD   In this case Dictionary and Scripting.Dictionary are the same. You can be sure of that because removing the reference to the Scripting runtime makes the Dictionary code fail. When you declare a variable as Dictionary, the compiler will check the available references to locate the correct object. There is no native VBA.Dictionary incidentally, though it is of course possible to create your own class called Dictionary, which is why I used the phrase "in this case".    https://www.excelforum.com/excel-pro...ml#post4431231   http://www.eileenslounge.com/viewtop...=24955#p193413        https://www.excelforum.com/excel-pro...d-formats.html       http://advisorwellness.com/blue-fortera/
     Let dicLookupTableMSRD.CompareMode = vbTextCompare ' Compare mode property  vbTextCompare is case unnsensitive. This must be done at the point here that the dictionary is empty
     dicLookupTableMSRD.Add Key:=0, Item:="Formula" ' if you make a selection it
     dicLookupTableMSRD.Add Key:=1, Item:="Number"  ' Like a Double, Long, Single  etc.
     dicLookupTableMSRD.Add Key:=2, Item:="Text (a String)"
     dicLookupTableMSRD.Add Key:=1 + 2, Item:="Number or Text" ' An example of one possible combinination
     dicLookupTableMSRD.Add Key:=4, Item:="Logical value (True or False)" '   A logical value (True or False)
     dicLookupTableMSRD.Add Key:=8, Item:="Range object" '  Note: usually you would then Set=InputBox for this option only. However, for the case of a returned range object, there will not be an error  in assigning the returned thing to a variant ( Let Var = , or Var =) , ( rather than a more conventional in this case of Setting it to a range object) ,  as this is a typical case where VBA returns the default property of .Value from the range object. However the code has to do a bit of juggling about for this return and in the case of an Array return in order to show those values in a single displayable String
     dicLookupTableMSRD.Add Key:=16, Item:="Error value" '  An error value, such as #N/A
     dicLookupTableMSRD.Add Key:=64, Item:="Array"
    Dim TypeOptions() As Variant: Let TypeOptions() = dicLookupTableMSRD.keys ' This Method returns an Array in Variant types - The variant type is necerssary as those keys could have been almost anything apart from Arrays. So we had to declare the Array to get the stuff back Variant type
    Dim Stear As Variant
        For Each Stear In TypeOptions()
        Dim ThingReturned As Variant
         Let ThingReturned = Application.InputBox(Prompt:="Type " & CLng(Stear) & ", " & dicLookupTableMSRD.Item(Stear) & "", Title:="MyBox", Default:="Something", Left:=100, Top:=100, HelpFile:=ThisWorkbook.Path & "\AnyFileName.chm", HelpContextID:=2, Type:=CLng(Stear))
            If Not Stear = 4 And ThingReturned = False Then Exit Sub ' We can do a check here for if the user hit Cancel for all but the Type:= logical value   as a logical value of  false is returned for if the cancel is selected
            If IsArray(ThingReturned) Then ' We have a 2 dimensional array even in the case of a single row or single column as that is how VBA holds array returned from a spreadsheet area
            Dim strThingsReturned As String: Let strThingsReturned = "" ' If this is not reset to "" then the string build for the second time ( the Array type ) will include the first string built von the Range, that is to say the Range defaulting to Range.Value      'Let strThingsReturned = VBA.Strings.Join(ThingReturned, ", ")This is no good to us as the first argument must be a 1 dimension Array
            Dim rIndx As Long, cIndx As Long '  Long is very simple to handle, - final memory "size" type is known (123.456 and 000.001 have same "size" computer memory ) , and so a Address suggestion can be given for the next line when the variable is filled in.  '( Long is a Big whole Number limit (-2,147,483,648 to 2,147,483,647) If you need some sort of validation the value should only be within the range of a Byte/Integer otherwise there's no point using anything but Long.--upon/after 32-bit, Integers (Short) need converted internally anyways, so a Long is actually faster. )       https://www.mrexcel.com/forum/excel-questions/803662-byte-backward-loop-4.html
                For rIndx = 1 To UBound(ThingReturned, 1)
                    For cIndx = 1 To UBound(ThingReturned, 2)
                     Let strThingsReturned = strThingsReturned & ThingReturned(rIndx, cIndx) & ", "
                    Next cIndx
                 Let strThingsReturned = VBA.Strings.Left$(strThingsReturned, (Len(strThingsReturned) - 2)) ' Remove the last ", " in each complete row
                 Let strThingsReturned = strThingsReturned & ";" & vbCrLf ' go down a line for next row
                Next rIndx
             Let strThingsReturned = VBA.Strings.Left$(strThingsReturned, (Len(strThingsReturned) - 3)) ' takes off the last vbCr & vbLf & ";"
             Debug.Print strThingsReturned: MsgBox Prompt:="Returned using option Type:=" & Stear & " ( " & dicLookupTableMSRD.Item(Stear) & ")" & vbCrLf & "(and held in the assigned Variant variable is """ & TypeName(ThingReturned) & """) is:" & vbCrLf & "values of " & vbCrLf & strThingsReturned
            Else ' Single value is returned
             Debug.Print ThingReturned; " "; TypeName(ThingReturned): MsgBox Prompt:="Returned using option Type:=" & Stear & " (" & dicLookupTableMSRD.Item(Stear) & ")" & vbCrLf & "(and held in the assigned Variant is Type Name """ & TypeName(ThingReturned) & """) is:" & vbCrLf & CStr(ThingReturned) ' The CStr appears only to be necessary for the case of an error in ThingReturned in the Message box. Debug.print seems to convert it to a string. All other things are converted to a String
            End If
        Next Stear
    End Sub



    http://www.excelfox.com/forum/showth...tion)-InputBox
    https://www.mrexcel.com/forum/excel-...ml#post4411660
    https://www.excelforum.com/excel-pro...e-results.html
    https://www.mrexcel.com/forum/excel-...ml#post4412382
    http://codevba.com/excel/application...m#.Wmn5adThBhF
    http://www.mrexcel.com/forum/excel-q...ox-method.html
    http://www.vbforums.com/showthread.p...3-but-not-2007
    https://stackoverflow.com/questions/...excel-vba-why/
    https://www.excelforum.com/developme...ml#post4608252
    https://www.excelforum.com/developme...ml#post4618975
    StrPtr(MyVaraibleNotYetUsed)=0 http://www.excelfox.com/forum/showth...0463#post10463
    https://www.mrexcel.com/forum/excel-...tr#post2845398
    Last edited by DocAElstein; 02-17-2018 at 03:43 PM.
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  3. #3
    Senior Member DocAElstein's Avatar
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    Pop Up User InputBox with range selection alternative with API User 32 dll Programs

    Pop Up User InputBox with range selection alternative with API User 32 dll Programs

    The major 2 differences between the InputBox Function and the InputBox Method were seen to be that
    Rem1_a) The InputBox Method has the ability to make a Worksheet range selection whilst the Pop up box is active
    _b) The InputBox Method is flaky, aka Bug features
    _b)(i) Microsoft “Help” doesn’t work
    Rem2_b)(ii) the positional arguments don’t work in Excel 2007+
    Some attempt will be made to explain some Windows API User 32 dll Programs background ideas to make a simple Pop Up to come close to realising a Pop Up User InputBox with range selection.

    Part a) Worksheet range selection whilst the Pop up box is active, ( and _b)(i) Microsoft “Help” )

    Manipulating “Windows”.
    It would appear the word “Windows” is a name for a programming idea which might result in something we “see” as what we conceive as Windows. Manipulating of the actual “Windows” seems the key to pseudo “making my own” InputBox with range selection.
    Doing this in any language is a task for a computer genius, and in Visual Basic the documentation is very sparse. But “API User 32 dll Programs” would appear to make this possible. I can only attempt to get a working solution with a very light-minded fecile understanding.
    It would appear that direct linked libraries (dll) are available to run as and when required, hence the wording of direct link: They are used as an efficient means to organise Microsoft’s software generally allowing different Applications to share smaller programs which are shipped as standard with the Microsoft Windows Operating system. They are however also available to programmers , programming the applications.

    API , “API Calls
    The things discussed in the last section gets bundled up in an imprecise intimidating term API, for Application Programming interface. They are usually contained in a Folder with a name similar to User 32.
    Another seemingly intimidating phrase is “API call”. You may hear the term “I am using API calls”. It just means usually that you are using those things and related “Windows” concept
    Here’s a “API Calls” “thing” that I am getting familiar with using for now.
    Function thing __ SetWindowsHooksExample AkiAs SetWindowsHookExA
    This is one of the Library programs that can be used. I have been told by some professionals that in actual fact these Library programs are organised in a similar way to the Libraries that one can pseudo Import by “checking a reference” in the list of available to VBA code libraries. However by some subtlety that they are not sure about they cannot be used in a code in the way of through declaring ( Dim ing ) them and then after assigning a variable using that variable to “get at” the various Methods / Functions inside them.
    In place of the normal declaring ( Dim ing ) that would be within a routine, in the case of the Library programs being used here, you must do a sort of initial globial type Declaration. For this thing that I am intending to use, it looks like
    Code:
    Private Declare Function SetWindowsHookExample Lib "user32" Alias "SetWindowsHookExA" (ByVal Hooktype As Long, ByVal lokprocedureAddress As Long, Optional ByVal hmod As Long, Optional ByVal dwThreadId As Long) As Long
    Declareing Declare Type Functions
    You don’t always need the AliAs bit in these things. ( It just means _ this Lib "user32" _ Ali As ¬_ that _ (that is the Microsoft name , this is any name that I choose to use) ). Occasionally something can only be done to the AliAs where numbers and variable used to refer to things are concerned. It is subtle general point in computing that you might get problems when a number is used to refer to something that might take or give a number at some point. But you might need to do that, so having an intermediate word is a workaround for that so that the number is set to a word which is then related to a word that might be being referred to or returning a number.
    Function = Word
    Word = 873248
    So the Function can be referred to by a number indirectly, --- occasionally this may not be possible directly, --- Function =837547 might error for subtle computer reasons.

    It seems to do no harm to use an AliAs when you don’t need it and it helps to make a code prettier.
    ( Per PM request, Just as a comparison, I did no AliAs for one of the other things that I am using, so you can easily work out the syntax difference ( Function GetCurrentThreadId Lib "kernel32" () As Long ) http://www.excelfox.com/forum/showth...0478#post10478 )
    Once Declared you can think of them to a first approximation as a function written in a code module in the Folder on your computer with the name something like “User32” or “User32dll” or similar. You then use them to a very crude approximation as you would any conventional function that you may have made and which is typically in a VBA code module, like pseudo
    _ x = SetWindowsHookExample( 3 , y , _..__… etc )
    For use in a normal code you can use Private or Pubic. As in convectional VBA Functions Pubic will not confine the use of the function to the macro module in which it is in.
    For a class code module, such as a worksheet code module ( To get there, right click the worksheet's tab and select View Code ), these Declare type functions must be Private

    Owned “Windows”, and/ or z order.
    It is well above my knowledge to explain all concepts here, and as noted some things will have to be read as “on the tin” or in other words its faecile value.
    A Pop up is apparently always the one on top of to be seen ( “above on the screen “z axis” “ , - as a approximation the z axis is in the direction looking at it ) of the Window to which they belong and they always “belong”” to a parent window… well maybe something is not quite clear there…
    It is not always clear what “z option” does what, and even professionals sometimes seem to choose it from trial and error .
    But anyway these are two things that will need to be taken into the equation… or rather the “API calls” that I do..

    Hooking a “Window” to Handle it ..Computer Bollox terminology.
    I have needed to get some terms undefined correctly. Words like Handle and Hook are computer terms similar to the word Bollox in normal language and can be used alone or in conjunction with other words to have some meaning possibly in the context in which they are used but cannot have any precise meaning. Defining them as some computer bollox to do with handling and identifying Windows is a useful way to understand these terms.
    Some handle bollox will need to be taken into the equation… or rather the “API calls” that I do..
    Some published literature even supports my somewhat naive and critical resume, saying the words can mean a number of things. In our case the handle can be thought a number identifying a Window. A Hook can be thought of as hook or trip trap placed in some run or chain of events cause shuddering or jerking off of a procedure. This is related too the idea os Sub Classing of a widow discussed below as a possible solution to the second _b)(ii) the positional arguments

    MsgBox Pop up.
    At the time of writing this I have not figured out or found any InputBox API . I have found and got working some Message Box API’s . So for now I will look at Message Boxes Pop Ups in API calls

    Handleing of the MsgBox Pop up
    The code in the following post attempts to put some clarity, as far as I am able, on what the handle of the MsgBox, or rather API User32 Windows dll MessageBoxA Function might be about.
    I am able to find A “handle to a Window” that makes the API User32 Windows dll MessageBoxA appear to work as the Standard “non modal” VBA MsgBox.
    In all other cases of either a successfully found handle number ( to which it belongs is not clear to me ) or an unsuccessful found handle number ( hWnd is then 0 as returned from FindWind___ ), I appear to have a “non modal” Pop up box, in which case I have the possibility to make a spreadsheet selection with the Pop Up, popped up
    Some further reading has suggested that the unsuccessful found handle number returns a specific type of Long Null and contradictorily to some other literature suggests that this pop up must not have a owner window. There may be some more subtle points to it, but for now the use of the special symbol for a Long Null _ &H0 _ would suggest that the major part of the solution can be reduced to a simplified code lines such as in '2e) This will do then
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  4. #4
    Senior Member DocAElstein's Avatar
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    From last post…………..
    Handleing of the MsgBox Pop up
    The below attempts to put some clarity, as far as I am able, on what the handle of the MsgBox, or rather API User32 Windows dll MessageBoxA Function might be about.
    I am able to find A “handle to a Window” that makes the API User32 Windows dll MessageBoxA appear to work as the Standard “non modal” VBA MsgBox.
    In all other cases of either a successfully found handle number ( to which it belongs is not clear to me ) or an unsuccessful found handle number ( hWnd is then 0 as returned from FindWind___ ), I appear to have a “non modal” Pop up box, in which case I have the possibility to make a spreadsheet selection with the Pop Up, popped up
    Some further reading has suggested that the unsuccessful found handle number returns a specific type of Long Null and contradictorily to some other literature suggests that this pop up must not have a owner window. There may be some more subtle points to it, but for now the use of the special symbol for a Long Null _ &H0 _ would suggest that the major part of the solution can be reduced to a simplified code lines such as in '2e) This will do then
    Code:
    Option Explicit
    '
    Private Declare Function APIssinUserDLL_MsgBox Lib "user32" Alias "MessageBoxA" (Optional ByVal hWnd As Long, Optional ByVal Prompt As String, Optional ByVal Title As String, Optional ByVal buttons As Long) As Long '
    Private Declare Function FindWndNumber Lib "user32" Alias "FindWindowA" (Optional ByVal lpClassName As String, Optional ByVal lpWindowName As String) As Long
    Private Declare Function FindWindowEx Lib "user32" Alias "FindWindowExA" (ByVal hWnd1 As Long, ByVal hWnd2 As Long, ByVal lpsz1 As String, ByVal lpsz2 As String) As Long
    '
    Sub TestWndBreaks()    '    http://www.eileenslounge.com/viewtopic.php?f=18&t=28885#p223583
    Dim Response As Long
    Rem 1 ' Standard VBA Message Box
     Let Response = MsgBox(Prompt:="Q_- Where am I, the MsgBox? " & vbCrLf & "A_- locked Middle in Excel spreadsheet") '
    Rem 2 ' Message Box API User32 dll
     Let Response = APIssinUserDLL_MsgBox(Prompt:="Q_- Where am I, the MessageBoxA?" & vbCrLf & " A_- Middle in Active Window") '
    ' 2b) Get a number for hWnd to "lock" the Message box to a window
    ' Locked nowhere?
    Dim WndNumber As Long
     Let WndNumber = FindWndNumber(lpClassName:=vbNullString, lpWindowName:=vbNullString): Debug.Print WndNumber ' -- must be vbNullString not ""  ??
     Let Response = APIssinUserDLL_MsgBox(hWnd:=WndNumber, Prompt:="Q_- Where am I, the MessageBoxA?" & vbCrLf & " A_- Middle in Active Window, hwnd = " & WndNumber & "", Title:="""Non Modal"" Pop Up", buttons:=vbOKOnly) '
    
    ' 2c) working like the Standard VBA Message Box ??        https://www.techrepublic.com/blog/10-things/10-plus-of-my-favorite-windows-api-functions-to-use-in-office-applications/
    Dim hWndParent As Long
     Let hWndParent = FindWndNumber(lpClassName:="XLMAIN", lpWindowName:=vbNullString): Debug.Print hWndParent '
     Let Response = APIssinUserDLL_MsgBox(hWnd:=hWndParent, Prompt:="Q_- Where am I, the MessageBoxA?" & vbCrLf & " A_- locked Middle in Excel spreadsheet, hwnd = " & hWndParent & "", Title:="""Working like"" Microsoft Excel", buttons:=vbOKOnly) '
    ' 2d) Not sure whats gooing on
     Let hWndParent = FindWndNumber(lpClassName:="XLMAIN", lpWindowName:=ThisWorkbook.Name): Debug.Print hWndParent '
     Let Response = APIssinUserDLL_MsgBox(hWnd:=hWndParent, Prompt:="Q_- Where am I, the MessageBoxA?" & vbCrLf & " A_- locked Middle in Active Window??, hwnd = " & hWndParent & "", Title:="""Working like"" Non Modal ??", buttons:=vbOKOnly) '
     Let hWndParent = FindWndNumber(lpClassName:=vbNullString, lpWindowName:=ThisWorkbook.Name): Debug.Print hWndParent '
     Let Response = APIssinUserDLL_MsgBox(hWnd:=hWndParent, Prompt:="Q_- Where am I, the MessageBoxA?" & vbCrLf & " A_- locked Middle in Active Window??, hwnd = " & hWndParent & "", Title:="""Working like"" Non Modal ??", buttons:=vbOKOnly) '
    Dim hWndDskTop As Long
     Let hWndDskTop = FindWindowEx(hWndParent, 0&, "XLDESK", vbNullString): Debug.Print hWndDskTop '  https://msdn.microsoft.com/de-de/library/windows/desktop/ms633500(v=vs.85).aspx
     Let Response = APIssinUserDLL_MsgBox(hWnd:=hWndDskTop, Prompt:="Q_- Where am I, the MessageBoxA?" & vbCrLf & " A_- locked Middle in Active Window??, hwnd = " & hWndDskTop & "", Title:="""Working like"" Non Modal ??", buttons:=vbOKOnly) '
     Let hWndDskTop = FindWindowEx(hWndParent, 0&, "XLDESK", ThisWorkbook.Name): Debug.Print hWndDskTop
     Let Response = APIssinUserDLL_MsgBox(hWnd:=hWndDskTop, Prompt:="Q_- Where am I, the MessageBoxA?" & vbCrLf & " A_- locked Middle in Active Window??, hwnd = " & hWndDskTop & "", Title:="""Working like"" Non Modal ??", buttons:=vbOKOnly) '
    '2e) This will do then
     APIssinUserDLL_MsgBox hWnd:=&H0, Prompt:="This will do", Title:="""Working like"" Non Modal" '
    End Sub

    Using a variation of that can be used to write a short set of codes to allow the user to make a selection which can be shown as an address in the Pop Up which is the current collection, and which can be updated by making a new selection.
    In this code although the Message box itself is not returning a range object, the final range returned a t the end of the routine, Rsel , is based on the user selection. In addition the user on selecting “No” the Pop Up will re Pop up with the current selection displayed

    The end effect is something along the lines of a Pop Up User InputBox with range selection alternativ to the Method _.....
    Application.InputBox( Prompt:= , Title:= , Default:= , Left:= , Top:= , HelpFile:= , HelpContextID:= , Type:=8 )
    _.......with API User 32 dll Programs.
    Code:
    Option Explicit
    Private Declare Function APIssinUserDLL_MsgBox Lib "user32" Alias "MessageBoxA" (Optional ByVal hWnd As Long, Optional ByVal Prompt As String, Optional ByVal Title As String, Optional ByVal Buts As Long) As Long  '                                                                               ' MessageBoxA   http://www.tek-tips.com/faqs.cfm?fid=4699
    '
    Public Sub PopUpInputBoxWithRngSelAPIUser32dll()
    Noughty: 'PopUpInputBoxWithRngSelAPIUser32dll
    Dim Rpnce As Long, Rsel As Range: Set Rsel = Selection
    Dim Valyou As Variant: Let Valyou = Rsel.Value: If IsArray(Valyou) Then Valyou = Valyou(1, 1) 'For display Value of Top Left of Selection
     Let Rpnce = APIssinUserDLL_MsgBox(hWnd:=&H0, Prompt:="Yes,  or No to ReCheck, Cancel for help ", Title:="Selection Check: Address is " & Rsel.Address & "  Value is """ & Valyou & """", Buts:=vbYesNoCancel) ' ' Pseudo Non Modal MsgBox
        If Rpnce = 2 Then Application.Help HelpFile:=ThisWorkbook.Path & "\AnyFileName.chm", HelpContextID:=2 '              -----    download this file:  https://app.box.com/s/bx2pkvtemsppscz60rd6f430wm89c6fj This is a “.chm Microsoft Help file” It has the name _ AnyFileName.chm ---  Put in same folder as this Workbook  ---   Check out possible workarounds  --- http://www.excelfox.com/forum/showthread.php/2146-%E0%A4%AC%E0%A5%8D%E0%A4%B2%E0%A5%89%E0%A4%97-%E0%A4%95%E0%A5%8B%E0%A4%B6%E0%A4%BF%E0%A4%B6-%E0%A4%95%E0%A4%B0-%E0%A4%B0%E0%A4%B9%E0%A4%BE-%E0%A4%B9%E0%A5%88-%D8%A8%D9%84%D8%A7%DA%AF%D8%B2-%DA%A9%DB%8C-%DA%A9*Trying-Blogs?p=10467#post10467   ---  xpu shopuld get this  HelpGetUpBollox.JPG https://imgur.com/KdKOYWr
        If Rpnce = 7 Then GoTo Noughty ' Option to update the displayed Address and Value in Top Left cell of that range
     Set Rsel = Selection
    End Sub
    So the code simply takes the current spreadsheet selection as the required range. The address of this is also displayed as the Pop up caption.
    An option is included for a help file, ( I have checked and found that this works in excel 2003, 2007 and 2010 for a valid .chm file)
    An Option is also included to repeat the process. ( This allows a new selection to be displayed in the caption)
    The end effect is something along the lines of a Pop Up User InputBox with range selection alternative to the Method_..
    Application.InputBox( Prompt:= , Title:= , Default:= , Left:= , Top:= , HelpFile:= , HelpContextID:= , Type:=8 )
    _....... with API User 32 dll Programs.



    Further reading shows that an even more “fundamental” API Function is the MessageBoxTimeoutA. It can be used similarly, and indeed might be an even better option as it used by all other Message Box Functions. Therefore it might be a good option as it is more likely to be maintained in the future ( https://www.excelforum.com/developme...ml#post4822413 )




    The next posts tackle the Window positioning ( and size ) issue, Rem2_b)(ii) the positional arguments

    _._______________________________


    _._______________________________
    Last edited by DocAElstein; 02-08-2018 at 12:36 AM.
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  5. #5
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    Pop Up Window Positioning with API WindowsHook “User32” dll User Inpfuts Plop up stuff

    Part _Rem2_b)(ii) the positional arguments

    Although, the important feature of the spreadsheet selection possibility whilst the Pop Up is up has been realised, ( and also another issue, the Microsoft “Help” appears to work ) , the position and size is somehow in someway coming to a default value, there is no position or size option
    I am guessing that possibly it is not sized as such and that there are predetermined rules for an owned “Window”. There size is possibly predetermined from some pre determined “Window” that does not generally have the resize option , although positioning is somehow possible..

    The feature of controlling the size was an option in both the InputBox Method and the InputBox Function. In the case of the InputBox Method it appeared to broken from Excel 2007+

    I am not particularly interested in sizing and positioning after the event as I want a fairly fundamental Pop up for simple user input.

    It turns out that this requires some very complicated processes.
    It requires a full understanding of “Window”s. I can only attempt a very short very light-minded fecile overview. That will be discussed in the next posts: in Brief:

    Sub Classing / Redefining a “Window
    As is generally the case with “Window” Functions, A window belongs to a class. The Dynamic Linked Libraries concept allow the small programs in the with windows shipped typically in the User32 Folder programs to be called up / used at runtime, rather than a fixed set of instructions copied or and/ or used as such at some point. This allows for a modification of the class, known as Sub classing.
    This means that it is possible to modify / add to the “Window” Function and so pseudo create a customised ddl. It does not necessarily mean that a “Window” Function or a used User32 Folder program is directly Sub classes , but it just happens to be in our case as we are intending to mess about with the MessageBoxA ( or MessageBoxTimeoutA )

    Trigger Events Codes in Windows programs
    If you are familiar with Event triggered codes in VBA then the way to do this you can consider as similar idea:
    You can arrange that a used “Window” Function is modified as it is used.
    Similar in the way that a Worksheet_change code is triggered as something happens, you must arrange that a VBA Function is triggered when a Windows “event” occurs. At this point the concept gets a bit vague and I doubt many people really understand anymore how it really works. A good name for the VBA Function might be Function WinSubWinCls_JerkBackOffHooKterd.
    This VBA Function will itself be a pseudo “Window” Function and “hung” or hooked on a chain of events. Because of the dynamic / volatile nature of the stuff, things will have a habit of going on forever if they not “unhooked” such that a procedure will have to be designed to unhook itself. This will mean that generally this event triggered type code will only work once. A simple solution to make the solution work in a code for any number of message boxes would be use a simple routine which does two things, like pseudo

    Sub()
    ' A) Hook the pseudo Windows Sub Class Function WinSubWinCls_JerkBackOffHooKterd
    ' B) Call the MessageBoxA

    End
    ***The actual form of this will be close to these. It will be explained a bit more in detail later..
    Code:
    Sub HookAPIssinUserDLL_MsgBoxThenDropIt()
    ' a) HOOK Hook the pseudo Windows Sub Class Function WinSubWinCls_JerkBackOffHooKerd
     Let hHookTrapCrapNumber = SetWindowsHooksExample(5, AddressOf WinSubWinCls_JerkBackOffHooKterd, 0, GetCurrentThreadId)   ' (5-pull before flush,  somehow arranges that the function gets called  ,
    ' b) Call the MessageBoxA
     APIssinUserDLL_MsgBox(hWnd:=&H0, Prompt:="Yes,  or No to ReCheck, Cancel for help ", Title:="Selection Check: Address is " & Rsel.Address & "  Value is """ & Valyou & """", Buts:=vbYesNoCancel) ' ' Pseudo Non Modal Message Box
    End Sub
    Or
    Code:
    Sub HookAPIssinUserDLL_MsgBoxThenDropIt()
    ' a) HOOK Hook the pseudo Windows Sub Class Function WinSubWinCls_JerkBackOffHooKerd
    Dim BookMarkClassTeachMeWind As Long: Let BookMarkClassTeachMeWind = 5
     Let hHookTrapCrapNumber = SetWindowsHooksExample(BookMarkClassTeachMeWind, AddressOf HoldYaBackCalledYaBackClapTrap, 0, GetCurrentThreadId)   ' (5-pull before flush,  somehow arranges that the function gets called  ,
    ' b) Call the MessageBoxA
     APIssinUserDLL_MsgBox &H0, "Select Range", "MutsNuts AkaApi working ApplicationPromptToRangeInputBox", vbOKOnly ' Pseudo Non Modal
    End Sub
    ' B) Call the MessageBoxA
    This is simply our
    Code:
     
    __ APIssinUserDLL_MsgBox(hWnd:=&H0, Prompt:="Yes, or No to ReCheck, Cancel for help ", Title:="Selection Check: " & RngSel.Address, Buts:=vbYesNoCancel) ' Pseudo Non Modal MsgBox

    We need now to find the solutions to two things, I will try to give them a identifying “handle”
    HOOK _ ' A) Hook the pseudo Windows Sub Class Function WinSubWinCls_JerkBackOffHooKterd
    and then
    PROC _ we need the ( VBA in this case ) Function/ Sub Procedure in that we will be hanging, / dangling on, a chain of events / effectively making a Windows Sub Class. I am calling this:
    Function WinSubWinCls_JerkBackOffHooKterd.


    Sub Classing Windows aka in English: One way to mess about and modify the underlying Windows processes within a VBA code to get extra and novel solutions

    The following I will repeat a few times as it is a seemingly complicated way of doing stuff, and a bit off a *** “chicken and egg” thing to try and explain. It is very difficult to start anywhere, as you usually need to go back and forth constantly when explaining the underlying concepts. This is reflected in the very complicated interrelated processes and interactions going on in a final solution
    I will do my best to explain it in some sort of logical order. In parallel to the last two issues we have

    HOOK_ Setting a hook
    The Hook bollox word in this situation can be thought of as
    _(i) lots of hooks on a lot of different things / events that might happen. Alternatively a cyber robot keeping his beady eyes on lot of different things / events that might happen

    PROC _(ii) Some process / procedure / Function or similar that would be done on if any of the hooks are aroused. This (ii) may sometimes be referred to in literature as the hook procedure





    Refs:
    Microsoft Windows Features : types, states, size, and position : https://msdn.microsoft.com/en-us/lib...(v=vs.85).aspx

    User 32 API VBA Function list :
    Dan Appleman “Visual Basic Programmer’s Guide to the Win32 API”
    https://www.excelforum.com/excel-pro...rary-list.html


    Getting some Messsaga Box API Call’s working:
    http://www.eileenslounge.com/viewtopic.php?f=18&t=28885
    https://www.excelforum.com/excel-pro...dll-stuff.html

    Microsoft help (argument options): http://www.excelfox.com/forum/showth...0467#post10467



    Last edited by DocAElstein; 02-08-2018 at 12:38 AM.
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  6. #6
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    Pop Up Window Positioning with API WindowsHook “User32” dll User Inpfuts Plop up stuff

    Sub Classing Windows aka in English: One way to mess about and modify the underlying Windows processes within a VBA code to get extra and novel solutions


    “First Part HOOKSetting a hook
    The Hook bollox word in this situation can be thought of as
    _(i) lots of hooks on a lot of different things / events that might happen. Alternatively a cyber robot keeping his beady eyes on lot of different things / events that might happen
    There is an API program available for this is
    Code:
    Private Declare Function SetWindowsHookExample Lib "user32" Alias "SetWindowsHookExA" (ByVal Hooktype As Long, ByVal lokprocedureAddress As Long, Optional ByVal hmod As Long, Optional ByVal dwThreadId As Long) As Long  '  https://msdn.microsoft.com/en-us/library/windows/desktop/ms644990(v=vs.85).aspx
    Setting a Windows Hook
    The way this particular API Function, SetWindowsHookExA , works must have been deliberately designed to confuse in my opinion. I say this in particular because of the returned Long number is probably better considered as one of the functions arguments to be passed in some hidden process or procedure or instructions written on a bookmark or written on the class defining notes of , many bookmarks
    Very approximately and simply put: This code line _..
    SetWindowsHookExample(5, AddressOf HoldYaBackCalledYaBackClapTrap, 0, GetCurrentThreadId)
    _.. is “responsible” or “organises” to a large extent how and when the Function ( PROC hook procedure )which is discussed in the next post is called
    This code line might give the impression that there are 5 arguments type parameters to it.
    SetWindowsHookExample(5, AddressOf HoldYaBackCalledYaBackClapTrap, 0, GetCurrentThreadId)
    To see pseudo all the arguments you must consider that code line in the full used form
    hHookTrapCrapNumber = SetWindowsHookExample(5, AddressOf HoldYaBackCalledYaBackClapTrap, 0, GetCurrentThreadId)
    Pseudo we have, or rather Declareation makes more sense to me
    Code:
    Declare Function SetWindowsHooksExample Lib "user32" Alias "SetWindowsHookExA" (ByVal hHookTrapCrapNumber As Long, ByVal Hooktype As Long, ByVal lokprocedureAddress As Long, Optional ByVal hmod As Long, Optional ByVal dwThreadId As Long) As Long
    , in other words to look in a code like this:
    SetWindowsHooksExample(hHookTrapCrapNumber , 5, AddressOf HoldYaBackCalledYaBackClapTrap, 0, GetCurrentThreadId)
    It probably should have been. But never mind. But because of this daft way of putting the hHookTrapCrapNumber as the Function’s return, I must have a global variable for my hHookTrapCrapNumber so that I can get later at it in the hook procedure Function WinSubWinCls_JerkBackOffHooKterd

    Here an attempt to explain those arguments in English:
    (… my HoldYaBackCalledYaBackClapTrap or WinSubWinCls_JerkBackOffHooKterd is my hook Procedure .. just to remind )

    hHookTrapCrapNumber : This has the computer bollox word hook in it, so no one quite knows how to define it.. it can be thought of as a number of a Window in this case. But not in classic “seen Window”. In this case it is more of a number to identify a bookmark or class of , many bookmarks. Alternatively it is the name of our cyber Robot who could be called a Microsoft Windows program. He may or may not be residing in the User 32 Folder.

    5 : lets call this a Type of a hook a Handled or set trap point , ( or in English think of it as defining/ making a book mark type to be put in a book / books, that is / are likely to be going to be read at some later point in time_ 5 is the one that is defined or set to be fired by most stuff to do with window manipulations, as well as some other more advanced stuff that goes on. Alternatively this could be selecting the class of bookmark for those that will be placed in a few places by the API Function SetWindowsHookExA
    The number 5 is what we want. But we have mentioned that for subtle computer reasons it is generally a good idea to have and use a variable holding this number rather than direct number. It is also helpful in our particular case as we will see that another option defining number sent to out hook procedure could be 5 , and we test for that later. So just to avoid confusion I use a variable _ BookMarkClassTeachMeWind = 5

    AddressOf : This is called an Operator. An Operator is a computer word which in normal English means “some Bollox or other”. This stores in some secret place a number used to identify where to find the WinSubWinCls_JerkBackOffHooKterd
    So you had better have a WinSubWinCls_JerkBackOffHooKterd or you will get a compile error when running a code with the AddressOf WinSubWinCls_JerkBackOffHooKterd inside the (arguments, , , ) section of the use of the dll / User32 Function

    0 : Think of this as one of two radio buttons. The other one is the second argument , AddressOf WinSubWinCls_JerkBackOffHooKterd . The arguments are a bit similar. It was probably just done in two rather than one to confuse and intimidate me and my kind. So it is set to 0 as the other one is more like how and where my “hook” Procedure Bollox is

    GetCurrentThreadId : The Thread is what is going on, I expect that means in this case my VBA. My computer might do something else with or without me knowing. Most things going on will have a Thread number. When used in my code, Function GetCurrentThreadId will return an identifying number referring to the Excel instance that that code line is in.
    _.____

    Where are we?
    At this point, that is to say on completion of this code line, we can think of many Bookmarks having been placed. Think of an idea of a Windows form which we built a class Form for, and may have many open instances of it. It is difficult to find any better description of the situation. Whatever instances or “things” are hooked in place, they are waiting like a trap waiting to be tripped
    There could be a few things that might trigger them off. The purpose of doing all this is to trigger it off when our Message Box Pops up. There is no guarantee that other things going on as a result of out message box coming up may not also trigger one or more of the things. In fact, experiments by me have shown that typically 4 times a bookmark “hook” is triggered before the event that I actually want does the triggering.
    We need to try and arrange that we react appropriately to the required trigger.
    Some selection is possible and this will be a applied in the PROC hook procedure.
    In addition the possibility of a reacting to a false trigger in a program generally is minimised by putting the MessageBoxA call immediately after the call if the API SetWindowsHookExA function, as is the case in our Sub Procedure, Sub HookAPIssinUserDLL_MsgBoxThenDropIt().
    Code:
    Sub HookAPIssinUserDLL_MsgBoxThenDropIt()
    ' a) HOOK Hook the pseudo Windows Sub Class Function WinSubWinCls_JerkBackOffHooKerd
    Dim BookMarkClassTeachMeWind As Long: Let BookMarkClassTeachMeWind = 5
     Let hHookTrapCrapNumber = SetWindowsHooksExample(BookMarkClassTeachMeWind, AddressOf WinSubWinCls_JerkBackOffHooKterd , 0, GetCurrentThreadId) ' (5-pull before flush, somehow arranges that the function gets called ,
    ' b) Call the MessageBoxA
     APIssinUserDLL_MsgBox &H0, "Select Range", "MutsNuts AkaApi working ApplicationPromptToRangeInputBox", vbOKOnly ' Pseudo Non Modal
    End Sub
    So at this point in the discussions we are ready to consider and write our PROC hook procedure such that it will do what we want it to do after this code line is done
    _ MsgBox &H0, "Select Range", "MutsNuts AkaApi working ApplicationPromptToRangeInputBox", vbOKOnly ' Pseudo Non Modal

    So at this point in our descriptions we have got as far as having and possibly understanding a VBA Sub Procedure, Sub HookAPIssinUserDLL_MsgBoxThenDropIt().

    The significance of this is that in a code we will be able to
    _ Call HookAPIssinUserDLL_MsgBoxThenDropIt()
    This will have the effect of doing the necessary to arrange that then the_..
    _ MsgBox &H0, "Select Range", "MutsNuts AkaApi working ApplicationPromptToRangeInputBox", vbOKOnly ' Pseudo Non Modal
    _..riggers off the PROC hook procedure, which I am going to call
    Function HoldYaBackCalledYaBackClapTrap(!!!argumentssended !!! )
    Or rather some triggered happening takes place and somewhere towards the end of this happening my HoldYaBackCalledYaBackClapTrap(!!!argumentssended !!! ) is passed / sended some arguments and set off running

    “Triggered happening” of………
    Bookmark Procedure or
    Hidden Microsoft triggered code or
    What is trigger set to do / !!!arguments send.. , , !!! or
    Microsoft CBTProc callback function ( https://msdn.microsoft.com/en-us/lib...(v=vs.85).aspx )

    This Procedure should not be confused with my, still to be written, Function HoldYaBackCalledYaBackClapTrap(!!!argumentssended, , !!! ……) or maybe in a way of thinking it is. I am not too sure.
    In any case some happening has taken place and the referenced article is related to this Happening. This particular happening rather than any other is done by virtue of us selecting the option of 5 when setting the hook ( BookMarkClassTeachMeWind = 5 --- SetWindowsHooksExample(BookMarkClassTeachMeWind, , __)
    or
    SetWindowsHooksExample( 5 , , __)
    )

    The important information from the Microsoft article is the information regarding three parameters that I have indicated by !!!arguments send..!!!
    Somehow what the CBTProc callback function does is to “hold” these arguments for our Function HoldYaBackCalledYaBackClapTrap(!!!argumentssended, , !!! …… .

    So it is going to be important to write a Function in that three parameter argument signature line form. It seems as though that article describes some “skeleton” structure that I must adhere to in the Function design.
    It is important also to use a Function rather than a Sub routine: I do not think that I need to concern myself with this returned value. But I need to make my structure support this. I think. ( ..it crashes my Excel if I do a Sub routine ! )


    Summary of so far..
    This post summarised the main and pseudo Calling codes. At least it does in terms of the API bollox part of it.
    I say pseudo Calling because the main purpose of the codes is to “Call” my “ “Hook” Procedure “ Function, the Function to be set up in the next post as the Function HoldYaBackCalledYaBackClapTrap “Hook” Procedure
    But the main strange unusual characteristic of the code concepts is that there is no conventional Call code line

    The whole point of what is difficult to understand is that the codes have done the stuff necessary so that when the last main bit of the code is done, ( APIssinUserDLL_MsgBox ___ ) the event that then occurs will trigger / fire the Function HoldYaBackCalledYaBackClapTrap.

    With hindsight is not difficult to understand and say in plain English:
    If _…
    _..you just had the last main code bit of this sort of form:_..
    APIssinUserDLL_MsgBox &H0, "Select Range", "MutsNuts AkaApi working ApplicationPromptToRangeInputBox", vbOKOnly
    _... then a message box pops up. That is all there is to it.
    _.. But, … because of all the hooking bollox, when that Message box starts to come up, or when the chain of events waggles in anticipation, then that triggers/ fires the Function HoldYaBackCalledYaBackClapTrap
    Last edited by DocAElstein; 02-06-2018 at 10:09 PM.
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    Senior Member DocAElstein's Avatar
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    Sub Classing Windows aka in English: One way to mess about and modify the underlying Windows processes within a VBA code to get extra and novel solutions

    “Second Part PROCmy hook procedure

    My Function HoldYaBackCalledYaBackClapTrap

    ( CBTProc callback secret god knows where function ( https://msdn.microsoft.com/en-us/lib...(v=vs.85).aspx ) )


    Summary how did we get here:
    It is difficult to separate the discussions into the main code and the Function which is the main Theme of this Post. Probably with hindsight an intermediate post is needed to talk about some hidden secret coding which links the two.. ( CBTProc callback secret god knows where claptrap ) but anyway….
    Lets say that at this point in time that the code discussed in the last post has been run to the point that the reasonably normal VBA code line _..
    APIssinUserDLL_MsgBox &H0, "Select Range", "MutsNuts AkaApi working ApplicationPromptToRangeInputBox", vbOKOnly
    _.. has just been passed / is in the process of being carried out.
    ( I admit that this code line is actually also an API thingy, but for the purposes of this discussion it can be taken as working very similarly to the normal conventional VBA MsgBox Function – most of its arguments are doing the same )
    But before that, a line has previously been done as was discussed in detail in the last post:
    hHookTrapCrapNumber = SetWindowsHooksExample(5, AddressOf HoldYaBackCalledYaBackClapTrap, 0, GetCurrentThreadId)

    The effect of that is / was a follows:
    In some predetermined set of instructions or planned chain of events, a “hook” or “marker” or “clap trap” or “page marker” or “trip trap” was made. This was given an identifying number which was returned by that “API Function” and it was chosen to be placed in the main code in a globial variable hHookTrapCrapNumber. I do not think that this number identifies the “page in the book” where the bookmarker is. I think it just is listed somewhere in a list of any active / set up book marks. I guess there might be / could be a few, so you need to distinguish them. It was also disgust that possibly the number refers to set instances of a Bookmark class: there may be a few , but they are all effectively connected / activated by the number hHookTrapCrapNumber existing in some register.
    The bookmarker has a particular type, ( 5 ). The type will be responsible for catching the Message box code line from the last post, ( APIssinUserDLL_MsgBox &H0, "Select Range", "MutsNuts AkaApi working ApplicationPromptToRangeInputBox", vbOKOnly ). That fires my hook procedure Function. Other things may also fire my hook procedure Function. They may or may not be themselves also related to the Popping up of my message Box.

    What can easily confuse is that we do not need that number in hHookTrapCrapNumber initially. The number refers to the book mark.
    When we have finished this Function code we will need it to take the Bookhook marker out.
    There is an API Function too do this:
    __UnHookWindowsHookCodEx hHookTrapCrapNumber
    That code line will be used in my function, so we need to have had to put it at the start of the code module in a global variable:
    Private hHookTrapCrapNumber As Long
    The effect of using the option 5 has been to effectively to have another program which we never see “made available “ ( it might be another dll User 32 one or some other one hidden god knows where on the computer). I think a good guess and explanation might be to say that this hidden code “sits” on the bookmark waiting to be run when the chain of events or book that the bookmark is in waggles/ shakes it into life. The hidden coding when it runs is somehow giving the information such that my written hook procedure Function must be written in such a way to recognise. part of what the hidden code does is to pseudo to write on the bookhook mark a number…. which…can be thought of as a number of a Window in this case… possibly… but I am not really convinced… maybe that is the number of a Window being opened.. There probably is another couple of numbers written on the bookmark:
    _The Address Of this “rat-trap-back-W_nd-rap-hold-back-call-back-holdhook roll back to my bollox” function HoldYaBackCalledYaBackClapTrap
    ( Address Of my hook procedure Function HoldYaBackCalledYaBackClapTrap )
    and
    _ the “address” of the CBTProc callback secret god knows where function
    No wonder no one knows what’s going on. I doubt I would if I was not a bit autistic. We never get to see the those number or numbers . There might be a API function code to get those, - but that will probably have to wait 10 years to find when I answer the API List thread. The fact that the function does get called is the proof I guess that the correct one was got by the
    SetWindowsHooksExample(5, AddressOf HoldYaBackCalledYaBackClapTrap, 0, GetCurrentThreadId)….
    In the last post it was suggested that the Microsoft CBTProc callback Function might be some sort of skeleton signature line place holding thing for the argumentstosend to my hook procedure Function HoldYaBackCalledYaBackClapTrap. Effectively it defines how my signature line must be written such that the data made available ( 3 Long numbers ) are in the predefined order so that I know which is which.

    One could say, as a chap Don I know did, “ The function you set up as the hook callback has to match the CBTProc specification (parameter names are not important, but order, type and number are)
    I think in the meantime I understand.
    _... The secretly held info of Long number Address Of HoldYaBackCalledYaBackClapTrap was already known. It served its purpose to “get us to” the signature line of the function
    Code:
    Private Function HoldYaBackCalledYaBackClapTrap(ByVal lMsg As Long, ByVal wParam As Long, ByVal lParam As Long) As Long   '                                   ByVal CopyNumberFroNxtLvl As Long) As Long This bit wont work… The function you set up as the hook callback has to match the CBTProc specification (parameter names are not important, but order, type and number are)……
    “So Here” we are. We are Here:
    Function HoldYaBackCalledYaBackClapTrap

    I suspect now, at this moment in time, at the trigger / trip / stumble over the bookhookmark , we are “sent” to the function with information pertaining to the _...
    ___( _trip type detected ,
    _________ a number…. which…can be thought of as a number of a Window in this case ,
    ________________ a number god knows what but it ain’t important anyway. )
    _.. or maybe the “thing” cursor progression robot walking through the transverse multi plane simultaneous dimensioned computer memory is stumbling never ending as long as the bookhook mark is there, which it is as we have not taken it out yet, … but we will catch this one with our_........
    __If lMsg = 5 Then _...........
    ___( _ The system is about to activate a window. ,
    _________ a number…. which… in this case .. my MessageBoxA window ,
    ________________ maybe some info about a cat and /or mouse )

    The cursor progression robot had stumbled about 5 times or so before he tripped up on the one I wanted. My logs showed that. ( https://www.excelforum.com/developme...ml#post4829796 https://www.excelforum.com/developme...ml#post4831335 https://www.excelforum.com/developme...ml#post4831382 )
    I couldn’t get any satisfaction in understanding the logic of Functions of this nature which I found on searches. ( And those posts got deleted in some Witch hunt to ban me from that Forum anyway…. )

    I decided to start again on the Function from scratch.
    If the syntaxly correct arguments are passed, then the Function “starts” as any other.
    If I have any normal syntax errors then that does not seem to be picked up when I write the code.
    But if there are any then running the main code will cause Excel to crash once the function “starts”
    I played around a bit.
    The idea of the Function in this application is to position and size the window of a Message box.
    But starting from scratch. I just do this-..
    Code:
    Private Function HoldRapeAHookPro(ByVal lMsg As Long, ByVal wParam As Long, ByVal lParam As Long) As Long    
    End Function ' HoldRapeAHookPro
    _.. and I get no error. The main code completes normally with a Message box. Further investigation suggests that the Function is done many times, but it proved difficult to measure how many- an attempt with variations of_...
    Let GlobinalCntChopsLog = GlobinalCntChopsLog + 1 : Debug.Print GlobinalCntChopsLog
    _... a very high number was suggested but the Immediate window seemed to go on printing more and more lines after completion of the code when anything was clicked on. Simply removing the Debug.Print and looking at the final value of GlobinalCntChopsLog yields a much smaller number. Possibly some strange mismatch in execution times and states. The Immediate window appears to effect the code.


    Various Published codes doing something similar API things, _...

    http://www.vbforums.com/showthread.p...3-but-not-2007
    https://www.techrepublic.com/blog/10...-applications/
    http://www.eileenslounge.com/viewtop...=28885#p223629
    https://stackoverflow.com/questions/...excel-vba-why/
    http://www.mrexcel.com/forum/excel-q...ox-method.html
    http://www.excely.com/excel-vba/defi...ssagebox.shtml
    https://www.excelforum.com/excel-pro...dll-stuff.html

    _... seemed to go into a strange recursion which seemed to have a stack limit of 30. Once again the details and Logs of those at the previous links have been deleted.

    I started to start from scratch having gained a small level of understanding in the process of preparing this and the referenced deleted Threads.

    So I start again in the next Post.
    Last edited by DocAElstein; 02-08-2018 at 01:39 AM.
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    Final Function --- Function HoldYaBackCalledYaBackClapTrap( , , ) As Long ' --- PROC Hook Procedure

    Some conclusions from experiments on various codes types.

    Two main ‘_- observations

    ‘_- Stopping
    the function.
    I have done a number of experiments, as briefly explained at the end of the last post.
    Some important observations:
    It seems that my “hook procedure” function will potentially be triggered indefinitely. Possibly this is reasonable. It is further reasonable that the simple API Function call already discussed is needed to stop the function being triggered once my function has done its main purpose:
    Here an Ali -As-‘d version of this code line:
    UnHookWindowsHookCodEx hHookTrapCrapNumber
    The corresponding Declare line for that would be
    Private Declare Function UnHookWindowsHookCodEx Lib "user32" Alias "UnhookWindowsHookEx" (ByVal hHookTrapCrapNumber As Long) As Long


    ‘_- Doing the Pop up window sizing and positioning ( API User32 dll program SetWindowPos)
    Originally the issue for which my Hook procedure Function was required was the _ Part _b)(ii) the positional arguments _ .
    The API Function which appears to have been used in Visual Basic and VBA codes in similar issues to this is the
    SetWindowPos ( https://msdn.microsoft.com/en-us/lib...(v=vs.85).aspx ). This looks potentially very useful as it can change_..
    _..all three positional co ordinates, horizontal (x), vertical (y), and the “z axis” “Z order”. ( The last z coordinate can be thought of to a first approximation as the axis looking onto the screen, the “top z” then being the window “seen” above all others ).
    _.. also, as a bonus, it can also be used to change the seen Window width and height.
    The syntax in a code line use of this function is pseudo like
    _ SetWindowPosition _ WindowIdentifyinghandle, zorder , x , y , width , height , zFurtherInfo
    The two z__ options are not too intuitive, and even some computer Professionals make an inspired guess for them based on a partial understanding of the documentation. The rest of the argument parameters are as “written on the can” _ x , y , width , height ( “says the tin”.. https://www.excelforum.com/excel-pro...ml#post4831198 )

    From the experiments with use of this I was concerned about a seemingly unnecessary recursion process that seemed to set in. I also observed this in published Functions which were intended to do something similar.

    My final Hook procedure Function differs therefore slightly in any I have seen so far in that it a globinal variable, GlobinalCntChopsLog, is used to keep track of the times that my Hook procedure Function is run. The constant jerking back and forth of the function, repeating, presumably by the “Bookmarks” reacting seemingly indefinitely is actually needed. As noted in the previous post we will do some selection to hopefully pick out the correct “event”, that is to say the appropriate event in the chain of events in which the “popping up” of our message box is included. But I am not sure if the extra recursion runs of copies of my function are necessary or desired. - The required action appears to be done on the first use of the SetWindowPosition . However a usage seems itself to trigger the function. I am assuming this is a recursion process so that another copy of my function is made and that is run. It does not, however, go into stack overflow. Consistently at the 29th recursion, it would appear that the recursion stops and each copy function is ended one after the other. ( A guess is that the stack might be limited somehow to 30 ). For my codes this resulted in a total of 6+29=35 runs: My function jerked itself off 5 times until a condition I set to hopefully find the event I was wanting to be caught was satisfied. So on the 6th run the SetWindowPosition code line was done. Experimenting on that showed that at this point all was done and OK as regards the positioning. A further 29 copy runs of the function appeared to be done, suggesting that the SetWindowPosition code line was responsible somehow for this. ( Example of this test code with output Log is shown here: http://www.excelfox.com/forum/showth...0478#post10478 )

    Logic of my final Hook procedure Function
    At the outset of the function, my gobinial variable is increased by 1. This intended to keep count of the copy number of the Function being run. It will therefore be reduced by 1 at the end of the function. Therefore, should a recursion run take place, ( that is to say a copy of the function is made and run ) , then the gobinial variable will hold the value of 2. A test for that will be made. This is tested for and If a value of 2 is found Then the “hook is released” and the function ended.
    When my function is no in a recursion run, that is to say GlobinalCntChopsLog is not equal to 2 then the code proceeds as follows:
    The value of the first argument lMsg at the incoming signature line _..
    _ Function HoldYaBackCalledYaBackClapTrapRuc(ByVal lMsg As Long, ByVal wParam As Long, ByVal lParam As Long ).
    _.. is investigated
    This is done for the following reason:
    As explained in the lost few posts, one result of the “hook” being “hanged” is that when one of our “bookmarks” is “triggered”, then some coding ( possibly the Microsoft CBTProc callback function ( https://msdn.microsoft.com/en-us/lib...(v=vs.85).aspx ) ) is responsible for passing information into the three arguments of my Hook procedure Function. ( Possibly this coding itself is responsible for all the other “placing of bookmarks” etc.. previously discussed ).
    The first argument defines the type of “event” that has done the triggering. ( Remember we mentioned previously that it is an unfortunate co incidence that the number of 5 is what we are looking for here.. This was also the number which we needed to stipulate in the setting of the hook code line, hHookTrapCrapNumber = SetWindowsHooksExample(5, AddressOf , ….. ). That had a different meaning so should not be confused with the current 5 under discussion. )
    The value of 5 specifies that the system is about to activate a window.

    So If lMsg = 5 Then the code line_..
    _ SetWindowPosition(wParam, 0, 10, 50, 400, 150, 40)
    _.. is carried out.
    _ wParam ________ is the passed windows identifying number for my Message box
    10, 50, 400, 150 ___ are the horizontal and vertical size and positions
    _ , 0 , _ , _ , _ , 40 __ The two numbers 0 and 40 are chosen after a bit of intuitive guessing based on the previous given Microsoft references. The end effect is to have the window seen as dominantly as wanted. They are likely to be based to some extent on experimenting in a particular requirement.
    ( As a function, the SetWindowPos is designed to return a value. In this usage I have not experienced problems using it as a Sub routine Call _..
    _ Call SetWindowPosition( , , , , , , )
    _.. but to be on the safe side I have used it as a Function returning its return in a Boolean variable, Booloks
    )
    _.__________________

    All the ground has been covered and explained as far as I am able to give finally a Pop Up User pseudo InputBox with range selection alternative with API User 32 dll Programs.
    The next post will give a Summarised working full codes solution.
    Last edited by DocAElstein; 02-07-2018 at 11:13 PM.
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    Pop Up User pseudo InputBox with range selection alternative with API User 32 dll Programs

    Pop Up User pseudo InputBox with range selection alternative with API User 32 dll Programs.
    This is a summary final working codes solution to allow a user to use a simple Pop up ( non UserForm ) to make an Excel range object selection.
    This solution allows you to make a spreadsheet selection whilst the Pop Up is up.
    The Standard stuff currently available
    The VBA Message Box and VBA Input Box Functions are Modal, in other words you cannot do anything to the spreadsheet when they are up.
    The Application Input Box Method should allow you to do this when you choose the last option as , Type:=8. It does allow you to do this, but a couple of things are broken:
    _ The ability to position the Pop up ( appears to be broken since Excel 2007 )
    _ The Microsoft help function does not appear to me to work in Excel 2003 2007 2010. I do not know if it ever worked for the Application Input Box Method
    My Solution
    This solution overcomes these problems, which is the main reason I did it, especially because of the first problem. It also has a few extra things that might be useful
    _ You can choose the size of the Pop up ( width , height )
    _ You can adjust the “z” things… I am not too clear on these options but in simple terms it means that you arrange how it appears in terms of the order of what windows you see, how and in which priority you see it, what windows are “under” or “above” it to see etc..
    _ A simple change of the ByRef to ByVal in the signature line of a Called routine ( Sub HangAHookToCatchAPIssinUserDLL_MsgBoxThenBringThat MsgBoxUp(By___ ) allows you to change the value of a range object to that of the selection, but the original range object will not change, that is to say its address remains as before the selection. That could give you an extra option in how you select and move around in a spreadsheet.

    All codes should be copied to the same code module.

    The first sections Rem 1 and Rem 2 makes the necessary API programme available and declares (Dim’s) a couple of related globial variables. This section will need to go at the top of a code module.
    Rem 1 is straight forward and makes available a pseudo Non Modal message box.
    Rem 2 is a bit more complicated and makes available a few API program things needed to mess about with Windows dimensions when they come up.


    Code:
    Option Explicit    '                                                                                                    “Window"s is a name for a programming idea which might result in something we “see” as what we conceive as Windows. Manipulating of the actual “Windows” seems the key to pseudo “making my own” InputBox with range selection.        Direct linked libraries (dll) are available to run as and when required, hence the wording of direct link: They are used as an efficient means to organise Microsoft’s software generally allowing different Applications to share smaller programs which are shipped as standard with the Microsoft Windows Operating system. They are however also available to programmers , programming the applications.  They are usually contained in Folder with name similar to User 32. "API calls”: just means usually that you are using those things and related “Windows” concept-all gets gets bundled up in imprecise intimidating term API, for Application Programming interface
    Rem 1 Pseudo Non Modal MsgBox,   MessageBoxA          API Standard Non Standard Stuff, More Fundamentally complicated    UnWRap it and.. "Pseudo Non Modal MsgBox"           ---  A valid handle, hWnd,  other than the Excel spreadsheet window (  Private Declare Function FindWndNumber Lib "user32" Alias "FindWindowA" (Optional ByVal lpClassName As String, Optional ByVal lpWindowName As String) As Long --- hWndParent = FindWndNumber(lpClassName:="XLMAIN", lpWindowName:=vbNullString)   ),  or even no ( Null ) hWnd results in a pseudo Non Modal MsgBox                                                                                http://www.excelfox.com/forum/showthread.php/2227-VBA-Input-Pop-up-Boxes-Application-InputBox-Method-versus-VBA-InputBox-Function?p=10476#post10470      http://www.tek-tips.com/faqs.cfm?fid=4699
    Private Declare Function APIssinUserDLL_MsgBox Lib "user32" Alias "MessageBoxA" (Optional ByVal hWnd As Long, Optional ByVal Prompt As String, Optional ByVal Title As String, Optional ByVal Buts As Long) As Long  '
    '_- ====  The above is all I need to do so that writing  APIssinUserDLL_MsgBox  in any code in this code module will do something very similar to the VBA  MsgBox.  The main difference is that when it is up, I can still scroll up and down in my Excel Spreadsheet and also select a range.
    Rem 2_b)(ii) == To set/change The positional arguments        "Sub Classing a "Window""       As is generally the case with “Window” Functions, A window belongs to a class. The Dynamic Linked Libraries concept allow the small programs in the with windows shipped typically in the User32 Folder programs to be called up / used at runtime, rather than a fixed set of instructions copied or and/ or used as such at some point. This allows for a modification of the class, known as Sub classing. This means that it is possible to modify / add to the “Window” Function and so pseudo create a customised ddl. It does not necessarily mean that a “Window” Function or a used User32 Folder program is directly Sub classes , but it just happens to be in our case as we are intending to mess about with the MessageBoxA ( or MessageBoxTimeoutA )  You can arrange that a used “Window” Function is modified as it is used.
    ' The next four line will tie something on my chain for when you pull it.                     Similar in the way that a Worksheet_change code is triggered as something happens, you must arrange that a VBA Function is triggered when a Windows “event” occurs. At this point the concept gets a bit vague and I doubt many people really understand anymore how it really works. A good name for the VBA Function might be Function WinSubWinCls_JerkBackOffHooKterd. This VBA Function will itself be a pseudo “Window” Function and “hung” or hooked on a chain of events. Because of the dynamic / volatile nature of the stuff, things will have a habit of going on forever if they not “unhooked” such that a procedure will have to be designed to unhook itself.
    Last edited by DocAElstein; 02-09-2018 at 03:26 AM.
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    Code:
    Rem 2_b)(ii) == To set/change The positional arguments        "Sub Classing a "Window""       As is generally the case with “Window” Functions, A window belongs to a class. The Dynamic Linked Libraries concept allow the small programs in the with windows shipped typically in the User32 Folder programs to be called up / used at runtime, rather than a fixed set of instructions copied or and/ or used as such at some point. This allows for a modification of the class, known as Sub classing. This means that it is possible to modify / add to the “Window” Function and so pseudo create a customised ddl. It does not necessarily mean that a “Window” Function or a used User32 Folder program is directly Sub classes , but it just happens to be in our case as we are intending to mess about with the MessageBoxA ( or MessageBoxTimeoutA )  You can arrange that a used “Window” Function is modified as it is used.
    ' The next four line will tie something on my chain for when you pull it.                     Similar in the way that a Worksheet_change code is triggered as something happens, you must arrange that a VBA Function is triggered when a Windows “event” occurs. At this point the concept gets a bit vague and I doubt many people really understand anymore how it really works. A good name for the VBA Function might be Function WinSubWinCls_JerkBackOffHooKterd. This VBA Function will itself be a pseudo “Window” Function and “hung” or hooked on a chain of events. Because of the dynamic / volatile nature of the stuff, things will have a habit of going on forever if they not “unhooked” such that a procedure will have to be designed to unhook itself.
    Private Declare Function SetWindowsHooksExample Lib "user32" Alias "SetWindowsHookExA" (ByVal Hooktype As Long, ByVal lokprocedureAddress As Long, Optional ByVal hmod As Long, Optional ByVal DaFredId As Long) As Long '   The effect of this will be: In some predetermined set of instructions or planned chain of events, a “hook” or “marker” or “clap trap” or “page marker” or “trip trap” was made. This was given an identifying number which was returned by that “API Function” and it was chosen to be placed in the main code in a globial variable hHookTrapCrapNumber. I do not think that this number identifies the “page in the book” where the bookmarker is. I think it just is listed somewhere in a list of any active / set up book marks. I guess there might be / could be a few, so you need to distinguish them.
    Private hHookTrapCrapNumber As Long ' "BookmarkClassNumber --- This makes pseudo  Declare Sub() SetWindowsHooksExample Lib "user32" AliAs "SetWindowsHookExA" (ByVal hHookTrapCrapNumber As Long, ByVal Hooktype As Long, ByVal MyloksPROCedureFukAddress As Long, Optional ByVal RadioButton2Out As Long, Optional ByVal duhFredId As Long) As Long     It was also disgust that possibly the number refers to set instances of a Bookmark class: there may be a few , but they are all effectively connected / activated by the number hHookTrapCrapNumber existing in some register. The bookmarker has a particular type, ( 5 ). The type will be responsible for catching the Message box code line to call the MessageBoxA, (like  APIssinUserDLL_MsgBox &H0, "Select Range", "working ApplicationPromptToRangeInputBox", vbYesNoCancel ). That fires my hook PROCedure Function, WinSubWinCls_JerkBackOffHooKterd. Other things may also fire my hook PROCedure Function. They may or may not be also related to the Popping up of my Box.
    '               Dim BookMarkClassTeachMeWind As Long: Let BookMarkClassTeachMeWind = 5 ' 5 is Hooktype that I will be using. Using a variable for two reasons: '1_- general point in computing that you might get problems when a number is used to refer to something that might take or give a number at some point. But you might need to do that, so having an intermediate word is a workaround for that so that the number is set to a word which is then related to a word that might be being referred to or returning a number. Function = Word --- Word = 873248   '2_- Just to avoid confusion Later as in this particular case later another option number happens to be 5
    Private Declare Function GetDaFredId Lib "kernel32" Alias "GetCurrentThreadId" () As Long '   The Thread is what is going on, I expect that means in this case my VBA. My computer might do something else with or without me knowing. Most things going on will have a Thread number. When used in my code, Function GetDaFredId will return an identifying number referring to the Excel instance that that code line is in.     It is actually needed in the setting of the Windows hook code line only ( that which is last argument in   SetWindowsHookEx(  ,   ,   , DaFredId As Long) ... set a hook, confined to the current thread (so it doesn't get triggered by other things going on) and give it the address of the function that you want to call in response to the hook being triggered. In this I will use 5 CBT hook which is triggered generally by Window messages (activating, creating, destroying, minimizing, maximizing, moving, or sizing a window)
    ' This below takes it off the chain. Or wipe the chain clean.  Or remove it from something.   Or cancel it. Or Kill it.   Or whatever.  In any case it needs the identifying number of the "hook",  then a simple code line as shown in comment below will do this "Killing"    Without doing this the thing seems to go on indefinitely (with or without any recursion. (A recursion is another issue which seems to happen as an additional issue - that occurs when the final API code below (over next line) does its job - that seems to fire  my Hook PROCedure function WinSubWinCls_JerkBackOffHooKterd
    Private Declare Function UnHookWindowsHookCodEx Lib "user32" Alias "UnhookWindowsHookEx" (ByVal hHookTrapCrapNumber As Long) As Long '               'Release the Hook           This is used in code in a simple code line like:-      Call UnHookWindowsHookCodEx(hHookTrapCrapNumber)
    '_-  === All of the above in section Rem 2 is required so that I am able to organise that when I use APIssinUserDLL_MsgBox another program (my windows hookProcedure program WinSubWinCls_JerkBackOffHooKterd) is triggered. (It has a habit of being triggered indefinitely so the API program Decared in the last line above will be used to stop that happening).
    '2(d)=== The Final API program below we need to actually do what we want.  (WindowIdentifyinghandle,    zorder         ,   x                ,       y            ,       width         ,     height          ,       zFurtherInfo  ) '_- Most is obvious, except the z stuff -      WindowIdentifyinghandle/wParam   is one the parameters passed in some secret process to my Function WinSubWinCls_JerkBackOffHooKterd(   , wParam ,   ) and will be the windows identifying number for my Message box that is popping up.  ( ,10 ,50 ,400 ,150 , ) These four numbers are the horizontal and vertical size and positions.   ( 0, , , , ,40 ) The two numbers 0 and 40 are chosen after a bit of intuitive guessing based on Microsoft references like https://msdn.microsoft.com/en-us/library/windows/desktop/ms633545(v=vs.85).aspx    The end effect is to have the window seen as dominantly as wanted. They are likely to be based to some extent on experimenting in a particular requirement.
    Private Declare Function SetWindowPosition Lib "user32" Alias "SetWindowPos" (ByVal hWnd As Long, ByVal zNumber As Long, ByVal CoedX As Long, ByVal CoedY As Long, ByVal xPiXel As Long, ByVal yPiYel As Long, ByVal wFlags As Long) As Long '    This API prog will be called in my hook PROCedure function.  So.. Rem 2a)-c) sets "Bookmark"/ series of "Bookmarks"/ Microsoft Windows cyber Robot monitering events (of "type 5", i.e. my Pop up coming up is one such. When such a event occurs my function is triggered by Windows software monitering Robot, he knows where/which my function WinSubWinCls_JerkBackOffHooKterd is from the  AddressOf  in a "hook setting code line" like  (5 ,AddressOf WinSubWinCls_JerkBackOffHooKterd , 0, ThreadID) The monitering Robot program thing passes somehow  (a number from a list of event types to tell me more precisely what event it noticed, wParam-identifying number of the Window doing that event, possibly some other mouse thing info thing am not bothered about)
    Dim Booloks As Boolean ' I use this in the code line  Booloks = SetWindowPosition(WindowIdentifyinghandle, zorder,x, y, width, height ,zFurtherInfo)   I don't seem to need this, but as a function, the SetWindowPos is designed to return a value. In this usage I have not experienced problems using it as a Sub routine Call like    Call SetWindowPosition( , , , , , , )    but to be on the safe side I have used it as a Function returning its return in a Boolean variable, Booloks
    Dim GlobinalCntChopsLog As Long ' I use this to keep track of the copy nimber of my Hook PROCedure function WinSubWinCls_JerkBackOffHooKterd, that is to say check for when that  = 2. If that is the case I do the "unhooking" and Exit the Function
    '  ========================
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