sendmessage and combobox's

[Borje Hagsten]

Not sure I understand. You want to send messages from a DLL written in
PB to a program written in VB? Pass the hWnd property from VB to the
DLL and then use standard API in DLL, like:

'--------------------------------------------------------------
' PB CODE - simple DLL
' (save as My.bas and compile to DLL in same folder as VB prog)
'--------------------------------------------------------------
#COMPILE DLL "MY.DLL"
#INCLUDE "WIN32API.INC"
SUB SetVBCBSel(BYVAL hWnd AS LONG, BYVAL item AS LONG) EXPORT
  IF hWnd THEN
     SendMessage hWnd, %CB_SETCURSEL, item, 0
     'SendMessage GetParent(hWnd), %WM_COMMAND, MAKLNG(GetDlgCtrlID(hWnd), %CBN_DBLCLK), hWnd     'for Combo1_DblClick event
     SendMessage GetParent(hWnd), %WM_COMMAND, MAKLNG(GetDlgCtrlID(hWnd), %CBN_SELCHANGE), hWnd  'for Combo1_Click() event
     'Note - notifications goes to parent (form), then VB passes on to internal event handler.
  END IF
END SUB
 
'--------------------------------------------------------------
' VB CODE - One form, one ComboBox with style 2 (dropdown list)
' and one button. Compile and then run EXE to test.
'--------------------------------------------------------------
Private Declare Sub SetVBCBSel Lib "My.Dll" Alias "SETVBCBSEL" (ByVal hWnd As Long, ByVal item As Long)
 
Private Sub Combo1_DblClick()
  MsgBox "This is VB talking - Combo1_DblClick was triggered from DLL!!"
End Sub

Private Sub Combo1_Click()
  MsgBox "This is VB talking - Combo1_Click was triggered from DLL!!"
End Sub
 
Private Sub Command1_Click()
  SetVBCBSel Combo1.hWnd, 2 'select third item via DLL..
End Sub
 
Private Sub Form_Load()
    Dim I As Long
    For I = 1 To 10
        Combo1.AddItem "Item number " + CStr(I)
    Next I
End Sub

------------------
Okay, first only did DblClick, then saw you wanted Click event, so
added way to trigger that one too..



[This message has been edited by Borje Hagsten (edited September 26, 2001).]

[Thomas Tierney]

Hi all,
I am currently finishing up a QA defect tracking system and automated
test manager for the company I currently work for..
since this will automate setup up of the software and GUI Testing
I have a need to make various inputs via sendmessage..
I have most of the requirements finished with the exception of
combobox selections.. these are the dropdown listbox's provided
by Visual Basic(ComboBox control set to dropdown listbox)...
I have tried several methods to generate a click event to the combo
box control and nothing seems to work, any IDEA?


thanks


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