Weird reaction on a popup menu *RESOLVED*

[Mega_Man]

I have text box which has has a popup menu associated with the right click of the mouse, however, the user is required to click twice in order for my menui to appear. The first click displays the Cut,Copy,Paste menu and then the next click shows my menu. I have stepped through the code and the event is firing.
any suggestions?

Mega.

[MartinLiss]

I believe the only way to turn off the built-in menu is through message hooking. Are you aware of message hooking and it's problems? If not, then one thing you need to know is that when message hooking is active, if you stop your running program by clicking the little "End" button on the IDE menu, VB crashes. To get around that annoying behavior I have a Conditional Compilation Argument called Testing that I turn on in development and off when I compile.

Public Declare Function SetWindowLong Lib "user32" Alias "SetWindowLongA" _
        (ByVal hwnd As Long, ByVal nIndex As Long, ByVal dwNewLong As Long) As Long
Public Const GWL_WNDPROC = -4
 
' In Form_Load do the following (you could use the For Each method of stepping through the controls)
    For intIndex = 0 To Controls.Count - 1
        #If Testing Then
            ' Don't hook
        #Else
            If TypeOf Controls(intIndex) Is TextBox Then
                ' Turn off the TextBox system right-click menu
                Call Hook(Controls(intIndex).hwnd)
            End If
        #End If
    Next
 
Private Sub Form_Unload(Cancel As Integer)
 
    Call UnHook
    
End Sub
 
Public Sub Hook(hwnd As Long)
 
    lngHWnd = hwnd
    lpPrevWndProc = SetWindowLong(lngHWnd, GWL_WNDPROC, AddressOf WindowProc)
    
End Sub
 
Public Sub UnHook()
 
    Dim lngReturnValue As Long
    
    lngReturnValue = SetWindowLong(lngHWnd, GWL_WNDPROC, lpPrevWndProc)
    
End Sub

[Mega_Man]

Martin,
Thanks a lot. Much appreciated.

Mega.

[Mega_Man]

Martin,
Are there a couple of API calls missing here?
I cannot seem to get it to work. Missing reference to WindowProc etc..

Mega.

[MartinLiss]

Sorry...

Public Declare Function CallWindowProc Lib "user32" Alias "CallWindowProcA" _
(ByVal lpPrevWndFunc As Long, ByVal hwnd As Long, ByVal Msg As Long, _
ByVal wParam As Long, ByVal lParam As Long) As Long


Also I believe that the Hook and UnHook subs need to be in a code module.

[MartinLiss]

and

Public Const WM_RBUTTONUP = &H205
Public lpPrevWndProc As Long
 
Function WindowProc(ByVal hwnd As Long, ByVal uMsg As Long, ByVal wParam As Long, _
                    ByVal lParam As Long) As Long
    
    Select Case uMsg
        Case WM_RBUTTONUP
        'Do nothing
        'Or popup you own menu
    Case Else
        WindowProc = CallWindowProc(lpPrevWndProc, hwnd, _
        uMsg, wParam, lParam)
    End Select
    
End Function

[Mega_Man]

Ok,
Thanks again.

Mega.

[ac11965]

hi there

how do you actually use the windowproc procedure?
can you please send me an example?

thanks