Subclassing...wheres my error?!

Alright, I've made a program that uses several hotkeys. To do this, I implemented subclassing. When I exit the program, I get an error...

I have the SetWindowLong() codes inside a form that is active the whole program, but the program starts with a Sub Main().

The referenced procedure is in a module, as advised. Code is as follows:

Code:

---

Public Function CheckMessage(ByVal hWnd As Long, ByVal uMsg As Long, ByVal wParam As Long, ByVal lParam As Long) As Long
    Select Case uMsg
        Case WM_HOTKEY
            HotKeyPress wParam
            CheckMessage = 1
            Exit Function
        Case Else
            CheckMessage = CallWindowProc(PrevProc, hWnd, uMsg, wParam, lParam)
    End Select
End Function

---

When I use the hotkey CTRL-SHIFT-F5 my program ends. As I unload the form I'm using in the module, the form initiates the code:

SetWindowLong frmOptions.hWnd, GWL_WNDPROC, PrevProc

And then the program ends.

Any ideas where the error might be coming from?

Thanks a bunch in advance,
-Steve

The debugging message I get in VC++ if I choose to debug is attached...

You need to unregister any hotkeys before the window that they are registered with terminates. Typically this is done in the WM_CLOSE message handler.

HTH,
Duncan

thanks a lot, ill try it out when i get home!

I was registering the same function keys as hotkeys, but with different key combinations. I had functions for one set of keys when CTRL only was down, and another set for when CRTL + SHIFT was pressed down. I got rid of this and the error dissapeared.

Seems sort of asinine to me :( :confused: