Win32 & MFC window handles again

[BM]

Hi Pete,
My piece of global code is using the HWND normally passed to WinProc; it uses it to perform a SetWindowLong for a structure.
When I pass the result of AfxGetMainWnd to the code it crashes, am I using the wrong routine to get the HWND?
The application is SDI.

Thanks

Barry

 

[palbano]

> My piece of global code is using

global code

That is likely your problem. I personally despise global code. That said, it is very likely your 'global' code is running before any of the window creation routines have run and therefore the HWND and CWnd's are invalid (un-initialized or zero memory).

Of course without seeing the neccassary code this is just a guess.

-pete