Crash When Use SetWindowLongPtrA

[Gerailly]

When Hook The Window Class #32770 Through Form , It Does Work Fine But When SubClass This Window Inside CBTProc , System Crash And Hang Up , What s Wrong ? Because Of Not Define Handle Window MayBe Happens Crashing ? In Access Application When Open Form And Hook Window Class #32770 , Again Have Another #32770 ???

 

[welshgasman]

Seriously?

 

[Gerailly]

Yeah , I Do Not Know Where i am wrong ... Maybe Not Mention Excactly the Right Handle Window , Because So Many Window Have In Access App Also DeskTop Window

 

[xenou]

Some additional info here:
https://docs.microsoft.com/en-us/windows/win32/winmsg/about-window-classes

I can't really offer any specific advice - I use windows API programming very rarely so I don't have any experience with these issues.