ASM Community

Dear all
    first, please see the codes:
-----------------------------------
.while TRUE
    invoke GetMessage, addr @stMsg, NULL, NULL, NULL.
    .break  .if eax == 0
    invoke TranslateMessage, addr @stMsg
    invoke DispatchMessage, addr @stMsg
.endw
........
invoke  ExitProcess, NULL
------------------------------------
    to use these codes, my program can run well and quit normally.
    when i replace the second argument from NULL to hWnd, my program can run normally, but cannot quit.

    My "WinProc" callback procedure code is:
-------------------------------------------
    .........
    .if          eax == WM_PAINT
          ..........
    .elseif    eax == WM_CLOSE
            invoke  DestroyWindow, .....
            invoke  PostQuitMessage, ........
            xor  eax, eax
            ret
    .else
      ............
-------------------------------------------
Now, I want to know, why My program cannot quit?

BTW
if i add a option(eax == -1) to break the loop, My program can quit
---------------
.while TRUE
    invoke GetMessage, addr @stMsg, NULL or hWnd, NULL, NULL.
    .break  .if eax == 0 || eax == -1
    invoke TranslateMessage, addr @stMsg
    invoke DispatchMessage, addr @stMsg
.endw
invoke  ExitProcess, NULL
---------------

thanks and best regards.
billbear

GetMessage returns 0 for WM_QUIT and non-zero for other messages, *BUT* returns -1 if an error occurred, so
check out the error using GetLastError.

Edit: Try removing "DestroyWindow" from the WM_CLOSE processing, since GetLastError returns "invalid hwnd"

Dear Fodder and sinsi,

    thank you very much!

best regards.
billbear