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Hello Word In a MessagBox - Help returning value

Hello Word In a MessagBox - Help returning value

Hello Word In a MessagBox - Help returning value

Ok, I finally wrote my first successful ASM program, which is below.

My question is this - how do I find out what button ( yes/no/cancel ) the user pressed? Where is this information stored? According to the Win32API:

If the function succeeds, the return value is one of the following menu-item values returned by the dialog box:

Value           Meaning
IDABORT            Abort button was selected.
IDCANCEL    Cancel button was selected.
IDIGNORE    Ignore button was selected.
IDNO            No button was selected.
IDOK            OK button was selected.
IDRETRY            Retry button was selected.
IDYES            Yes button was selected.

If a message box has a Cancel button, the function returns the IDCANCEL value if either the ESC key is pressed or the Cancel button is selected. If the message box has no Cancel button, pressing ESC has no effect.

How do I have another message box come up and tell me what I chose?

Thanks in advance. As you can see, I am really new at this - yesterday to be exact.


Here is my code so far:

.model flat, stdcall
option casemap:none

    include \masm32\include\windows.inc
    include \masm32\include\user32.inc
    include \masm32\include\kernel32.inc
    include \masm32\include\gdi32.inc

    includelib \masm32\lib\user32.lib
    includelib \masm32\lib\kernel32.lib
    includelib \masm32\lib\gdi32.lib

MsgCaption      db "My Window Caption",0
MsgBoxText      db "My First Program!",0

    invoke MessageBox, NULL,addr MsgBoxText, addr MsgCaption, MB_YESNOCANCEL

    invoke ExitProcess,NULL
end start

RE: Hello Word In a MessagBox - Help returning value

Hi Trope,

The return value is in EAX. So the code is:

.If (eax == IDABORT)
    ; Do something

Hope it helps

-- AirCon --

RE: Hello Word In a MessagBox - Help returning value

Perfect, worked great. Thanks

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