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Hello,
I am working on a simple program that pops up a message box that displays OK and NO.. i was just wondering what to look for to tell what option the user clicked on. Im sure i could figure it out if i knew what to look for... any help is appreciated Thanks

Dug

Posted on 2002-04-09 03:41:16 by zealott

MessageBox return values

Afternoon, zealott.

test eax for IDOK or IDNO.

Cheers,
Scronty

Posted on 2002-04-09 05:20:32 by Scronty

Hmmm

Im new to this flavor of assembly (used to 16bit assembly) but anyway would you give an example please... also handy would be in what method this would go in.. my guess would be right after the message box is created, but then again im not that sure.. thanks agian for the help

Posted on 2002-04-09 23:45:13 by zealott

MessageBox return values

[size=9]

.586

.MODEL FLAT, STDCALL

OPTION CASEMAP:NONE



INCLUDE \masm32\include\windows.inc

INCLUDE \masm32\include\kernel32.inc

INCLUDELIB \masm32\lib\kernel32.lib

INCLUDE \masm32\include\user32.inc

INCLUDELIB \masm32\lib\user32.lib



.CODE



    Yes     DB "You clicked Yes.", 0

    No      DB "You clicked No.", 0



Start:



    invoke  MessageBox, 0, 0, 0, MB_YESNO

    cmp     eax, IDYES

    jne     @@UserClickedNo

    

        invoke  MessageBox, 0, OFFSET Yes, 0, 0

        jmp     @@ExitProgram

    

    @@UserClickedNo:

    

        invoke  MessageBox, 0, OFFSET No, 0, 0

    

    @@ExitProgram:

    

    invoke  ExitProcess, 0



END Start[/size]

Posted on 2002-04-09 23:52:03 by stryker

sweet...

Thanks.. very extremely helpful
hehe

Posted on 2002-04-10 00:02:15 by zealott

MessageBox return values

Just remember: after any win32 api call the return value will always be in EAX. To make sure you know what to check on those returned values on every win32 api calls, there are online win32 reference or get the platform SDK.

Posted on 2002-04-10 00:17:08 by stryker

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