weird result using win32wx.inc

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sleepsleep

Joined: 05 Oct 2006
Posts: 12737
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sleepsleep 25 Nov 2011, 23:05

hi,
using the default TEMPLATE.ASM file (coming with fasm latest)
i tried the following and discover (maybe buffer overflow or etc)

i change the following for TEMPLATE.ASM

Code:

include 'win32w.inc'
to
include 'win32wx.inc'

then i add the following.
        cmp     [wmsg],WM_CREATE
        je      .wmcreate

  .wmcreate:
        invoke  MessageBox,0,'Yahoo',0
        jmp     .finish

now, u assemble it, it will runs and pop up a messagebox 'Yahoo'.

then u do the following.

u change the

Code:

_title TCHAR 'Win32 program template',0
to
_title TCHAR 'A',0

then the messagebox will not coming anymore.
am using the fasm IDE, F9 to assemble & run.

25 Nov 2011, 23:05

typedef

Joined: 25 Jul 2010
Posts: 2909
Location: 0x77760000

typedef 26 Nov 2011, 03:07

Wrong !

Code:

invoke  MessageBox,0,'Yahoo',0

Correct

Code:

invoke  MessageBox,0,'Yahoo',0,0

MessageBox API takes 4 arguments not 3

26 Nov 2011, 03:07

sleepsleep 26 Nov 2011, 05:54

oh, damn stupid mistake i made, lol.

26 Nov 2011, 05:54

LocoDelAssembly
Your code has a bug

Joined: 06 May 2005
Posts: 4624
Location: Argentina

LocoDelAssembly 26 Nov 2011, 15:07

Switch to 'win32wxp.inc' so you can detect errors like these.

26 Nov 2011, 15:07

sleepsleep 27 Nov 2011, 14:50

thanks LocoDelAssembly, will try it ! Smile

27 Nov 2011, 14:50

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