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NASM Forum => Using NASM => Topic started by: Marek Niewazne on August 27, 2009, 07:43:18 PM

Title: hWnd wParam uMsg under
Post by: Marek Niewazne on August 27, 2009, 07:43:18 PM

xor            rcx,rcx
   call         GetModuleHandleA
   mov            [hModule],eax
   push         0
   mov            r9,MainDialogBoxProcedure
   mov            r8,0
   mov            rdx,1
   mov            rcx,rax
   call         DialogBoxParamA
ExitProgram:
   mov             rcx,0
   call         ExitProcess
MainDialogBoxProcedure:
   push         rbp
   mov            rbp,rsp
   mov            rax,[rbp+??]            ;wParam
   cmp            rax,2                  ;WM_DESTROY
   jz            MainDialogExit
   cmp            rax,10h                  ;WM_CLOSE
   jz            MainDialogExit
   cmp            rax,110h               ;WM_INITDIALOG
   jz            MainDialogBoxInitDialog
   cmp            rax,111                  ;WM_COMMAND
   jz            MainDialogBoxCheckUserAction
   xor            rax,rax
   leave
   ret

whats the value for hWnd under windows xp 64 bit ?

Title: Re: hWnd wParam uMsg under
Post by: Marek Niewazne on August 27, 2009, 08:00:07 PM

oops sorry wasnt clear enought last time so i try again ... after i call DialogBoxParamA  windows return control to my previously defined dialog box procedure with some arguments located SOMWHERE on the stack like uMsg wParam hWnd and so on their location changed from win32 to win64 so now im not sure where are they located if anyone could clearm me out here would be greate thanks ;)