Win32 汇编例程问题?
例程源码:编译成功,发现一个问题就是 在关闭的时候,主进程没有结束。用W32Dasm反汇编检查了,好像没有问题。但实在想不出是哪个地方出了问题,好像是在call _WinMain之后没有返回调用 invoke ExitProcess,NULL导致,但_WinMain进程结束前都没有少ret 返回。请鱼油们帮忙想下是哪里出了问题
;************first window**************
;copyright by yang 20160821
;======================================
.386
.model flat,stdcall
option casemap:none
include windows.inc
include gdi32.inc
includelib gdi32.lib
include user32.inc
includelib user32.lib
include kernel32.inc
includelib kernel32.lib
.data?
hInstance dd ?
hWinMain dd ?
.const
szClassName db 'MyClass',0
szCaptionMain db 'MyWindow',0
szText db 'This is my first Window!',0
.code
;**************************************************
;窗口过程消息处理
;**************************************************
_ProcWinMain proc uses ebx edi esi,hWnd,uMsg,wParam,lParam
local @stPs:PAINTSTRUCT
local @stRect:RECT
local @hDc:HDC
mov eax,uMsg
.if eax == WM_PAINT
invoke BeginPaint,hWnd,addr @stPs
mov @hDc,eax
invoke GetClientRect,hWnd,addr @stRect
invoke DrawText, @hDc , addr szText,-1,\
addr @stRect,\
DT_SINGLELINE or DT_CENTER or DT_VCENTER
invoke EndPaint,hWnd,addr @stPs
.elseif eax ==WM_CLOSE
invoke DestroyWindow,hWinMain
invoke PostQuitMessage,NULL
.else
invoke DefWindowProc,hWnd,uMsg,wParam,lParam
ret
.endif
xor eax,eax
ret
_ProcWinMain endp
;*************************************************
;_WinMain proc
;*************************************************
_WinMain proc
local @stWndClass:WNDCLASSEX
local @stMsg:MSG
invoke GetModuleHandle,NULL
mov hInstance,eax
invoke RtlZeroMemory,addr @stWndClass,sizeof @stWndClass
;*************************************************
;注册窗口类
;*************************************************
invoke LoadCursor,0,IDC_ARROW
mov @stWndClass.hCursor,eax
push hInstance
pop @stWndClass.hInstance
mov @stWndClass.cbSize,sizeof WNDCLASSEX
mov @stWndClass.style,CS_HREDRAW or CS_VREDRAW
mov @stWndClass.hbrBackground,COLOR_WINDOW+1
mov @stWndClass.lpszClassName,offset szClassName
mov @stWndClass.lpfnWndProc,offset _ProcWinMain ;
invoke RegisterClassEx,addr @stWndClass
;****************************************************
;建立窗口,显示窗口
;****************************************************
invoke CreateWindowEx,WS_EX_CLIENTEDGE ,\
offset szClassName,offset szCaptionMain,\
WS_TILEDWINDOW,0,0,300,200,NULL,NULL,hInstance,NULL
mov hWinMain,eax
invoke ShowWindow,hWinMain,SW_SHOWNORMAL
invoke UpdateWindow,hWinMain
;*****************************************************
;消息循环
;*****************************************************
.while TRUE
invoke GetMessage,addr @stMsg,hWinMain,0,0
.break .if eax == WM_QUIT
invoke TranslateMessage,addr @stMsg
invoke DispatchMessage,addr @stMsg
.endw
ret
_WinMain endp
start:
call _WinMain
invoke ExitProcess,NULL
end start _ProcWinMain proc uses ebx edi esi,hWnd,uMsg,wParam,lParam
local @stPs:PAINTSTRUCT
local @stRect:RECT
local @hDc:HDC
mov eax,uMsg
.if eax == WM_PAINT
invoke BeginPaint,hWnd,addr @stPs
mov @hDc,eax
invoke GetClientRect,hWnd,addr @stRect
invoke DrawText, @hDc , addr szText,-1,\
addr @stRect,\
DT_SINGLELINE or DT_CENTER or DT_VCENTER
invoke EndPaint,hWnd,addr @stPs
.elseif eax ==WM_CLOSE
invoke PostQuitMessage,NULL
invoke DestroyWindow,hWinMain
invoke ExitProcess,NULL ;在这里加入,才可以完全退出程序
.else
invoke DefWindowProc,hWnd,uMsg,wParam,lParam
ret
.endif
xor eax,eax
ret
_ProcWinMain endp 找到原因
GetMessage:
Return value
Type: Type: BOOL
If the function retrieves a message other than WM_QUIT, the return value is nonzero.
If the function retrieves the WM_QUIT message, the return value is zero.
;*****************************************************
;消息循环
;*****************************************************
.while TRUE
invoke GetMessage,addr @stMsg,hWinMain,0,0
;.break .if eax == WM_QUIT
.break .if eax == 0
invoke TranslateMessage,addr @stMsg
invoke DispatchMessage,addr @stMsg
.endw
如果 加入判断 WM_CLOSE和WM_DESTROY 为什么消息循环不能退出??????
好像 PostQuitMessage 没有执行一样
_ProcWinMain proc uses ebx edi esi,hWnd,uMsg,wParam,lParam
local @stPs:PAINTSTRUCT
local @stRect:RECT
local @hDc:HDC
mov eax,uMsg
.if eax == WM_PAINT
invoke BeginPaint,hWnd,addr @stPs
mov @hDc,eax
invoke GetClientRect,hWnd,addr @stRect
invoke DrawText, @hDc , addr szText,-1,\
addr @stRect,\
DT_SINGLELINE or DT_CENTER or DT_VCENTER
invoke EndPaint,hWnd,addr @stPs
.elseif eax == WM_CLOSE
invoke MessageBox,hWinMain,offset szQuitText,offset \
szCaptionMain,MB_OKCANCEL
.if eax == IDOK
invoke DestroyWindow,hWinMain
ret
.endif
.elseif eax == WM_DESTROY
invoke PostQuitMessage,NULL
ret
.else
invoke DefWindowProc,hWnd,uMsg,wParam,lParam
ret
.endif
xor eax,eax
ret
_ProcWinMain endp 99101553@qq.com 发表于 2016-8-27 12:03
找到原因
GetMessage:
改了,,还是一样没有退出循环,{:5_94:}
这是怎么回事????
请帮忙!!!!!! ;*****************************************************
;消息循环
;*****************************************************
.while TRUE
; invoke GetMessage,addr @stMsg,hWinMain,0,0
;.break .if eax == WM_QUIT
invoke GetMessage,addr @stMsg,NULL,0,0
.break .if eax == 0
invoke TranslateMessage,addr @stMsg
invoke DispatchMessage,addr @stMsg
.endw
把NULL 改成 程 序 句柄hInstance程序运行报错!窗口句柄可以用但在DestroyWindow 之后,GetMessage 无法改得 窗口的消息,所以消息循环就不能退出!
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