Win32汇编学习笔记（三）

最新推荐文章于 2025-01-12 21:59:42 发布

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最新推荐文章于 2025-01-12 21:59:42 发布

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本文介绍了一个使用汇编语言实现的简单示例，演示了如何从一个程序向另一个窗口程序发送消息。通过创建发送者和接收者两个程序，展示如何利用Windows API函数如FindWindow、SendMessage等来查找目标窗口并发送文本消息。

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;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

;Sender.asm

;从一个程序向另一个窗口程序发送消息之发送程序

;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

.386

.modelflat,stdcall

optioncasemap:none

;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

;Include文件定义

;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

includewindows.inc

includeuser32.inc

includelibuser32.lib

includekernel32.inc

includelibkernel32.lib

;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

;数据段

;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

.data

hWnddd?

szBufferdb256dup(?)

.const

szCaptiondb'SendMessage',0

szStartdb'PressOKtostartSendMessage,param:%08x!',0

szReturndb'SendMessagereturned!',0

szDestClassdb'MyClass',0;目标窗口的窗口类

szTextdb'Textsendtootherwindows',0

szNotFounddb'ReceiveMessageWindownotfound!',0

;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

;代码段

;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

.code

start:

invokeFindWindow,addrszDestClass,NULL

.ifeax

movhWnd,eax;找到目标窗口则发送消息

invokewsprintf,addrszBuffer,addrszStart,addrszText

invokeMessageBox,NULL,offsetszBuffer,offsetszCaption,MB_OK

invokeSendMessage,hWnd,WM_SETTEXT,0,addrszText

invokeMessageBox,NULL,offsetszReturn,offsetszCaption,MB_OK

.else

invokeMessageBox,NULL,offsetszNotFound,offsetszCaption,MB_OK

.endif

invokeExitProcess,NULL

;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

endstart

;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

消息发送者代码：

;Receiver.asm

;从一个程序向另一个窗口程序发送消息之消息接收程序

;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

.386

.modelflat,stdcall

optioncasemap:none

;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

;Include文件定义

;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

includewindows.inc

includegdi32.inc

includelibgdi32.lib

includeuser32.inc

includelibuser32.lib

includekernel32.inc

includelibkernel32.lib

;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

;数据段

;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

.data?

hInstancedd?

hWinMaindd?

szBufferdb512dup(?)

.const

szClassNamedb'MyClass',0

szCaptionMaindb'ReceiveMessage',0

szReceivedb'ReceiveWM_SETTEXTmessage',0dh,0ah

db'param:%08x',0dh,0ah

db'text:"%s"',0dh,0ah,0

;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

;代码段

;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

.code

;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

;窗口过程

;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

_ProcWinMainprocusesebxediesi,hWnd,uMsg,wParam,lParam

moveax,uMsg

;****************************************************************

.ifeax==WM_CLOSE

invokeDestroyWindow,hWinMain

invokePostQuitMessage,NULL

;****************************************************************

;收到WM_SETTEXT消息则将消息字符串和字符串地址显示出来

;****************************************************************

.elseifeax==WM_SETTEXT

invokewsprintf,addrszBuffer,addrszReceive,/

lParam,lParam

invokeMessageBox,hWnd,offsetszBuffer,addrszCaptionMain,MB_OK

;****************************************************************

.else

invokeDefWindowProc,hWnd,uMsg,wParam,lParam

ret

.endif

;****************************************************************

xoreax,eax

ret

_ProcWinMainendp

;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

_WinMainproc

local@stWndClass:WNDCLASSEX

local@stMsg:MSG

invokeGetModuleHandle,NULL

movhInstance,eax

invokeRtlZeroMemory,addr@stWndClass,sizeof@stWndClass

;****************************************************************

;注册窗口类

;****************************************************************

invokeLoadCursor,0,IDC_ARROW

mov@stWndClass.hCursor,eax

pushhInstance

pop@stWndClass.hInstance

mov@stWndClass.cbSize,sizeofWNDCLASSEX

mov@stWndClass.style,CS_HREDRAWorCS_VREDRAW

mov@stWndClass.lpfnWndProc,offset_ProcWinMain

mov@stWndClass.hbrBackground,COLOR_WINDOW+1

mov@stWndClass.lpszClassName,offsetszClassName

invokeRegisterClassEx,addr@stWndClass

;****************************************************************

;建立并显示窗口

;****************************************************************

invokeCreateWindowEx,WS_EX_CLIENTEDGE,offsetszClassName,offsetszCaptionMain,/

WS_OVERLAPPEDWINDOW,/

50,50,200,150,/

NULL,NULL,hInstance,NULL

movhWinMain,eax

invokeShowWindow,hWinMain,SW_SHOWNORMAL

invokeUpdateWindow,hWinMain

;****************************************************************

;消息循环

;****************************************************************

.whileTRUE

invokeGetMessage,addr@stMsg,NULL,0,0

.break.ifeax==0

invokeTranslateMessage,addr@stMsg

invokeDispatchMessage,addr@stMsg

.endw

ret

_WinMainendp

;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

start:

call_WinMain

invokeExitProcess,NULL

;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

endstart

<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />

MakeFile文件：

LINK_FLAG=/subsystem:windows

ML_FLAG=/c/coff

all:Sender.exeReceiver.exe

Sender.exe:Sender.obj

Link$(LINK_FLAG)Sender.obj

Receiver.exe:Receiver.obj

Link$(LINK_FLAG)Receiver.obj

.asm.obj:

ml$(ML_FLAG)$<

clean:

del*.obj