关于钩子函数和dll，高手请进（这是我第一次发贴）

Question

你必须得得到鼠标所在窗口的句柄，hwnd=WindowFormPoint(MousePoint);
然后用GetWindowsText(hwnd,buffer,maxcount)得到该窗口的标题,
buffer是保存标题的；
你能把你的关于dll文件发给我吗，要源码，不要已生成的dll啊，因为我也正在做一个进程通信的程序，我想研究研究，可以吗？
我的email：[email protected]

Answer 1

我的这个东西也没有什么神秘的，让大家看看吧
程序中有些调试用的语句，我就不改了
///////////firstdll.h
#ifdef __cplusplus
#define EXPORT extern "C" __declspec (dllexport)
#else
#define EXPORT __declspec (dllexport)
#endifEXPORT LRESULT WINAPI MouseProcA(int nCode,WPARAM wparam,LPARAM lparam);
EXPORT BOOL StartHook(HWND hwnd);
EXPORT BOOL StopHook();
#ifdef UNICODE
#define MouseProc MouseProcW
#else
#define MouseProc MouseProcA
#endif
//////////.cpp
#include <windows.h>
#include "firstdll.h"
#include <commctrl.h>#define WM_USER_SHOWNAME (WM_USER+100)
#pragma data_seg ("shared")
HWND hwndStatBar=NULL;     ////这个不一定是状态栏
HINSTANCE hInst=NULL;
HHOOK hHook=NULL;
HWND glhPrevTarWnd=NULL;
UINT aaa=0;
TCHAR szCaption[100]={'\0','\0','\0','\0','\0','\0','\0','\0','\0','\0',
 '\0','\0','\0','\0','\0','\0','\0','\0','\0','\0',
 '\0','\0','\0','\0','\0','\0','\0','\0','\0','\0',
 '\0','\0','\0','\0','\0','\0','\0','\0','\0','\0',
 '\0','\0','\0','\0','\0','\0','\0','\0','\0','\0',
 '\0','\0','\0','\0','\0','\0','\0','\0','\0','\0',
 '\0','\0','\0','\0','\0','\0','\0','\0','\0','\0',
 '\0','\0','\0','\0','\0','\0','\0','\0','\0','\0',
 '\0','\0','\0','\0','\0','\0','\0','\0','\0','\0',
 '\0','\0','\0','\0','\0','\0','\0','\0','\0','\0',
};
//const TCHAR *szCaption=szCaption2;
#pragma data_seg ()
#pragma comment(linker,"/SECTION:shared,RWS")int WINAPI DllMain (HINSTANCE hInstance, DWORD fdwReason, PVOID pvReserved)
{
hInst=hInstance;
    return TRUE ;
}
EXPORT BOOL StartHook(HWND hwnd)
{
if(hwnd==NULL)return false;
if((hHook=SetWindowsHookEx(WH_MOUSE,MouseProc,hInst,0))==NULL)
return false;
hwndStatBar=hwnd;
return true;
}
EXPORT BOOL StopHook()
{
if(hHook==NULL)return false;
if(UnhookWindowsHookEx(hHook))
{
hwndStatBar=NULL;
hHook=NULL;
HWND glhPrevTarWnd=NULL;
return true;
}
return false;
}
EXPORT LRESULT WINAPI MouseProcA(int nCode,WPARAM wparam,LPARAM lparam)
{
LPMOUSEHOOKSTRUCT pMouseHook=(MOUSEHOOKSTRUCT FAR *) lparam;
if(nCode>=0 && nCode==HC_ACTION)
{
HWND glhTargetWnd=pMouseHook->hwnd; 
HWND ParentWnd=glhTargetWnd; 
while (ParentWnd !=NULL)
{
glhTargetWnd=ParentWnd; 
ParentWnd=GetParent(glhTargetWnd);
}
if(glhTargetWnd!=glhPrevTarWnd)
{
TCHAR sztmp[100];
if(0!=GetWindowText(glhTargetWnd,sztmp,100))
{
memcpy(szCaption,sztmp,100);
HDC hdc=GetDC(HWND_DESKTOP);
TextOut(hdc,0,0,szCaption,lstrlen(szCaption));
if(aaa==(UINT)szCaption)
TextOut(hdc,0,30,"dengyu",6);
else
TextOut(hdc,0,30,"budeng",6);
ReleaseDC(HWND_DESKTOP,hdc);
// GLOBALHANDLE hGlobal;
// hGlobal=GlobalAlloc(GMEM_ZEROINIT|GMEM_MOVEABLE|GMEM_SHARE,100);
// BYTE* pGlobal=(BYTE*)GlobalLock(hGlobal);
// memcpy(pGlobal,szCaption,100);
// GlobalUnlock(hGlobal);
if(IsWindow(hwndStatBar))
SendMessage(hwndStatBar,WM_USER_SHOWNAME,(WPARAM)szCaption,0);
glhPrevTarWnd=glhTargetWnd;
// GlobalFree(hGlobal);
aaa=(UINT)szCaption;
}
}
}
return CallNextHookEx(hHook,nCode,wparam,lparam);
}