一步一步实验，慢慢才扁译成功。过程是痛苦的。
读懂以下代码需要一定的基础。学一点基本概念后，再来看才行。
我是菜鸟一名，请高手指点。
我有不少的wxWidgets笔记，整理后会发放。只是现在忙着学API HOOK,才没时间。
wxDevC++环境，用C开发的全局勾子.
extern "C" 是用c++开发才加上的。因为我用C写，不需要加上。
Code: Select all
dll.h
#ifndef _DLL_H_
#define _DLL_H_
#if BUILDING_DLL
# define DLLIMPORT __declspec (dllexport)
#else /* Not BUILDING_DLL */
# define DLLIMPORT __declspec (dllimport)
#endif /* Not BUILDING_DLL */
#include <windows.h>
DLLIMPORT void HelloWorld (void); //出口函数
LRESULT CALLBACK HookProc(int,WPARAM,LPARAM); //消息勾子
DLLIMPORT BOOL InstallHook(void); //出口函数
DLLIMPORT BOOL UnHook(void); //出口函数
#endif /* _DLL_H_ */
---------------------------
dllmain.c
/* Replace "dll.h" with the name of your header */
#include "dll.h"
#include <windows.h>
#include <stdio.h>
#include <stdlib.h>
#pragma data_seg("share")
HINSTANCE hinst=NULL; //DLL句柄
HHOOK hhk=NULL; //勾子句柄
#pragma data_seg()
#pragma comments(linker,"/section:share,rws")
DLLIMPORT void HelloWorld ()
{
MessageBox (0, "Hello World from DLL! ", "Hi", MB_ICONINFORMATION);
}
LRESULT CALLBACK HookProc(int nCode,WPARAM wParam, LPARAM lParam)
{
if(nCode<0)
return (CallNextHookEx(0,nCode,wParam,lParam));
switch(wParam)
{
case WM_RBUTTONDOWN:
MessageBox(0,"Right button down! ","hi",MB_ICONINFORMATION);
break;
case WM_LBUTTONDOWN:
MessageBox(0,"Left button down! ","hi",MB_ICONINFORMATION);
break;
default:
break;
}
return (CallNextHookEx(0,nCode,wParam,lParam));
}
DLLIMPORT BOOL InstallHook()
{
hhk=SetWindowsHookEx(WH_MOUSE,HookProc,hinst,0);//将回传值放在hhk,hhk是勾子句柄。
if(hhk)
{
MessageBox(0,"Hook Success! ","hi",MB_ICONINFORMATION);
return TRUE;
}
else
{
MessageBox(0,"Hook Fail! ","hi",MB_ICONINFORMATION);
return FALSE;
}
}
DLLIMPORT BOOL UnHook()
{
if (hhk)
{
UnhookWindowsHookEx(hhk);
return TRUE;
}
else
return FALSE;
}
BOOL APIENTRY DllMain (HINSTANCE hInst /* Library instance handle. */ ,
DWORD reason /* Reason this function is being called. */ ,
LPVOID reserved /* Not used. */ )
{
switch (reason)
{
case DLL_PROCESS_ATTACH:
hinst=hInst; //得到DLL句柄，hinst在共享段。
break;
case DLL_PROCESS_DETACH:
break;
case DLL_THREAD_ATTACH:
break;
case DLL_THREAD_DETACH:
break;
}
/* Returns TRUE on success, FALSE on failure */
return TRUE;
}
