DLL项目的头文件
#ifdef KEYHOOKLIB_EXPORT //此宏将在CPP文件中定义 #define KEYHOOKLIB_API __declspec(dllexport) #else #define KEYHOOKLIB_API __declspec(dllimport) #endif #define HM_KEY WM_USER+101 BOOL KEYHOOKLIB_API WINAPI SetKeyHook(BOOL bInstall,DWORD dwThreadId = 0,HWND hWndCaller=NULL);
DLL项目CPP文件
#include <windows.h> #define KEYHOOKLIB_EXPORT #include "a.h" #pragma data_seg("MyShared")//用共享数据段来保存主窗口句柄和钩子句柄 HWND g_hWndCaller = NULL; HHOOK g_hHook = NULL; #pragma data_seg() //通过内存地址取得模块句柄 HMODULE WINAPI ModuleFromAddress(PVOID pv) { MEMORY_BASIC_INFORMATION mbi;//此结构请查看MSDN if(::VirtualQuery(pv,&mbi,sizeof(mbi))) { return (HMODULE)mbi.AllocationBase; } return NULL; } //钩子的回调函数 LRESULT CALLBACK KeyHookProc(int nCode,//HOOK代码,钩子函数使用这个参数来确定任务 WPARAM wParam, LPARAM lParam) { if(nCode<0||nCode == HC_NOREMOVE)//没用的消息 { return ::CallNextHookEx(g_hHook,nCode,wParam,lParam); } if(lParam&0x40000000)//消息重复 { return ::CallNextHookEx(g_hHook,nCode,wParam,lParam); } ::PostMessage(g_hWndCaller,WM_CLOSE,0,0); return ::CallNextHookEx(g_hHook,nCode,wParam,lParam); } //给系统注册钩子 BOOL WINAPI SetKeyHook(BOOL bInstall,DWORD dwThreadId,HWND hWndCaller) { BOOL bOK; g_hWndCaller = hWndCaller; if(bInstall) { HMODULE temp = ModuleFromAddress(KeyHookProc);//钩子函数所在的DLL的实例句柄 g_hHook = ::SetWindowsHookEx( WH_KEYBOARD,//键盘钩子标志 KeyHookProc,//回调函数 temp, dwThreadId//线程句柄 ); if(g_hHook!=NULL) { bOK = TRUE; } else { bOK = FALSE; } } else { bOK = ::UnhookWindowsHookEx(g_hHook);//卸载钩子 g_hHook = NULL; } return bOK; }
DLL项目的DEF文件
LIBRARY "gouzi" EXPORTS SetKeyHook SECTIONS MyShared Read Write Shared
注册钩子的工程
#include <windows.h> #include <iostream> #include "a1.h"//DLL中的头文件 using namespace std; #pragma comment(lib,"gouzi") void main() { ::SetConsoleTitle("aaa"); //HWND hWnd = ::FindWindow(NULL,"Our First Window"); HWND hWnd = ::FindWindow("notepad",NULL); //::SendMessage(hWnd,HM_KEY,) if(!SetKeyHook(TRUE,0,hWnd)) { cout<<"安装钩子失败"<<endl; return; } char a; while(true) { cin>>a; if(a == 'u') { SetKeyHook(FALSE,0,hWnd); return; } } return; }
时间: 2024-11-08 21:31:57