设置钩子函数:
SetWindowsHookEx(WH_MOUSE, HookMouseProce, NULL, GetCurrentThreadId());
钩子的回调函数:
LRESULT CALLBACK HookMouseProce(int nCode, WPARAM wParam, LPARAM lParam);
钩子的取消函数:
UnhookWindowsHookEx(g_hookmouse);
DLL导出:
extern “C” __declspec(dllexport) BOOL InstallMouseHook();
dllhook.h
#include"dllhook.h" BOOL InstallMouseHook() { g_mouseHook=SetWindowsHookEx(WH_MOUSE, HookMouseProce, GetModuleHandle(TEXT("dllhook")), 0); if (g_mouseHook != NULL) return 1; else return 0; } LRESULT CALLBACK HookMouseProce(int nCode, WPARAM wParam, LPARAM lParam)//鼠标钩子处理函数 { return 1; //return CallNextHookEx(g_mouseHook,nCode,wParam,lParam); }
dllhook.cpp
#include"dllhook.h" BOOL InstallMouseHook() { g_mouseHook=SetWindowsHookEx(WH_MOUSE, HookMouseProce, GetModuleHandle(TEXT("dllhook")), 0); if (g_mouseHook != NULL) return 1; else return 0; } LRESULT CALLBACK HookMouseProce(int nCode, WPARAM wParam, LPARAM lParam)//鼠标钩子处理函数 { return 1; //return CallNextHookEx(g_mouseHook,nCode,wParam,lParam); }
Hooktest.cpp
#include "windows.h" #pragma comment(lib,"dllhook.lib") extern "C" __declspec(dllimport) BOOL InstallMouseHook(); LRESULT CALLBACK HookMouseProce(int nCode, WPARAM wParam, LPARAM lParam)//鼠标钩子处理函数 { return 1; } HHOOK g_hookmouse; //6、处理消息(窗口过程) //CALLBACK代表__stdcall参数传递顺序 从右往左依次入栈,并且在函数返回前自动清空堆栈内容 LRESULT CALLBACK WindowProc( HWND hwnd, //消息所属窗口句柄 UINT uMsg, //具体消息名称,WM_XXX WPARAM wparam, //键盘附加消息 LPARAM lparam //鼠标附加消息 ) { switch (uMsg) { case WM_CREATE: //g_hookmouse = SetWindowsHookEx(WH_MOUSE, HookMouseProce, NULL, GetCurrentThreadId());//鼠标钩子 InstallMouseHook(); break; case WM_CLOSE: DestroyWindow(hwnd); //触发WM_DESTROY break; case WM_DESTROY: PostQuitMessage(0); //发送退出消息 break; case WM_LBUTTONDOWN: //鼠标左键按下消息 { int xPos; int yPos; xPos = LOWORD(lparam); yPos = HIWORD(lparam); //打印操作,通常同MessageBox TCHAR buf[1024]; wsprintf(buf, TEXT("x=%d,y=%d"), xPos, yPos); //所属窗口、显示内容、标题内容、关联按键类型 MessageBox(hwnd, buf, TEXT("鼠标按下"), MB_OK); break; } case WM_KEYDOWN: //键盘消息 UnhookWindowsHookEx(g_hookmouse);//删除钩子 MessageBox(hwnd, TEXT("键盘按下"), TEXT("键盘消息"), MB_OK); break; case WM_PAINT: //绘图 { PAINTSTRUCT ps; //绘图结构体 HDC hdc = BeginPaint(hwnd, &ps); //绘制文字 TextOut(hdc, 100, 100, TEXT("helloworld"), strlen("helloworld")); EndPaint(hwnd, &ps); break; } default: break; } //默认方式处理 return DefWindowProc(hwnd, uMsg, wparam, lparam); } int WINAPI WinMain( HINSTANCE hInstance, //应用程序实例句柄 HINSTANCE hPrevInstance, //前一个应用程序实例句柄,在win32环境下基本值NULL,不起作用 LPSTR lpCmdLine, //char *argv[] 命令行参数数组 int nShowCmd) //窗口显示命令,最大化最小化 { //实现底层窗口 6步骤 //1、设计窗口类 //2、注册窗口类 //3、创建窗口类 //4、显示和更新窗口 //5、通过循环取消息 //6、处理消息(窗口过程) //1、设计窗口 WNDCLASS wc; wc.cbClsExtra = 0;//类额外的内存,通常为零 wc.cbWndExtra = 0;//窗口额外的内存,通常为零 wc.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);//设置背景 wc.hCursor = LoadCursor(NULL, IDC_HAND);//设置光标,如果第一个参数为NULL,代表使用系统提供的默认光标 wc.hIcon = LoadIcon(NULL, IDI_WARNING); wc.hInstance = hInstance;//当前实例句柄,WinMain函数中形参即可 wc.lpfnWndProc = WindowProc;//窗口过程函数,回调函数,名称可以随便起 wc.lpszClassName = TEXT("WINDOW");//指定窗口类名 wc.lpszMenuName = NULL;//菜单名,没有填NULL wc.style = 0;//0代表默认风格 //2、注册窗口类 RegisterClass(&wc); //3、创建窗口 /* lpClassName, //类名 lpWindowName, //窗口名 dwStyle, //显示风格 WS_OVERLAPPEDWINDOW x, y,\ //创建窗口的起始坐标 CW_USEDEFAULT nWidth,nHeight, //创建窗口默认宽高 hWndParent, //父窗口,NULL hMenu, 菜单 NULL hInstance, 实例句柄,hInstance lpParam 其他参数 NULL */ HWND hwnd = CreateWindow(wc.lpszClassName, TEXT("TEXT WINDOW"), WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, NULL, NULL, hInstance, NULL); //4、显示和更新 ShowWindow(hwnd, SW_SHOWNORMAL); UpdateWindow(hwnd); //5、通过循环取消息 /* HWND hwnd; //主窗口 UINT message; //消息名称 WM_XXXXX(WINDOW MESSAGE) WPARAM wParam; //附加消息 键盘 LPARAM lParam; //附加消息 鼠标左右键 DWORD time; //消息产生时间, POINT pt; //附加消息 鼠标 x,y坐标 */ MSG msg; while (1) { /* 参数 _Out_ LPMSG lpMsg, 消息结构体 _In_opt_ HWND hWnd, NULL 捕获所有窗口消息 _In_ UINT wMsgFilterMin, 过滤最小消息数量 _In_ UINT wMsgFilterMax 过滤最大消息数量 都写0代表捕获所有消息 */ if (GetMessage(&msg, NULL, 0, 0) == FALSE) { break; } TranslateMessage(&msg); DispatchMessage(&msg); } return 0; }