Windows+QT利用用鼠标键盘钩子捕获得用户在窗口内的输入动作，完整代码，可以直接运行

#include "MainWindow.h" #include "ui_MainWindow.h" #include <QDebug> HHOOK keyHook=NULL; HHOOK mouseHook=NULL; //键盘钩子过程 LRESULT CALLBACK keyProc(int nCode,WPARAM wParam,LPARAM lParam ) { bool forNext = true; if(nCode == HC_ACTION) { forNext = MainWindow::getIns()->keyboardEvent(wParam, lParam); } //返回1表示截取消息不再传递,返回0表示不作处理,消息继续传递 return forNext ? 0 : 1; } //鼠标钩子过程 LRESULT CALLBACK mouseProc(int nCode, WPARAM wParam, LPARAM lParam) { if(nCode == HC_ACTION) //当nCode等于HC_ACTION时，要求得到处理 { MainWindow::getIns()->mouseEvent(wParam, lParam); } //鼠标不需要屏蔽 return 0; } MainWindow* MainWindow::_ins = NULL; MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui::MainWindow) { ui->setupUi(this); } MainWindow* MainWindow::getIns(QWidget *parent) { if(MainWindow::_ins == NULL) { MainWindow::_ins = new MainWindow(parent); } return MainWindow::_ins; } MainWindow::~MainWindow() { delete ui; } void MainWindow::enterEvent(QEvent *event) { //由于加载了钩子之后调试情况下程序反应极慢，所以只是在Release模式下使用钩子 #ifndef DEBUG //底层键盘钩子 keyHook = SetWindowsHookEx(WH_KEYBOARD_LL, keyProc, GetModuleHandle(NULL), 0); //底层鼠标钩子 mouseHook = SetWindowsHookEx(WH_MOUSE_LL, mouseProc, GetModuleHandle(NULL), 0); #endif } void MainWindow::leaveEvent(QEvent *event) { //由于加载了钩子之后调试情况下程序反应极慢，所以只是在Release模式下使用钩子 #ifndef DEBUG //卸载键盘钩子 UnhookWindowsHookEx(keyHook); //卸载鼠标钩子 UnhookWindowsHookEx(mouseHook); #endif } bool MainWindow::checkKeyboardEvent(WPARAM wParam, LPARAM lParam) { if(WM_KEYDOWN == wParam || WM_SYSKEYUP == wParam || WM_SYSKEYDOWN == wParam || WM_SYSKEYUP == wParam) { KBDLLHOOKSTRUCT *pkbhs = (KBDLLHOOKSTRUCT *)lParam; if(pkbhs->vkCode == VK_LWIN || pkbhs->vkCode == VK_RWIN || pkbhs->vkCode == VK_TAB) { //屏蔽Win,Tab return false; } if(pkbhs->vkCode == VK_TAB && pkbhs->flags & LLKHF_ALTDOWN != 0) { //屏蔽Alt+Tab qDebug() << "Alt+Tab"; return false; } if(pkbhs->vkCode == VK_ESCAPE && pkbhs->flags & LLKHF_ALTDOWN != 0) { //屏蔽Alt+Esc return false; } if(pkbhs->vkCode == VK_ESCAPE && GetKeyState(VK_CONTROL) & 0x8000 != 0) { //屏蔽Ctrl+Esc return false; } if(pkbhs->vkCode == VK_F4 && pkbhs->flags & LLKHF_ALTDOWN != 0) { //屏蔽Alt+F4 return false; } if(pkbhs->vkCode == VK_F1) { //屏蔽F1 return false; } } return true; } bool MainWindow::checkMouseEvent(WPARAM wParam, LPARAM lParam) { return true; } bool MainWindow::keyboardEvent(WPARAM wParam, LPARAM lParam) { //判断键盘按键状态和按键扫描码 KBDLLHOOKSTRUCT *pkbhs = (KBDLLHOOKSTRUCT *)lParam; if(WM_KEYDOWN== wParam || WM_SYSKEYDOWN == wParam) { //LWIN:91,RWIN:92,MENU:93 qDebug() << "WM_KEYDOWN >>>> " << pkbhs->scanCode; } else if(WM_KEYUP == wParam || WM_SYSKEYUP == wParam) { qDebug() << "WM_KEYUP >>>> " << pkbhs->scanCode; } return this->checkKeyboardEvent(wParam, lParam); } bool MainWindow::mouseEvent(WPARAM wParam, LPARAM lParam) { MSLLHOOKSTRUCT *msbhs = (MSLLHOOKSTRUCT *)lParam; if(wParam == WM_MOUSEMOVE) { //移动,全局鼠标坐标 qDebug() << "WM_MOUSEMOVE >>>> GOLBAL >>>> x: " << msbhs->pt.x << " y: " << msbhs->pt.y; //移动，窗口内鼠标坐标 qDebug() << "WM_MOUSEMOVE >>>> WINDOW >>>> x: " << msbhs->pt.x - this->geometry().x() << " y: " << msbhs->pt.y - this->geometry().y(); } else if(wParam == WM_LBUTTONDOWN) { //左键压下 qDebug() << "WM_LBUTTONDOWN >>>>"; } else if(wParam == WM_LBUTTONUP) { //左键抬起 qDebug() << "WM_LBUTTONUP >>>>"; } else if(wParam == WM_RBUTTONDOWN) { //右键压下 qDebug() << "WM_RBUTTONDOWN >>>>"; } else if(wParam == WM_RBUTTONUP) { //右键抬起 qDebug() << "WM_RBUTTONUP >>>>"; } else if(wParam == WM_MBUTTONDOWN) { //中键压下 qDebug() << "WM_MBUTTONDOWN >>>>"; } else if(wParam == WM_MBUTTONUP) { //中键抬起 qDebug() << "WM_MBUTTONUP >>>>"; } else if(wParam == WM_MOUSEWHEEL) { //鼠标滚轮滚动 short zDelta = (short)HIWORD(msbhs->mouseData); //获得-120或者120标记滚轮方向 qDebug() << "WM_MOUSEWHEEL >>>> " << zDelta; } return true; }