QT全局熱鍵的實現

QT全局熱鍵的實現

一、加載庫

 
 
 
 
 

  
  
  
  
  

 
 
 
 
 
 QT += gui widgets

二、加載頭文件

 
 
 
 
 

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

 
 
 
 
 
#include"MyGlobalShortCut.h"````3、在main函數添加```C++ MyGlobalShortCut *shortcut = new MyGlobalShortCut("Ctrl+F9",&m); QObject::connect(shortcut,SIGNAL(activated()),&m,SLOT(activated()));

四、添加SLOT頭文件

 
 
 
 
 

  
  
  
  
  

  
  
  
  
  

 
 
 
 
 
public slots: void activated();

五、添加SLOT源文件

 
 
 
 
 

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

 
 
 
 
 
void MyDialog::activated(){ qDebug()<<"2222"; QMessageBox::warning(NULL,"ok","OK...OK");}

全局熱鍵實現文件

MyGlobalShortCut.h

 
 
 
 
 

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

 
 
 
 
 
// Qt 升級到5.x版本後// QAbstractEventDispatcher 中函數發生變更// 致使libqxt庫中的qxtGlobalShortcut掛掉// 參考qxtGlobalShortcut寫了一個全局熱鍵類// 用法與qxtGlobalShortcut一致// 在 Win8.1 + Qt5.11 下能正常使用// by 迷路君 2014.03.27#pragma once#include <QApplication>#include <windows.h>#include <MyWinEventFilter.h>#include <QKeySequence>#include <QHash>class MyGlobalShortCut : public QObject{ Q_OBJECTpublic: MyGlobalShortCut(QString key,QObject* app); ~MyGlobalShortCut(); void activateShortcut(); bool registerHotKey(); bool unregisterHotKey(); QHash<QPair<quint32, quint32>, MyGlobalShortCut*> shortcuts;private: QApplication *m_app; MyWinEventFilter *m_filter; QKeySequence m_key; Qt::Key key; Qt::KeyboardModifiers mods; static quint32 nativeKeycode(Qt::Key keycode); static quint32 nativeModifiers(Qt::KeyboardModifiers modifiers);signals: void activated();};

MyGlobalShortCut.cpp

 
 
 
 
 

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

 
 
 
 
 
#include "MyGlobalShortCut.h"MyGlobalShortCut::~MyGlobalShortCut(){ unregisterHotKey();}MyGlobalShortCut::MyGlobalShortCut(QString key, QObject *app){ m_key = QKeySequence(key); m_filter = new MyWinEventFilter(this); m_app->installNativeEventFilter(m_filter); registerHotKey();}void MyGlobalShortCut::activateShortcut(){ emit activated();}bool MyGlobalShortCut::registerHotKey(){ Qt::KeyboardModifiers allMods = Qt::ShiftModifier | Qt::ControlModifier | Qt::AltModifier | Qt::MetaModifier; key = (m_key.isEmpty() ? Qt::Key(0) : Qt::Key((m_key[0] ^ allMods) & m_key[0])); mods = m_key.isEmpty() ? Qt::KeyboardModifiers(0) : Qt::KeyboardModifiers(m_key[0] & allMods); const quint32 nativeKey = nativeKeycode(key); const quint32 nativeMods = nativeModifiers(mods); shortcuts.insert(qMakePair(nativeKey, nativeMods),this); return RegisterHotKey(0, nativeMods ^ nativeKey, nativeMods, nativeKey);}bool MyGlobalShortCut::unregisterHotKey(){ return UnregisterHotKey(0, (quint32)nativeModifiers(mods) ^ (quint32)nativeKeycode(key));}quint32 MyGlobalShortCut::nativeKeycode(Qt::Key key){ switch (key) { case Qt::Key_Escape: return VK_ESCAPE; case Qt::Key_Tab: case Qt::Key_Backtab: return VK_TAB; case Qt::Key_Backspace: return VK_BACK; case Qt::Key_Return: case Qt::Key_Enter: return VK_RETURN; case Qt::Key_Insert: return VK_INSERT; case Qt::Key_Delete: return VK_DELETE; case Qt::Key_Pause: return VK_PAUSE; case Qt::Key_Print: return VK_PRINT; case Qt::Key_Clear: return VK_CLEAR; case Qt::Key_Home: return VK_HOME; case Qt::Key_End: return VK_END; case Qt::Key_Left: return VK_LEFT; case Qt::Key_Up: return VK_UP; case Qt::Key_Right: return VK_RIGHT; case Qt::Key_Down: return VK_DOWN; case Qt::Key_PageUp: return VK_PRIOR; case Qt::Key_PageDown: return VK_NEXT; case Qt::Key_F1: return VK_F1; case Qt::Key_F2: return VK_F2; case Qt::Key_F3: return VK_F3; case Qt::Key_F4: return VK_F4; case Qt::Key_F5: return VK_F5; case Qt::Key_F6: return VK_F6; case Qt::Key_F7: return VK_F7; case Qt::Key_F8: return VK_F8; case Qt::Key_F9: return VK_F9; case Qt::Key_F10: return VK_F10; case Qt::Key_F11: return VK_F11; case Qt::Key_F12: return VK_F12; case Qt::Key_F13: return VK_F13; case Qt::Key_F14: return VK_F14; case Qt::Key_F15: return VK_F15; case Qt::Key_F16: return VK_F16; case Qt::Key_F17: return VK_F17; case Qt::Key_F18: return VK_F18; case Qt::Key_F19: return VK_F19; case Qt::Key_F20: return VK_F20; case Qt::Key_F21: return VK_F21; case Qt::Key_F22: return VK_F22; case Qt::Key_F23: return VK_F23; case Qt::Key_F24: return VK_F24; case Qt::Key_Space: return VK_SPACE; case Qt::Key_Asterisk: return VK_MULTIPLY; case Qt::Key_Plus: return VK_ADD; case Qt::Key_Comma: return VK_SEPARATOR; case Qt::Key_Minus: return VK_SUBTRACT; case Qt::Key_Slash: return VK_DIVIDE; // numbers case Qt::Key_0: case Qt::Key_1: case Qt::Key_2: case Qt::Key_3: case Qt::Key_4: case Qt::Key_5: case Qt::Key_6: case Qt::Key_7: case Qt::Key_8: case Qt::Key_9: return key; // letters case Qt::Key_A: case Qt::Key_B: case Qt::Key_C: case Qt::Key_D: case Qt::Key_E: case Qt::Key_F: case Qt::Key_G: case Qt::Key_H: case Qt::Key_I: case Qt::Key_J: case Qt::Key_K: case Qt::Key_L: case Qt::Key_M: case Qt::Key_N: case Qt::Key_O: case Qt::Key_P: case Qt::Key_Q: case Qt::Key_R: case Qt::Key_S: case Qt::Key_T: case Qt::Key_U: case Qt::Key_V: case Qt::Key_W: case Qt::Key_X: case Qt::Key_Y: case Qt::Key_Z: return key; default: return 0; }}quint32 MyGlobalShortCut::nativeModifiers(Qt::KeyboardModifiers modifiers){ // MOD_ALT, MOD_CONTROL, (MOD_KEYUP), MOD_SHIFT, MOD_WIN quint32 native = 0; if (modifiers & Qt::ShiftModifier) native |= MOD_SHIFT; if (modifiers & Qt::ControlModifier) native |= MOD_CONTROL; if (modifiers & Qt::AltModifier) native |= MOD_ALT; if (modifiers & Qt::MetaModifier) native |= MOD_WIN; // TODO: resolve these? //if (modifiers & Qt::KeypadModifier) //if (modifiers & Qt::GroupSwitchModifier) return native;}

MyWinEventFilter.h

 
 
 
 
 

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

 
 
 
 
 
#pragma once#include <QAbstractNativeEventFilter>class MyGlobalShortCut;class MyWinEventFilter : public QAbstractNativeEventFilter{public: MyWinEventFilter(MyGlobalShortCut *shortcut); ~MyWinEventFilter(); virtual bool nativeEventFilter(const QByteArray &eventType, void *message, long *);private: MyGlobalShortCut *m_shortcut;};

MyWinEventFilter.cpp

 
 
 
 
 

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

  
  
  
  
  

 
 
 
 
 
#include <MyWinEventFilter.h>#include <MyGlobalShortCut.h>MyWinEventFilter::~MyWinEventFilter(){}MyWinEventFilter::MyWinEventFilter(MyGlobalShortCut *shortcut) : m_shortcut(shortcut){}bool MyWinEventFilter::nativeEventFilter(const QByteArray &eventType, void *message, long *){ if(eventType == "windows_generic_MSG") { MSG *msg = static_cast<MSG *>(message); if(msg->message == WM_HOTKEY) {// if(msg->wParam == VK_F10)// {// m_shortcut->activateShortcut();// return true;// } const quint32 keycode = HIWORD(msg->lParam); const quint32 modifiers = LOWORD(msg->lParam); bool res = m_shortcut->shortcuts.value(qMakePair(keycode, modifiers)); if(res) { m_shortcut ->activateShortcut(); return true; } } } return false;}

來自爲知筆記(Wiz)