生活_傻大方

  1. 首页

qt中keyevent怎么用

Qt编写安防视频监控系统9-自动隐藏光标

} else if(keyEvent->modifiers()&Qt:AltModifier){ if(keyValue=Qt:Key_Enter|keyValue=Qt:Key_Return){ emit keyPressed("alt+enter");return true;} } } if(event->type()=QEvent:MouseMove){/记住最后鼠标移动的时间,超过...

Qt开发-QML基本元素

anchors.centerIn:parent } focus:true Keys.onPressed:{ if(event.key=Qt.Key_A)label.text='Key A was pressed' else if(event.key=Qt.Key_B)label.text='Key B was pressed' else if(event.key=Qt.Key_C)label.text='Key C ...

Qt编写自定义控件36-图片浏览器

} } void ImageView:keyPressEvent(QKeyEvent*keyEvent){ if(keyEvent->key()=Qt:Key_Left|keyEvent->key()=Qt:Key_Up){ movePrevious();} else if(keyEvent->key()=Qt:Key_Right|keyEvent->key()=Qt:Key_Down){ moveNext();} ...

Qt写2048游戏

} QT_END_NAMESPACE class MainWindow:public QMainWindow { Q_OBJECT public:explicit MainWindow(QWidget*parent=nullptr);MainWindow();void paintEvent(QPaintEvent*);void keyPressEvent(QKeyEvent*event);void PressUp()...

Qt开发-NotePad实例开发-今日头条

QKeySequence是QT中与快捷键相关的类，KEY是QT中代表键值的常量。NotePad菜单栏共有文件、编辑、格式、查看、帮助五组下拉菜单，每组下拉菜单使用一个函数构建。bool MainWindow:initMenuBar(){ bool ret=true;QMenuBar*mb=...

基于QT的跨平台虚拟键盘设计与实现

QString key=keyEvent->text；foreach（QToolButton*Btn，keyValue）{ if（Btn->text=key）{ Btn->click；} （4）用户将选中的汉字或者词组发送到QLineEdit中，至此中文输入法完成。3 测试 桌面系统环境为Linux（Ubuntu12.04）...

QT捕获键盘按键按下和松开，这里用ctrl和alt键做出单选和多选

void record:keyPressEvent(QKeyEvent*event){ switch(event->key()){ case Qt:Key_Alt:alt_key=KEY_STATE_Press;CLogC_debug("%s:This is debug:alt_key Press\n",_FUNCTION_);break;case Qt:Key_Control:ctrl_key=KEY_STATE_...

Qt OpenGL 位图字体

1 void MyGLWidget:keyPressEvent(QKeyEvent*event)2 { 3 switch(event->key())4 { 5 case Qt:Key_F1:/F1为全屏和普通屏的切换键 6 fullscreen=!fullscreen;7 if(fullscreen)8 ...

Qt OpenGL 创建一个OpenGL窗口

1 void MyGLWidget:keyPressEvent(QKeyEvent*event)2 { 3 switch(event->key())4 { 5/F1为全屏和普通屏的切换键 6 case Qt:Key_F1:7 fullscreen=!fullscreen;8 if(fullscreen)9 { 10 showFullScreen();11 } 12 else 13 { 14 ...

Qt使用电容屏

cat/proc/bus/input/devices I:Bus=0003 Vendor=222a Product=0001 Version=0110 N:Name="ILITEK ILITEK-TP"P:Phys=usb-11000000.xhci-1.4/input1 S:Sysfs=devices/soc/11000000.xhci/usb1/1-1/1-1.4/1-1.4:1.1/0003:222A:0001...