Qt系统托盘程序

1：首先在程序的main函数中添加：

void main（）

{

QApplication a(argc, argv);

if ( !QSystemTrayIcon::isSystemTrayAvailable() )

{

MessageBoxQt（“没有检测到系统托盘”）；

return 1;

}

QApplication::setQuitOnLastWindowClosed(false);

。。。

}

2：在指定窗口中（一般是主窗口）,添加相应代码：

class trayWindow : public QMainWindow

{

public slots:

void slot_create_tray() //创建系统托盘；

{

createActions();

createTrayIcon();

connect(trayIcon, SIGNAL(activated(QSystemTrayIcon::ActivationReason)),

this, SLOT(iconActivated(QSystemTrayIcon::ActivationReason)));

QIcon icon("G:\\t.png");

trayIcon->setIcon(icon); //设置托盘图标；

trayIcon->show(); //显示托盘；

}

public:

QAction *minimizeAction;

QAction *maximizeAction;

QAction *restoreAction;

QAction *quitAction;

QSystemTrayIcon *trayIcon;

QMenu *trayIconMenu;

void createActions() //创建添加菜单QAction;

{

minimizeAction = new QAction(tr("Mi&nimize"), this);

connect(minimizeAction, SIGNAL(triggered()), this, SLOT(hide()));

maximizeAction = new QAction(tr("Ma&ximize"), this);

connect(maximizeAction, SIGNAL(triggered()), this, SLOT(showMaximized()));

restoreAction = new QAction(tr("&Restore"), this);

connect(restoreAction, SIGNAL(triggered()), this, SLOT(showNormal()));

quitAction = new QAction(tr("&Quit"), this);

connect(quitAction, SIGNAL(triggered()), qApp, SLOT(quit()));

}

void createTrayIcon() //创建托盘，添加菜单；

{

trayIconMenu = new QMenu(this);

trayIconMenu->addAction(minimizeAction);

trayIconMenu->addAction(maximizeAction);

trayIconMenu->addAction(restoreAction);

trayIconMenu->addSeparator();

trayIconMenu->addAction(quitAction);

trayIcon = new QSystemTrayIcon(this);

trayIcon->setContextMenu(trayIconMenu);

}

public slots:

void iconActivated(QSystemTrayIcon::ActivationReason reason) //托盘图标响应鼠标消息

{

switch (reason)

{

case QSystemTrayIcon::Trigger:

case QSystemTrayIcon::DoubleClick:

break;

case QSystemTrayIcon::MiddleClick:

break;

default:

;

}

}

}

通过上述方法就可以制作一个简单的托盘应用程序；

这里简单讲托盘程序的编写过程将清楚；

如果想查看更多托盘程序应用，可以参考Qt安装包中的例子: Qt\Qt5.1.1\5.1.1\msvc2010\examples\widgets\desktop\systray ;