1
我試圖在Ubuntu 13.04中爲亮度控制創建一個應用程序。這個想法是製作一個托盤圖標和滑塊,它會在按下圖標時出現。問題是托盤菜單隻包含一個空的項目。這裏是代碼塊,它的作品,但不正確(這表明只有當空菜單項按下滑塊):使QSlider在QSystemTrayIcon中工作
cntrl::cntrl(QWidget *parent):
QWidget(parent)
{
value = 2500;
slider = new QSlider (Qt::Horizontal,this);
slider->setValue(2500);
slider -> setRange(0,maxBrightness);
slider -> setSingleStep(50);
slider->setPageStep(50);
tray = new QSystemTrayIcon (this);
menu = new QMenu (this);
act = new QWidgetAction (this);
act->setDefaultWidget(slider);
menu->addAction(act);
tray->setContextMenu(menu);
tray->setIcon(QIcon(":/brightness2.png"));
tray->show();
connect (slider,SIGNAL(valueChanged(int)),this,SLOT(changeBrightness(int)));
connect(act,SIGNAL(triggered()),menu,SLOT(show())); //trying to make it work somehow
}
有什麼不對?