Cannot get QSystemTrayIcon to work correctly with activation reason

Question

I am using Ubuntu 12.04 and although I can create a tray icon with a useful menu, I cannot control its actions:

trayIcon = new QSystemTrayIcon(this); trayIcon->setIcon(QIcon(":/icons/Pictures/icon.png")); trayIcon->setToolTip(QString("Hello there...")); connect(trayIcon,SIGNAL(activated(QSystemTrayIcon::ActivationReason)),this,SLOT(clickSysTrayIcon(QSystemTrayIcon::ActivationReason))); connect(this,SIGNAL(minimized()),this,SLOT(hide()),Qt::QueuedConnection); QMenu *changer_menu = new QMenu; Show_action = new QAction(tr("S&how"),this); Show_action->setIconVisibleInMenu(true); connect(Show_action, SIGNAL(triggered()), this, SLOT(showClicked())); changer_menu->addAction(Show_action); changer_menu->addSeparator(); Quit_action = new QAction(tr("&Quit"), this); Quit_action->setIconVisibleInMenu(true);; connect(Quit_action, SIGNAL(triggered()), this, SLOT(close_minimize())); changer_menu->addAction(Quit_action); trayIcon->setContextMenu(changer_menu); trayIcon->show(); 

ClickSysTrayIcon (QSystemTrayIcon :: ActivationReason) is as follows:

 void MainWindow::clickSysTrayIcon(QSystemTrayIcon::ActivationReason reason) { //reason is a variable that holds the type of activation or click done on the icon tray qDebug() << "I'm in!"; } 

and, defined in the header file as:

 private Q_SLOTS: void clickSysTrayIcon(QSystemTrayIcon::ActivationReason reason); 

However, I can’t get "I'm in!". message to be displayed. I tried to make it work with left / right clicks, with a middle click and with the mouse wheel, but I never see this message being displayed.

What's wrong?

EDIT: There seems to be something wrong with the specific system, Ubuntu 12.04, because it no longer uses tray icons and only indicators. So, there is a program that uses tray icons and converts them into indicators. But then the functions of the indicators disappeared. I know that this system is to blame, because the same program under the same code works fine under Lubuntu 12.04 with the LXDE desktop.

I blame Ubuntu for this. The sni-qt package does not move very well from tray icons to indicators, ensuring that indicators can interact when pressed, on rollers, etc. It's a shame! Any solutions to this problem?

My reward ends, so if there is someone who can solve the problem, I would be grateful!

Answer 1

Raise the problem to the people who have the greatest impact on projects.

https://help.ubuntu.com/community/ReportingBugs#How_to_report_bugs

https://bugreports.qt.io/

workaround

I would make a floating frameless qwidget on top of the indicator area where your indicator will be displayed, and then add the corresponding mouseEvent functions to it.

Here is the starting point for this style of work. I don't know how this is kosher, but on Windows it works very well. I know that there are some UI settings and tools for Windows that use this style of layered elements like DisplayFusion and TeamViewer. I haven't tested it on Ubuntu yet, but it should work the same.

 #include <QtGui/QWidget> #include <QMenu> #include <QSystemTrayIcon> #include <QMouseEvent> #include <QPixmap> #include <QAction> #include <QDebug> #include <QPaintEvent> #include <QPainter> #include <QApplication> #include <QTimerEvent> class Widget : public QWidget { Q_OBJECT public: Widget(QWidget *parent = 0) : QWidget(parent) { // setup this widget to be borderless, transparent around the image // and always on top // and not to have a presence in the "visible window list" this->setWindowFlags( Qt::WindowStaysOnTopHint | Qt::FramelessWindowHint | Qt::Tool); this->setAttribute(Qt::WA_TranslucentBackground); // necessary if you want to track when you enter and leave the widget rect with the mouse this->setMouseTracking(true); m_trayIcon = new QSystemTrayIcon(this); m_trayIcon->setIcon(QIcon("icon1.ico")); m_trayIcon->setToolTip(QString("Hello there...")); m_changer_menu = new QMenu; m_show_action = new QAction(tr("S&how"),this); m_show_action->setIconVisibleInMenu(true); connect(m_show_action, SIGNAL(triggered()), this, SLOT(showClicked())); m_changer_menu->addAction(m_show_action); m_changer_menu->addSeparator(); m_quit_action = new QAction(tr("&Quit"), this); m_quit_action->setIconVisibleInMenu(true);; connect(m_quit_action, SIGNAL(triggered()), this, SLOT(close_minimize())); m_changer_menu->addAction(m_quit_action); m_trayIcon->setContextMenu(m_changer_menu); m_trayIcon->show(); QPixmap p("icon2.ico"); m_pix = p.scaled(QSize(m_trayIcon->geometry().width(), m_trayIcon->geometry().height()), Qt::IgnoreAspectRatio, Qt::SmoothTransformation); this->move(m_trayIcon->geometry().x() ,m_trayIcon->geometry().y()); this->resize(m_trayIcon->geometry().width(), m_trayIcon->geometry().height()); // qDebug() << m_trayIcon->geometry(); // qDebug() << this->geometry(); // This assumes that the notification is stationary. If you want it to move // with the tray icon underneath, you will need to subclass QSystemTrayIcon // and track its move and resize and probably also its show and hide events // raise itself 15x a second this->startTimer(1000/15); } ~Widget(){ } public slots: void mouseDoubleClickEvent(QMouseEvent *) { qDebug() << Q_FUNC_INFO; } void mouseReleaseEvent(QMouseEvent * me) { qDebug() << Q_FUNC_INFO; switch(me->button()) { case Qt::LeftButton: qDebug() << "Left Click"; break; case Qt::RightButton: qDebug() << "Right Click"; m_changer_menu->popup(this->geometry().topLeft() + me->pos()); break; default: qDebug() << "other click"; break; } } void showClicked() { qDebug() << Q_FUNC_INFO; } void close_minimize() { qDebug() << Q_FUNC_INFO; qApp->exit(); } void paintEvent(QPaintEvent *) { QPainter aPainter(this); aPainter.drawPixmap(rect(), m_pix); } void timerEvent(QTimerEvent *) { if(!m_changer_menu->isVisible()) this->raise(); } private: QPixmap m_pix; QSystemTrayIcon * m_trayIcon; QMenu * m_changer_menu; QAction * m_quit_action; QAction * m_show_action; }; 

and here is the main function ...

 #include <QtGui/QApplication> #include "widget.h" int main(int argc, char *argv[]) { QApplication a(argc, argv); Widget w; w.show(); return a.exec(); }