I have a custom QWidget and I simple don't want it to show up in the taskbar. I have a QSystemTrayIcon for managing exiting/minimizing etc.
Answer
I think the only thing you need here is some sort of parent placeholder widget. If you create your widget without a parent it is considered a top level window. But if you create it as a child of a top level window it is considered a child window und doesn't get a taskbar entry per se. The parent window, on the other hand, also doesn't get a taskbar entry because you never set it visible: This code here works for me:
class MyWindowWidget : public QWidget
{
public:
MyWindowWidget(QWidget *parent)
: QWidget(parent, Qt::Dialog)
{
}
};
int main(int argc, char *argv[])
{
QApplication app(argc, argv);
QMainWindow window;
MyWindowWidget widget(&window);
widget.show();
return app.exec();
}
No taskbar entry is ever shown, if this is want you intended.