Qt 4.8.6 - Parent Window on Linux

JoNo_21

On Windows if I create 2 windows, with one being the parent of the other the child window becomes a floating window. Namely the child cannot go underneath the parent window. On my Linux box this behavior doesn't seem to work. My code is:

@
#include <QApplication>
#include <QWidget>

int main(int argc, char **argv)
{
QApplication app(argc, argv);

QWidget widget;
widget.setWindowTitle("win1");
widget.show();

QWidget widget2;
widget2.setWindowTitle("win2");
widget2.setParent(&widget, widget.windowFlags());
widget2.show();

}
@

Any suggestions?

andreyc

I guess it depends on a window manager.
For example in Gnome3 a widget window from your example is always below widget2 window.
But widget gets focus when mouse goes over it and I can put it above widget2 if I select "Always on Top" from a titlebar menu.

JoNo_21

Ok, but is there a way to make windows on Linux behave in the same floating manor as on Windows?

The closest I can see is to set the always on top flag for child windows, but that won't really work with children of children correctly.

DBoosalis

Could always do something like this for the first window:

Declare widget1 to have a member childWidget.virtual method for

@ widget1.childWidget = &widget2;@

And write out its virtual method for the focusInEvent() with something like:

@void MainWindow::focusInEvent(QFocusEvent *)
{
if (childWidget)
childWidget->raise();
}
@

Can propigate the raise for all other children as well.