How to Bring the Widget Bring to front in Qt?

Please have a look at this screenshot:

The circles are cu开发者_StackOverflow中文版stom controls. When I click a control, I need to bring the widget to the front. Ex. if I click the second circle it should look like this:

When the control is clicked I am able to get the sender (i.e. the control). Only thing is how to bring the object to the front.

Please help me fix this issue.

Have you tried QWidget::raise()?

Raises this widget to the top of the parent widget's stack. After this call the widget will be visually in front of any overlapping sibling widgets.
Note: When using activateWindow(), you can call this function to ensure that the window is stacked on top.

So the pattern I usually use that will ensure a window is shown, brought to the front of sibling widgets and brought in front of other applications is:

widget->show();
widget->activateWindow();
widget->raise();