Getting Focus to Window

Hi

I am having UI file of a window and i want that it get focus ,i only have access to UI file . I tried to change focusPolicy to StrongFocus but it didnt help me , window do raise at top of other but i need to click on window to get foucs , is it possible to get window focus without clicking on window ?

QWidget::setFocus() and/or QWidget::activateWindow()