This change restores a proper function of the "(?)" button in the window
decorations which is used as a clue for the user to check what a particular
widget is supposed to do. The change is only implemented for QtWidgets because
the underlying QWhatsThis is inherently widget-specific -- which is why it sends
an event to QGuiApplication, but only processes it in the QtWidget-specific
QApplication.
Thanks to Alberto Mardegan and Gunnar Sletta for their feedback on this patch.
Change-Id: Ibb912e3960f1e9aec54c5ed77ade1c6744d6ca23
Reviewed-by: Alberto Mardegan <mardy@users.sourceforge.net>
Reviewed-by: Gunnar Sletta <gunnar.sletta@digia.com>
Reviewed-by: Samuel Rødal <samuel.rodal@digia.com>