[Qt-interest] mousePressEvent() reports wrong coordinates

[Nikos Chantziaras]

I have a QWidget subclass in which I override mousePressEvent() and 
mouseReleaseEvent().  The widget is viewable through a QScrollArea and 
is set-up with QScrollArea::setWidget().

The problem is that when the QScrollArea scrolls the widget, and the 
mouse is not moved, the mouse click handlers contain the wrong 
coordinates (the ones prior to scrolling, from when the mouse was last 
moved.)  The only way to update the coordinates is to move the mouse.

This results in bugs like this:

The custom widget is displaying a document with hyperlinks in it.  When 
you click on a link, the document scrolls to a different position.  Now, 
if you don't move the mouse at all, and click again, mousePressEvent() 
will report that the mouse is still over the hyperlink that was just 
clicked, even though it scrolled up or down and the mouse is over a 
different QWidget position.  So even though the widget "moves away" from 
the mouse, the coordinates are not updated since it's the widget that 
moves relative to the mouse, not vice versa.

How can I solve this problem?