Problem with QWidget->mapToGlobal()

Shaun Reich shaun.reich at
Tue Jul 26 22:55:15 BST 2011

I have the same problem with master and Qt 4.7.

Clicking the windeco icon on a window which is on either screen
results in the menu displaying as far left on the left screen, and the
top of the screen + (heightOfTitlebar) it seems.
Simply right-clicking the titlebar itself results in an incorrect
offset (resulting in it being on the left-most screen at the top. The
difference is that the first one is statically always at left-top. The
second case (sort of) follows the x axis of the titlebar, but at the

Anyways, ran it through gdb just for curiousity's sake and yeah
mapToGlobal isn't giving what one might expect. Does the widget need a
parent or something? Because other uses of it seem pretty similar to
this one, yet they work fine. or is this some qt/x bug?

Shaun Reich,
KDE Software Developer (

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