[Qt-interest] QStackedWidget showing two pages

[Steven Doerfler]

I've got a QStackedWidget in a part of my main window .  Each of the
pages it displays contains a half-dozen widgets.  Another part of my
main window has a list of items.  Selecting an item from the list calls
QStackedWidget::setCurrentWidget to make the appropriate set of widgets
appear, for that type of item.

A tester reports that sometimes two of the QStackedWidget's pages appear
at the same time.  I haven't been able to reproduce this, but I've seen
screen shots.

What could cause this?

Is it safe to enable or disable a widget on a page QStackedWidget isn't
currently showing (i.e. a hidden page) or might that cause the page to
become visible sometimes?

Is it possible that a user could click on the list of items to switch
the QStackedWidget from page 1 to page 2, then click on a UI element on
page 1 before my program can switch?  Might getting the focus make page
1's widgets visible again after QStackedWidget has hidden them?  (If so,
is there a good way to prevent that?)

Steven

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