[Qt-interest] Mouse movement required to make things happen?

[Bradley T. Hughes]

On 02/23/2010 08:04 PM, Bob Hood wrote:
> We're seeing a rather strange behavior (Qt 4.6.1 Windows Vista 64-bit,
> and verified to also happen with 4.6.2).  We're seeing action initiated
> by the user (from the GUI) requiring the mouse to move before they
> begin.  For example, I have a window that animates as an overlay onto
> the main interface, and I do this using a timer to move it manually.
> When I activate the code by selecting a menu item from the main
> interface, if the mouse remains perfectly still, the window will not
> appear.  It is only after I move the mouse at least one pixel in any
> direction that the mechanism activates, and the window pops into view.
>
> Note that I've also tried using QPropertyAnimation, and I have the same
> problem after start()'ing it.  The mouse has to move at least one pixel
> before the animation will commence.
>
> Anybody have any clues as to why this weird Qt behavior is occurring,
> and how to make it stop?

Note that bug reports should be reported directly to bugreports.qt.nokia.com

In this particular case, we know about it, see 
http://bugreports.qt.nokia.com/browse/QTBUG-7728

;)

-- 
Bradley T. Hughes (Nokia-D-Qt/Oslo), bradley.hughes at nokia.com
Sandakervn. 116, P.O. Box 4332 Nydalen, 0402 Oslo, Norway