Tried something like that:
qWidgetP->setAttribute(Qt::WA_DontShowOnScreen,
true);
qWidgetP->show();
qWidgetP->hide();
qWidgetP->setAttribute(Qt::WA_DontShowOnScreen,
false);
It doesn’t do as advertised (window does not show, but also doesn’t lay out the
geometry of widgets)
-dave
> On May 29, 2024, at 11:29 AM, John Weeks <j...@wavemetrics.com> wrote:
>
> Well, I wasn't going to say anything ("If you don’ know how to answer it,
> please don’t chime in, thanks.")
>
> In my experience, Qt doesn't maintain a good notion of a window's size until
> it's shown. But you are guaranteed a Resize event as the window is being
> shown, so if you can manage it, you need to handle the Resize event and do
> your polishing and layouting there.
>
> In fact, I had for a while a function called ShowAndHideInvisibly(); the
> important part of it was like this:
>> getQWidget()->setAttribute(Qt::WA_DontShowOnScreen, true);
>> WMshow();
>> WMhide();
>> getQWidget()->setAttribute(Qt::WA_DontShowOnScreen, false);
>
> Maybe that helps. Setting the attribute prevents the screen flash.
>
> -John Weeks
> WaveMetrics, Inc.
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