Make sure window is animated on show()

[Kwabena]

Is it possible to ensure a window is animated when shown?

So, basically when you create a new dialog it gets shown popping up in a little animation. Then if you kill it or show it again it just appears or disappears. Is there a way to make it animated on hide and show? In particular, for showing.

[Code_ReaQtor]

Try "QPropertyAnimation":http://qt-project.org/doc/qt-4.8/qpropertyanimation.html

[Kwabena]

How do I use that for showing? Also, I think the window manger does something different for MS Windows. Maybe I need to delete cached information about the window or something. I noticed that when the window is shown the first time it animates.

[Code_ReaQtor]

Not sure if this "link":http://stackoverflow.com/questions/3283587/qwidget-resize-animation will directly solve your problem, but try reading it. It will give you insights on how to implement it.

[raven-worx]

do something like this in your dialog window class:
@
void MyDialog::showEvent(QShowEvent* event)
{
QDialog::showEvent(event);

 QPropertyAnimation* anim = new QPropertyAnimation(this, "windowOpacity");
      anim->setStartValue(0.0);
      anim->setEndValue(1.0);
      anim->setDuration(1000);
 anim->start(QAbstractAnimation::DeleteWhenStopped);

}
@