qt - How to hide a QWidget under its parent? -

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i have modal qdialog, on click of button slides modeless child qdialog out underneath it. problem have child stays on top of parent during animation.

i think away applying mask on portion of child overlaps parent, feels i'm missing more obvious way of placing child under parent.

i'm using qt 4.5. here's sample code:

void mainwindow::on_mymenu_triggered() {     parentdlg = new qdialog(this);     parentdlg->setfixedsize(250, 250);     parentdlg->setmodal(true);     parentdlg->show();      childdlg = new qdialog(parentdlg);     childdlg->setfixedsize(150, 150);     childdlg->show();     qtimeline* timeline = new qtimeline(1000, this);     connect(timeline, signal(valuechanged(qreal)), this,  slot(childdlgstepchanged(qreal)));     timeline->start();   }  void mainwindow::childdlgstepchanged(qreal) {     int parentx = parentdlg->framegeometry().x();     int parenty = parentdlg->geometry().y();      // move child dialog left of parent.     childdlg->move(parentx - 150 * step, parenty); }

thanks in advance.

child widgets rendered on parent have break relationship in order achieve affect looking directly. use raise() or lower() if both dialogs had same parent.


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