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How to pop up the drop-down box in the appropriate position

3 years 1 month ago #1 by Linlin
How to pop up the drop-down box in the appropriate position was created by Linlin
Hi,

Is it possible to make the pop-up position of the drop-down box adaptive?For example, in this photo, I want it to pop up at the top.

Thank you!
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3 years 1 week ago - 3 years 1 week ago #2 by Linlin
Replied by Linlin on topic How to pop up the drop-down box in the appropriate position
void CustomComboBox::showPopup()
{
createPopup();
if (m_popup == Q_NULL)
return;

const int minPopupWidth = m_popup->minimumWidth();

if (m_popup->centralWidget() != Q_NULL)
m_popup->centralWidget()->updateGeometry();
updatePopupButtons();

QPoint gpos = mapToGlobal(QPoint(0, 0));
QRect rect = QRect(gpos.x(), gpos.y() + height(), qMax(minPopupWidth, width()), m_popup->sizeHint().height());
m_popup->setGeometry(rect);

#ifndef QT_NO_EFFECTS
qScrollEffect(m_popup, true ? QEffects::DownScroll : QEffects::UpScroll, 150);
#endif
m_popup->raise();
m_popup->show();
}
Last edit: 3 years 1 week ago by Linlin.

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