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× DataGrid for Qt.C++

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

2 months 2 weeks ago #1 by Linlin Lei
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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1 month 2 weeks ago - 1 month 2 weeks ago #2 by Linlin Lei
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: 1 month 2 weeks ago by Linlin Lei.

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