void moveWindowCenter(QWidget* widget)
{
if (widget) {
QRect re = QApplication::activeWindow()->screen()->availableGeometry();
widget->move((re.width() - widget->width()) / 2 + re.x(),
(re.height() - widget->height()) / 2);
}
}
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调用
widget.adjustSize();
moveWindowCenter(widget);
widget.show();
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防坑提示:多屏幕时,弹出式窗口,可在当前屏幕居中,不会在其它屏幕居中