[原创]多屏幕时弹出式窗口居中，防坑 [复制链接]

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

    QDesktopWidget * deskTop = QApplication::desktop();
    int curMonitor = deskTop->screenNumber(this);
    QRect re = deskTop->availableGeometry(curMonitor);
widget->move((re.width() - widget->width()) / 2 + re.x(),
                     (re.height() - widget->height()) / 2);