Qt 检测标题栏上的鼠标单击（Windows）

event 或 mousePressEvent 函数适用于小部件内部，但我想在单击标题栏（菜单栏的上部，包含关闭按钮等）时捕获

我怎样才能做到这一点？

您可以重写nativeEvent，然后获取鼠标位置与geometry（不包括窗口框架）和frameGeometry（包括窗口框架）进行比较，以检测它是否击中标题栏

bool MyClass::nativeEvent(const QByteArray & eventType, void * message, long * result)
{
    MSG* msg = (MSG*)(message);
    if (msg->message == WM_NCLBUTTONDOWN)
    {

        int mouseX = GET_X_LPARAM(msg->lParam);
        int mouseY = GET_Y_LPARAM(msg->lParam);
        QRect frame = frameGeometry();
        QRect content = geometry();

        qDebug() << "mouseX: " << mouseX << "mouseY:" << mouseY;
        qDebug() << "frame: " << frame;
        qDebug() << "content: " << content;

        if (mouseY < content.y() && mouseY >= frame.y())
        {
            qDebug() << "Hit title bar";
        }
    }

    *result = 0;
    return false;
}