如何在Qt中为QMainWindow切换“始终在顶部”，而不会导致闪烁或闪烁？

问题描述

  void MainWindow :: on_actionAlways_on_Top_triggered（bool checked）
 {
 Qt :: WindowFlags flags = this-> windowFlags（）; 
 if（checked）
 {
 this-> setWindowFlags（flags | Qt :: CustomizeWindowHint | Qt :: WindowStaysOnTopHint）; 
 this-> show（）; 
} 
 else 
 {
 this-> setWindowFlags（flags ^（Qt :: CustomizeWindowHint | Qt :: WindowStaysOnTopHint））; 
 this-> show（）;上面的解决方案是可行的，但是因为setWindowFlags隐藏了窗口，所以我们可以使用下面的代码：它需要重新显示，当然不看起来很优雅。那么如何在没有闪烁副作用的情况下切换QMainWindow的始终在顶部？
解决方案
诺基亚：
但有时，如果你被困在一个像这样丑陋的效果，你可以有意拖出它
 
 
 
可能弹出一个不在窗口中的进度条，说调整窗口属性！使窗口消失存在然后重新进入，并关闭进度条弹出窗口。
 
void MainWindow::on_actionAlways_on_Top_triggered(bool checked)
{
    Qt::WindowFlags flags = this->windowFlags();
    if (checked)
    {
        this->setWindowFlags(flags | Qt::CustomizeWindowHint | Qt::WindowStaysOnTopHint);
        this->show();
    }
    else
    {
        this->setWindowFlags(flags ^ (Qt::CustomizeWindowHint | Qt::WindowStaysOnTopHint));
        this->show();
    }
}
The above solution works but because setWindowFlags hides the window, it needs to be re-shown and of course that doesn't look very elegant. So how do I toggle "always on top" for a QMainWindow without that "flashing" side effect?
 解决方案 
Nokia says no:
But sometimes if you're stuck with a flashing effect that's kind of ugly like this, you can intentionally drag it out to make it seem like something "cool" just happened.
Maybe pop up a little progress bar that's not in the window, say "Adjusting Window Properties!"...fade the window out of existence and then back in, and close the progress bar popup.
                        
这篇关于如何在Qt中为QMainWindow切换“始终在顶部”，而不会导致闪烁或闪烁？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！