将普通ProgressBar放置在ToolStripProgressBar的确切位置

我不知道为什么要放置一个控件来覆盖现有的ToolStripProgressBar，但幸运的是，实现这样的事情很简单。您可以通过ProgressBar属性访问托管的ProgressBar，正确使用PointToScreen方法获取ProgressBar的屏幕坐标位置，然后将该位置转换为表单坐标版本，并将其用于另一个ProgressBar。请注意，您在外部使用的ProgressBar应该将Parent设置为您的表单：

public Form1(){
  InitializeComponent();
  //handle the Shown event of your form to ensure
  //your toolStripProgressBar1 has been rendered correctly with correct location
  Shown += (s,e) => {
    //suppose you have a progressbar called progressBar1
    progressBar1.Location = PointToClient(toolStripProgressBar1.ProgressBar
                                               .PointToScreen(Point.Empty));
    //do this to cover the whole existing toolStripProgressBar1 exactly
    progressBar1.Size = toolStripProgressBar1.ProgressBar.Size;
    //call this to ensure your progressBar1 lies on top of all other controls of 
    //your form (of course your statusStrip should be a control of your form)
    progressBar1.BringToFront();
  }; 
  //We should also handle the SizeChanged event of the form
  //because when resizing, the location of the toolStripProgressBar (relatively
  // to the form) will change
  SizeChanged += (s, e) => {
    progressBar1.Location = PointToClient(toolStripProgressBar1.ProgressBar
                                                .PointToScreen(Point.Empty));
  };
}