.NET：如何检查鼠标是否在控制？ [英] .NET: How to check if the mouse is in a control?

问题描述

我想知道，如果鼠标在.NET中一个特定的控制

i want to know if the mouse is in a particular control in .NET

private void panel1_MouseLeave(object sender, EventArgs e)
{
   if (MouseIsInControl((Control)sender)
      return; //the mouse didn't leave, don't fire a MouseLeave event

   ...
}

public Boolean MouseIsInControl(Control control)
{
    //return (control.Bounds.Contains(MousePosition));
    return control.Bounds.Contains(control.PointToClient(MousePosition))
}

但我需要有人来摆弄了四种不同的坐标系，使其工作<一个href="http://stackoverflow.com/questions/347439/custom-controls-in-c-sharp-windows-forms-mouse-event-question">.

• <一个href="http://stackoverflow.com/questions/986529/how-to-detect-if-the-mouse-is-inside-the-whole-form-and-child-controls-in-c">How检测鼠标是否在C＃中的整个窗体和子控件内？（整个表格）
• <一个href="http://stackoverflow.com/questions/347439/custom-controls-in-c-sharp-windows-forms-mouse-event-question">Custom在C＃中的Windows窗体控件的鼠标事件问题（控制标签内）

• How to detect if the mouse is inside the whole form and child controls in C#? (entire form)
• Custom controls in C# Windows Forms mouse event question (control with label inside)

推荐答案

这<一href="http://stackoverflow.com/questions/423728/winform-determine-if-mouse-has-left-user-control/425361#425361">Hans顺便回答可适应做你想要的：

private bool mEntered;
private Timer timer1;

public Form1() {
  InitializeComponent();

  timer1 = new Timer();
  timer1.Interval = 200;
  timer1.Tick += timer1_Tick;
  timer1.Enabled = false;
}

private void panel1_MouseEnter(object sender, EventArgs e) {
  timer1.Enabled = true;
}

private void timer1_Tick(object sender, EventArgs e) {
  bool entered = panel1.ClientRectangle.Contains(panel1.PointToClient(Cursor.Position));
  if (entered != mEntered) {
    mEntered = entered;
    if (!entered) {
      timer1.Enabled = false;
      // OK, Do something, the mouse left the parent container
    }
  }
}

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