winform 设置移动窗体

  
    

   
     private
   
      Point mouseOffset;
 
   
     private
   
      
   
     bool
   
      isMouseDown 
   
     =
   
      
   
     false
   
     ;
 
   
     public
   
      Form1()
 {
 InitializeComponent();
 }

 

 
   
     private
   
      
   
     void
   
      button2_Click(
   
     object
   
      sender, EventArgs e)
 {
 Close();
 }

 
   
     private
   
      
   
     void
   
      Form1_MouseDown(
   
     object
   
      sender, MouseEventArgs e)
 {
 
   
     int
   
      yOffset, xOffset;
 
   
     if
   
      (e.Button 
   
     ==
   
      System.Windows.Forms.MouseButtons.Left)
 {
 xOffset 
   
     =
   
      
   
     -
   
     e.X 
   
     -
   
      SystemInformation.FrameBorderSize.Width;
 yOffset 
   
     =
   
      
   
     -
   
     e.Y 
   
     -
   
      SystemInformation.CaptionHeight 
   
     -
   
      SystemInformation.FrameBorderSize.Height;
 mouseOffset 
   
     =
   
      
   
     new
   
      Point(xOffset, yOffset);
 isMouseDown 
   
     =
   
      
   
     true
   
     ;
 }
 }

 
   
     private
   
      
   
     void
   
      Form1_MouseUp(
   
     object
   
      sender, MouseEventArgs e)
 {
 
   
     if
   
     (e.Button 
   
     ==
   
      System.Windows.Forms.MouseButtons.Left)
 {
 isMouseDown 
   
     =
   
      
   
     false
   
     ;
 }
 }

 
   
     private
   
      
   
     void
   
      Form1_MouseMove(
   
     object
   
      sender, MouseEventArgs e)
 {
 
   
     if
   
      (isMouseDown)
 {
 Point p 
   
     =
   
      Control.MousePosition;
 p.Offset(mouseOffset.X,mouseOffset.Y);
 Location 
   
     =
   
      p;
 }
 }
 }