控件操作小结

1.控件的拖动：
以System.Windows.Forms.Panel控件为例：

声明变量：       
   Point mouse_offset;

    MouseDown事件：
 

1    private void panel1_MouseDown(object sender, MouseEventArgs e)
2         {
3             mouse_offset = new Point(-e.X, -e.Y);
4         }
5 

   MouseMove事件：

 1         private void panel1_MouseMove(object sender, MouseEventArgs e)
 2         {
 3             ((Control)sender).Cursor = Cursors.Arrow;
 4             if (e.Button == MouseButtons.Left)
 5             {
 6                 Point mousePos = Control.MousePosition;
 7                 mousePos.Offset(mouse_offset.X, mouse_offset.Y);
 8                 ((Control)sender).Location = ((Control)sender).Parent.PointToClient(mousePos);
 9             }
10         }

2.控件的隐藏：
  （1）关闭按钮（用System.Windows.Forms.Panel控件做按钮，通过panel3,panel7的MouseClick事件来关闭panel1）:
         由MouseEnter，MouseLeave和MouseClick三个事件完成：

 1         private void panel3_MouseEnter(object sender, EventArgs e)
 2         {
 3             this.panel3.BackgroundImage = Image.FromFile("delete1.jpg");
 4         }
 5 
 6         private void panel3_MouseLeave(object sender, EventArgs e)
 7         {
 8             this.panel3.BackgroundImage = Image.FromFile("delete.jpg");
 9         }
10 
11         private void panel3_MouseClick(object sender, MouseEventArgs e)
12         {
13             this.panel1.Hide();
14             this.panel7.BackgroundImage = Image.FromFile("cameracontroldown.jpg");
15         }

   

 1   private void panel7_MouseClick(object sender, MouseEventArgs e)
 2         {
 3             if (this.panel1.Visible == true)
 4             {
 5                 this.panel1.Hide();
 6                 this.panel7.BackgroundImage = Image.FromFile("cameracontroldown.jpg");
 7             }
 8             else
 9             {
10                 this.panel1.Show();
11                 this.panel7.BackgroundImage = Image.FromFile("cameracontrolup.jpg");
12             }
13         }
14 

(2)动态隐藏：

 1        private void treemaphide()
 2         {
 3 
 4             while (this.TempPoint.Y < treehight)
 5             {
 6                 System.Threading.Thread.Sleep(10);
 7                 TempPoint.Y = this.controlPanel.Location.Y + 80;
 8                 TempPoint.X = this.controlPanel.Location.X;
 9                 this.controlPanel.Location = TempPoint;
10 
11                 TempPoint1 = this.panel2.Location;
12                 TempPoint1.Y = TempPoint1.Y +80;
13                 this.panel2.Location = TempPoint1;
14 
15                
16             }
17             this.controlPanel.Hide();
18             this.panel2.Hide();
19         }
20 
21         private void treemapshow()
22         {
23             this.controlPanel.Show();
24             this.panel2.Show();
25             while (this.TempPoint.Y > 58+80)
26             {
27                 System.Threading.Thread.Sleep(10);
28                 TempPoint.Y = this.controlPanel.Location.Y - 80;
29                 TempPoint.X = this.controlPanel.Location.X;
30                 this.controlPanel.Location = TempPoint;
31 
32                 TempPoint1 = this.panel2.Location;
33                 TempPoint1.Y = TempPoint1.Y - 80;
34                 this.panel2.Location = TempPoint1;
35 
36             }
37             this.TempPoint.Y = 58;
38             this.controlPanel.Location = this.TempPoint;
39             this.TempPoint1.Y = 42;
40             this.panel2.Location = this.TempPoint1;
41         }

 1     private void panel6_MouseClick(object sender, MouseEventArgs e)
 2         {
 3 
 4             if (this.controlPanel.Visible == true)
 5             {
 6               
 7                 treemaphide();
 8                 this.panel6.BackgroundImage = Image.FromFile("stationtreedown.jpg");
 9                 
10             }
11             else
12             {
13                
14                 treemapshow();
15                 this.panel6.BackgroundImage = Image.FromFile("stationtreeup.jpg");
16                 
17             }
18         }