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鼠标拖动窗体

Posted on 2006-11-20 08:52  sunrack  阅读(190)  评论(0编辑  收藏  举报

 

 1//记录鼠标指针的坐标  
 2private Point mouseOffset;
 3
 4//记录鼠标按键是否按下    
 5private bool isMouseDown = false

 6
 7private void Form1_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
 8        {
 9            int xOffset;
10            int yOffset;
11  
12            if (e.Button == MouseButtons.Left)
13            {
14                xOffset = -e.X - SystemInformation.FrameBorderSize.Width;
15  
16                yOffset = -e.Y - SystemInformation.CaptionHeight -
17  
18                    SystemInformation.FrameBorderSize.Height;
19  
20                mouseOffset = new Point(xOffset, yOffset);
21  
22                isMouseDown = true;
23            }

24        }

25
26        private void Form1_MouseMove(object sender, System.Windows.Forms.MouseEventArgs e)
27        {
28            if (isMouseDown)
29            {
30                Point mousePos = Control.MousePosition;
31                mousePos.Offset(mouseOffset.X, mouseOffset.Y);
32                Location = mousePos;
33            }

34        }

35
36        private void Form1_MouseUp(object sender, System.Windows.Forms.MouseEventArgs e)
37        {
38            // 修改鼠标状态isMouseDown的值
39            // 确保只有鼠标左键按下并移动时,才移动窗体
40            if (e.Button == MouseButtons.Left)
41            {
42                isMouseDown = false;
43            }

44        }