方法一：
1 2015-07-11 16:05:35
2 bool formMove = false;//窗体是否移动
3 Point formPoint;//记录窗体的位置
4 private void Form1_MouseDown(object sender, MouseEventArgs e)
5 {
6 formPoint = new Point();
7 int xOffset;
8 int yOffset;
9 if (e.Button == MouseButtons.Left)
10 {
11 xOffset = -e.X;
12 yOffset = -e.Y;
13 formPoint = new Point(xOffset, yOffset);
14 formMove = true;//开始移动
15 }
16 }
17
18 private void Form1_MouseMove(object sender, MouseEventArgs e)
19 {
20 if (formMove == true)
21 {
22 Point mousePos = Control.MousePosition;
23 mousePos.Offset(formPoint.X, formPoint.Y);
24 Location = mousePos;
25 }
26 }
27
28 private void Form1_MouseUp(object sender, MouseEventArgs e)
29 {
30 if (e.Button == MouseButtons.Left)//按下的是鼠标左键
31 {
32 formMove = false;//停止移动
33 }
34 }
方法二：
1 Point mouseOff;//鼠标移动位置变量
2 bool leftFlag;//标签是否为左键
3 private void Login_MouseDown(object sender, MouseEventArgs e)
4 {
5 if (e.Button == MouseButtons.Left)
6 {
7 mouseOff = new Point(-e.X, -e.Y); //得到变量的值
8 leftFlag = true; //点击左键按下时标注为true;
9 }
10 }
11
12 private void Login_MouseMove(object sender, MouseEventArgs e)
13 {
14 if (leftFlag)
15 {
16 Point mouseSet = Control.MousePosition;
17 mouseSet.Offset(mouseOff.X, mouseOff.Y); //设置移动后的位置
18 Location = mouseSet;
19 }
20 }
21
22 private void Login_MouseUp(object sender, MouseEventArgs e)
23 {
24 if (leftFlag)
25 {
26 leftFlag = false;//释放鼠标后标注为false;
27 }
28 }
