C#WinForm无边框窗体移动----模仿鼠标单击标题栏移动窗体位置

2022-08-19 13:01:13

C#WinForm无边框窗体移动方法、模仿鼠标单击标题栏移动窗体位置

这里介绍俩种办法

方法一：直接通过修改窗体位置从而达到移动窗体的效果

方法二：直接伪装发送单击任务栏消息，让应用程序误以为单击任务栏从而移动窗体

新建窗体用于测试

方法一

1.定义一个位置信息Point用于存储鼠标位置

1         private Point mPoint;

2.给窗体等控件增加MouseDown和MouseMove事件

 1         /// <summary>
 2         /// 鼠标按下
 3         /// </summary>
 4         /// <param name="sender"></param>
 5         /// <param name="e"></param>
 6         private void panel1_MouseDown(object sender, MouseEventArgs e)
 7         {
 8             mPoint = new Point(e.X, e.Y);
 9         }
10 
11         /// <summary>
12         /// 鼠标移动
13         /// </summary>
14         /// <param name="sender"></param>
15         /// <param name="e"></param>
16         private void panel1_MouseMove(object sender, MouseEventArgs e)
17         {
18             if (e.Button == MouseButtons.Left)
19             {
20                 this.Location = new Point(this.Location.X + e.X - mPoint.X, this.Location.Y + e.Y - mPoint.Y);
21             }
22         }

方法二：

1.引入下面代码前提需要引入命名空间using System.Runtime.InteropServices

1         [DllImport("user32.dll")]
2         public static extern bool ReleaseCapture();
3 
4         [DllImport("user32.dll")]
5         public static extern bool SendMessage(IntPtr hwnd, int wMsg, int wParam, int lParam);
6 
7         private const int VM_NCLBUTTONDOWN = 0XA1;//定义鼠标左键按下
8         private const int HTCAPTION = 2;

2.增加鼠标按下事件发送消息，让系统误以为按下是标题栏

 1         /// <summary>
 2         /// 鼠标按下
 3         /// </summary>
 4         /// <param name="sender"></param>
 5         /// <param name="e"></param>
 6         private void panel1_MouseDown(object sender, MouseEventArgs e)
 7         {
 8             //为当前应用程序释放鼠标捕获
 9             ReleaseCapture();
10             //发送消息 让系统误以为在标题栏上按下鼠标
11             SendMessage((IntPtr)this.Handle, VM_NCLBUTTONDOWN, HTCAPTION, 0);
12         }