点击窗体任意位置移动窗体：

需要添加命名空间：

using System.Runtime.InteropServices;

复制代码 代码如下:

private const int WM_NCLBUTTONDOWN = 0x00A1;

private const int HTCAPTION = 2;

[DllImport("user32.dll", CharSet = CharSet.Unicode)]

public static extern IntPtr SendMessage(IntPtr hwnd, int wMsg, IntPtr wParam, IntPtr lParam);

[DllImport("user32.dll", CharSet = CharSet.Unicode)]

public static extern bool ReleaseCapture();

protected override void OnMouseDown( MouseEventArgs e )

{

base.OnMouseDown( e );

if (e.Button == MouseButtons.Left) // 按下的是鼠标左键

{

ReleaseCapture(); // 释放捕获

SendMessage(this.Handle, WM_NCLBUTTONDOWN, (IntPtr)HTCAPTION, IntPtr.Zero); // 拖动窗体

}

}