C#winform实现界面拖动

本方法为调用API的形式实现

代码如下：

[System.Runtime.InteropServices.DllImport("user32.dll")]
public static extern bool ReleaseCapture();
[System.Runtime.InteropServices.DllImport("user32.dll")]
public static extern bool SendMessage(IntPtr hwnd, int wMsg, int wParam, int lParam);
public const int WM_SYSCOMMAND = 0x0112;
public const int SC_MOVE = 0xF010;
public const int HTCAPTION = 0x0002;
private void Form1_MouseDown(object sender, MouseEventArgs e)
{
try
{
ReleaseCapture();
SendMessage(this.Handle, WM_SYSCOMMAND, SC_MOVE + HTCAPTION, 0);
}
catch

{ }
}