窗体移动API

//窗体移动API

[DllImport("user32.dll")]

public static extern bool ReleaseCapture();

[DllImport("user32.dll")]

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

public const int WM_SYSCOMMAND = 0x0112;

public const int SC_MOVE = 0xF010;

public const int HTCAPTION = 0x0002;

[DllImport("user32")]

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

private const int WM_SETREDRAW = 0xB;

private void Form1_MouseDown(object sender, MouseEventArgs e)

{

    if (this.WindowState == FormWindowState.Normal)

    {

        ReleaseCapture();

        SendMessage(this.Handle, WM_SYSCOMMAND, SC_MOVE + HTCAPTION, );

    }

}