winform中主窗体可以实现拖动代码

[DllImport("user32.dll")]

public static extern bool ReleaseCapture();

[DllImport("user32.dll")]

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

　　//实现鼠标左键按下拖动

private void Login_MouseDown_1(object sender, MouseEventArgs e) {

if (e.Button == MouseButtons.Left) {

ReleaseCapture();

SendMessage(Handle, 0xA1, 0x02, 0); } }

引入命名空间：using System.Runtime.InteropServices;