Winfrom窗体在去掉窗体边框的情况下使鼠标移动窗体

1添加鼠标移动上去事件

扑捉新的坐标

Point downPoint;（提供有序的 x 坐标和 y 坐标整数对，该坐标对在二维平面中定义一个点。）

private void FrmLogin_MouseMove(object sender, MouseEventArgs e)

{

if (e.Button == MouseButtons.Left)

{

this.Location = new Point(this.Location.X + e.X - downPoint.X,

this.Location.Y + e.Y - downPoint.Y);

}

}

2添加按下鼠标事件

private void FrmLogin_MouseDown(object sender, MouseEventArgs e)

{

downPoint = new Point(e.X, e.Y);

}