c# WinForm 中鼠标控制窗体的移动

 

初步找到两个方法

方法１：这种方法还没有尝试过

private const int wm_nchittest = 0x84;
        private const int htclient = 0x1;
        private const int htcaption = 0x2;
        protected override void WndProc(ref System.Windows.Forms.Message m)
        {
            switch (m.Msg)
            {
                case wm_nchittest:
                    base.WndProc(ref m);
                    if ((int)m.Result == htclient)
                        m.Result = (IntPtr)htcaption;
                    return;
            }
            base.WndProc(ref m);
        }

方法２：已经试过很多次，感觉比较通俗易懂^_^

private Point mouse_offset = new Point(0,0);

private void Form1_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
{
            this.mouse_offset = new Point(-e.X,-e.Y);
}

private void Form1_MouseMove(object sender, System.Windows.Forms.MouseEventArgs e)
{
            if(e.Button == MouseButtons.Left)
           {
                 Point mousepos = Control.MousePosition;
                 mousepos.Offset(this.mouse_offset.X,this.mouse_offset.Y-SystemInformation.CaptionHeight);
                 this.Location = mousepos;
           }
}