将标题栏隐藏后，如何使用鼠标拖动窗体？

Question

可以在mouse_down事件中发送WM_NCLBUTTONDOWN来实现你要的效果,可以参考下面的代码.using System.Runtime.InteropServices;
............
public const int WM_NCLBUTTONDOWN = 0xA1;
public const int HTCAPTION = 0x2;[DllImportAttribute ("user32.dll")]
public static extern int SendMessage(IntPtr hWnd, int Msg, int wParam, int lParam);[DllImportAttribute ("user32.dll")]
public static extern bool ReleaseCapture();private void Form2_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
{
ReleaseCapture();
SendMessage(Handle, WM_NCLBUTTONDOWN, HTCAPTION, 0);
}

Answer 1

private void frmLogin_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
{
this.Cursor=Cursors.SizeAll;
p= new Point(e.X,e.Y);
p=this.PointToScreen(p);
} private void frmLogin_MouseUp(object sender, System.Windows.Forms.MouseEventArgs e)
{
this.Cursor= Cursors.Default;
} private void frmLogin_MouseMove(object sender, System.Windows.Forms.MouseEventArgs e)
{
if(e.Button==MouseButtons.Left)
{
Point tp= new Point(e.X,e.Y);
tp= this.PointToScreen(tp);
this.Top += tp.Y -p.Y;
this.Left += tp.X-p.X;
this.p=tp;
}
}

Answer 2

http://expert.csdn.net/Expert/TopicView1.asp?id=2205855

Answer 3

重载消息处理函数
当程序受到(WM_NCHITTEST)的时候，改变消息的处理结果返回给系统
就是欺骗windows让他以为鼠标点到了表题栏上，这行就可以托动了protected override void WndProc(ref Message msg)
     {
          if (msg.Msg == 0x0084)             // WM_NCHITTEST
               msg.Result = (IntPtr) 2;      // HTCAPTION
          else
               base.WndProc(ref msg);
     }
来源:
http://groups.google.com/groups?hl=zh-CN&lr=&ie=UTF-8&oe=UTF-8&threadm=_D3p8.73158%24in3.22907252%40typhoon.nyc.rr.com&rnum=1&prev=/groups%3Fq%3D(msg.Msg%2B%253D%253D%2B0x0084%26hl%3Dzh-CN%26lr%3D%26ie%3DUTF-8%26oe%3DUTF-8%26selm%3D_D3p8.73158%2524in3.22907252%2540typhoon.nyc.rr.com%26rnum%3D1

Answer 4

谢谢各位， chenxy2002((HomeMan) 的
p=this.PointToScreen(p);
正是我想要得，其余大侠的方法太高深了，待我研究研究。