去掉标题栏后如何用鼠标来移动窗体？

Question

override WndProc, 响应消息WM_NCHITTEST, 返回HTCAPTION, 具体的值可查SDK头文件

Answer 1

protected override void WndProc(ref Message m)
{
   if (m.Msg == 0x0084)             // WM_NCHITTEST
   {
       m.Result = (IntPtr)0x2;      // HTCAPTION
       return;
   }      base.WndProc(ref m);
}

Answer 2

http://developer.ccidnet.com/pub/disp/Article?columnID=340&articleID=25457&pageNO=1

Answer 3

protected override void OnPaint(PaintEventArgs e)
{
if(y<44)
{
if(flag==2)
{
this.Left=Control.MousePosition.X-x;
this.Top=Control.MousePosition.Y-y;
}
}

}
private void KJ2003WlanClient_MouseMove(object sender, System.Windows.Forms.MouseEventArgs e)
{
{
if(flag==2)
{
x=e.X;
y=e.Y;
}
}
this.Refresh();

}
public int clicknum=0; private void KJ2003WlanClient_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
{
if(clicknum%2==0)
{
x=e.X;
y=e.Y;
flag=2;
clicknum=1;

}
else
{
clicknum=0;
flag=1;
}
this.Refresh();
} private void KJ2003WlanClient_MouseUp(object sender, System.Windows.Forms.MouseEventArgs e)
{
if(clicknum%2==0)
{
x=e.X;
y=e.Y;
flag=2;
clicknum=1;

}
else
{
clicknum=0;
flag=1;
}
this.Refresh();