protected override void WndProc(ref Message message)
{
base.WndProc(ref message);
if (message.Msg == 0x84) // WM_NCHITTEST
{
var cursor = this.PointToClient(Cursor.Position);
if (TopLeftRect.Contains(cursor))
{
message.Result = (IntPtr)HTTOPLEFT;
}
else if (TopRightRect.Contains(cursor))
{
message.Result = (IntPtr)HTTOPRIGHT;
}
else if (BottomLeftRect.Contains(cursor))
{
message.Result = (IntPtr)HTBOTTOMLEFT;
}
else if (BottomRightRect.Contains(cursor))
{
message.Result = (IntPtr)HTBOTTOMRIGHT;
}
else if (TopRect.Contains(cursor))
{
message.Result = (IntPtr)HTTOP;
}
else if (LeftRect.Contains(cursor))
{
message.Result = (IntPtr)HTLEFT;
}
else if (RightRect.Contains(cursor))
{
message.Result = (IntPtr)HTRIGHT;
}
else if (BottomRect.Contains(cursor))
{
message.Result = (IntPtr)HTBOTTOM;
}
}
}
private bool WmNcHitTest(ref Message m)
{
int para = m.LParam.ToInt32();
int x0 = WinAPI.LOWORD(para);
int y0 = WinAPI.HIWORD(para);
Point p = PointToClient(new Point(x0, y0));
if (Resizable)
{
if (TopLeftRect.Contains(p))
{
m.Result = new IntPtr((int)WinAPI.NCHITTEST.HTTOPLEFT);
return(true);
}
if (TopRect.Contains(p))
{
m.Result = new IntPtr((int)WinAPI.NCHITTEST.HTTOP);
return(true);
}
if (TopRightRect.Contains(p))
{
m.Result = new IntPtr((int)WinAPI.NCHITTEST.HTTOPRIGHT);
return(true);
}
if (LeftRect.Contains(p))
{
m.Result = new IntPtr((int)WinAPI.NCHITTEST.HTLEFT);
return(true);
}
if (RightRect.Contains(p))
{
m.Result = new IntPtr((int)WinAPI.NCHITTEST.HTRIGHT);
return(true);
}
if (BottomLeftRect.Contains(p))
{
m.Result = new IntPtr((int)WinAPI.NCHITTEST.HTBOTTOMLEFT);
return(true);
}
if (BottomRect.Contains(p))
{
m.Result = new IntPtr((int)WinAPI.NCHITTEST.HTBOTTOM);
return(true);
}
if (BottomRightRect.Contains(p))
{
m.Result = new IntPtr((int)WinAPI.NCHITTEST.HTBOTTOMRIGHT);
return(true);
}
}
if (IconRect.Contains(p))
{
m.Result = new IntPtr((int)WinAPI.NCHITTEST.HTSYSMENU);
return(true);
}
if (CloseBoxRect.Contains(p) || MaxBoxRect.Contains(p) || MinBoxRect.Contains(p))
{
m.Result = new IntPtr((int)WinAPI.NCHITTEST.HTCLIENT);
return(true);
}
if (IsMdiContainer && _mdiBarController != null)
{
if (_mdiBarController.HitTestBounds.Contains(p))
{
m.Result = new IntPtr((int)WinAPI.NCHITTEST.HTCLIENT);
return(true);
}
}
if (CaptionRect.Contains(p))
{
m.Result = new IntPtr((int)WinAPI.NCHITTEST.HTCAPTION);
return(true);
}
m.Result = new IntPtr((int)WinAPI.NCHITTEST.HTCLIENT);
return(true);
}
private void WmNcHitTest(ref Message m)
{
int para = m.LParam.ToInt32();
int x0 = WinAPI.LOWORD(para);
int y0 = WinAPI.HIWORD(para);
Point p = PointToClient(new Point(x0, y0));
if (UseShadowToResize)
{
if (TopLeftRect.Contains(p))
{
m.Result = new IntPtr((int)WinAPI.NCHITTEST.HTTOPLEFT);
return;
}
if (TopRect.Contains(p))
{
m.Result = new IntPtr((int)WinAPI.NCHITTEST.HTTOP);
return;
}
if (TopRightRect.Contains(p))
{
m.Result = new IntPtr((int)WinAPI.NCHITTEST.HTTOPRIGHT);
return;
}
if (LeftRect.Contains(p))
{
m.Result = new IntPtr((int)WinAPI.NCHITTEST.HTLEFT);
return;
}
if (RightRect.Contains(p))
{
m.Result = new IntPtr((int)WinAPI.NCHITTEST.HTRIGHT);
return;
}
if (BottomLeftRect.Contains(p))
{
m.Result = new IntPtr((int)WinAPI.NCHITTEST.HTBOTTOMLEFT);
return;
}
if (BottomRect.Contains(p))
{
m.Result = new IntPtr((int)WinAPI.NCHITTEST.HTBOTTOM);
return;
}
if (BottomRightRect.Contains(p))
{
m.Result = new IntPtr((int)WinAPI.NCHITTEST.HTBOTTOMRIGHT);
return;
}
}
m.Result = new IntPtr((int)WinAPI.NCHITTEST.HTCLIENT);
return;
}