// Returns a Proxy element corresponding to the specified screen coordinates.
internal override ProxySimple ElementProviderFromPoint(int x, int y)
{
NativeMethods.HDHITTESTINFO HitTestInfo = new NativeMethods.HDHITTESTINFO();
HitTestInfo.pt = new NativeMethods.Win32Point(x, y);
int index = -1;
if (Misc.MapWindowPoints(IntPtr.Zero, _hwnd, ref HitTestInfo.pt, 1))
{
unsafe
{
index = XSendMessage.XSendGetIndex(_hwnd, NativeMethods.HDM_HITTEST, IntPtr.Zero, new IntPtr(&HitTestInfo), Marshal.SizeOf(HitTestInfo.GetType()));
}
}
// make sure that hit-test happened on the header item itself
if (index != -1 && (NativeMethods.HHT_ONHEADER == (HitTestInfo.flags & 0x000F)))
{
return(CreateHeaderItem(GetItemFromIndex(index)));
}
return(this);
}
