internal virtual bool IsOffscreen()
{
Rect itemRect = BoundingRectangle;
if (itemRect.IsEmpty)
{
return(true);
}
// As per the specs, IsOffscreen only takes immediate parent-child relationship into account,
// so we only need to check if this item in offscreen with respect to its immediate parent.
ProxySimple parent = GetParent();
if (parent != null)
{
if ((bool)parent.GetElementProperty(AutomationElement.IsOffscreenProperty))
{
return(true);
}
// Now check to see if this item in visible on its parent
Rect parentRect = parent.BoundingRectangle;
if (!parentRect.IsEmpty && !Misc.IsItemVisible(ref parentRect, ref itemRect))
{
return(true);
}
}
// if this element is not on any monitor than it is off the screen.
NativeMethods.Win32Rect itemWin32Rect = new NativeMethods.Win32Rect(itemRect);
return(UnsafeNativeMethods.MonitorFromRect(ref itemWin32Rect, UnsafeNativeMethods.MONITOR_DEFAULTTONULL) == IntPtr.Zero);
}