void SetFocus(Control control)
{
_focus = control;
Win32.InvalidateRect(Handle, IntPtr.Zero, false);
AutomationInteropProvider.RaiseAutomationEvent(
AutomationElement.AutomationFocusChangedEvent,
this,
new AutomationFocusChangedEventArgs(0, _focus.AutomationPeer.RuntimeID)
);
}
public Control GetSibling(Control from, int delta, bool wrap=false)
{
int index = _controls.IndexOf(from);
if (index < 0)
return null;
index += delta;
if (index < 0)
{
if (wrap)
index = _controls.Count - 1;
else
return null;
}
if (index >= _controls.Count)
{
if (wrap)
index = 0;
else
return null;
}
return _controls[index];
}