protected override void OnGotKeyboardFocus(KeyboardFocusChangedEventArgs e)
{
if (this != Keyboard.FocusedElement)
{
base.OnGotKeyboardFocus(e);
return;
}
// If there is no other child element getting focused as the focus
// returned to the main window, then we need to explicitly set the
// focus back onto the text canvas (or the start-up page, whichever
// is currently on top).
if (null != textEditorControl)
{
textEditorControl.SetFocusOnForegroundContent();
}
}