Method OnTextLostFocus

UnitTests/UnitTest_HyperTextBox/HyperTextBox.cpp:485–490

	}

	void HyperTextBox::OnTextLostFocus(Widget* _sender, Widget* _new)
	{
		size_t count = _sender->getChildCount();
		if (count > 0)
			_sender->getChildAt(0)->setVisible(false);
	}

	void HyperTextBox::OnTextSetFocus(Widget* _sender, Widget* _old)
	{