void DockingExample::ChangeStyle()
{
	TabCtrl::Style& ctrlTabBarStyle = DockTabBar::StyleDefault().Write();
	ctrlTabBarStyle.Standard();
	for(int i = 0; i < 4; i++)
	{
		ctrlTabBarStyle.text_color[i] = White();
	}
}

button <<= THISBACK(OnUserGuide);	

button <<= THISBACK(ChangeStyle);

tabbar.SetStyle(tabbar.GetAlign(), DockTabBar::StyleDefault());