static void setAlpha( GC gc, ColorDefinition cd )
static void setAlpha( GC gc, int value )
	static void setAlpha( GC gc, ColorDefinition cd )	{		if ( R31_AVAILABLE )		{			if ( cd != null && cd.isSetTransparency( ) )			{				setAlpha( gc, cd.getTransparency( ) );			}			else			{				setAlpha( gc, 255 );			}		}	}