public virtual bool OnPreRender(
	RenderArea renderArea,
	out bool clearWindow,
	out bool clearZbuffer
)

Public Overridable Function OnPreRender ( 
	renderArea As RenderArea,
	<OutAttribute> ByRef clearWindow As Boolean,
	<OutAttribute> ByRef clearZbuffer As Boolean
) As Boolean

public:
virtual bool OnPreRender(
	RenderArea^ renderArea, 
	[OutAttribute] bool% clearWindow, 
	[OutAttribute] bool% clearZbuffer
)

abstract OnPreRender : 
        renderArea : RenderArea * 
        clearWindow : bool byref * 
        clearZbuffer : bool byref -> bool 
override OnPreRender : 
        renderArea : RenderArea * 
        clearWindow : bool byref * 
        clearZbuffer : bool byref -> bool