ILayerOnDraw 方法

bool OnDraw(
	DrawType eDrawType,
	IDisplay pDisplay,
	IDrawArgs pDrawArgs
)

Function OnDraw ( 
	eDrawType As DrawType,
	pDisplay As IDisplay,
	pDrawArgs As IDrawArgs
) As Boolean

bool OnDraw(
	DrawType eDrawType, 
	IDisplay^ pDisplay, 
	IDrawArgs^ pDrawArgs
)

abstract OnDraw : 
        eDrawType : DrawType * 
        pDisplay : IDisplay * 
        pDrawArgs : IDrawArgs -> bool