void GetViewport(
	out short left,
	out short bottom,
	out short width,
	out short height
)

Sub GetViewport ( 
	<OutAttribute> ByRef left As Short,
	<OutAttribute> ByRef bottom As Short,
	<OutAttribute> ByRef width As Short,
	<OutAttribute> ByRef height As Short
)

void GetViewport(
	[OutAttribute] short% left, 
	[OutAttribute] short% bottom, 
	[OutAttribute] short% width, 
	[OutAttribute] short% height
)

abstract GetViewport : 
        left : int16 byref * 
        bottom : int16 byref * 
        width : int16 byref * 
        height : int16 byref -> unit