public void GetGroupExtent(
	string group_name,
	ref double xmin,
	ref double ymin,
	ref double xmax,
	ref double ymax,
	int unit
)

Public Sub GetGroupExtent ( 
	group_name As String,
	ByRef xmin As Double,
	ByRef ymin As Double,
	ByRef xmax As Double,
	ByRef ymax As Double,
	unit As Integer
)

public:
void GetGroupExtent(
	String^ group_name, 
	double% xmin, 
	double% ymin, 
	double% xmax, 
	double% ymax, 
	int unit
)

member GetGroupExtent : 
        group_name : string * 
        xmin : float byref * 
        ymin : float byref * 
        xmax : float byref * 
        ymax : float byref * 
        unit : int -> unit