User`s guide

Processing varargin and varargout Arguments
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Processing varargin and varargout Arguments
When varargin and/or varargout are present in the original MATLAB
function, these parameters are added to the argument list of the class method
as the last input/output parameters in the list. You can pass multiple
arguments as a
varargin array by creating a Variant array, assigning each
element of the array to the respective input argument.
The following example creates a
varargin array to call a method resulting from
a MATLAB function of the form
y = foo(varargin).
Function foo(x1 As Variant, x2 As Variant, x3 As Varaint, _
x4 As Variant, x5 As Variant) As Variant
Dim aClass As Object
Dim v(1 To 5) As Variant
Dim y As Variant
On Error Goto Handle_Error
v(1) = x1
v(2) = x2
v(3) = x3
v(4) = x4
v(5) = x5
aClass = CreateObject("mycomponent.myclass.1_0")
Call aClass.foo(1,y,v)
foo = y
Exit Function
Handle_Error:
foo = Err.Description
End Function
The MWUtil class included in the MWComUtil utility library provides the MWPack
helper function to create
varargin parameters. See Appendix D, “Utility
Library” for more details.
The next example processes a
varargout parameter into three separate Excel
Ranges. This function makes use of the MWUnpack function in the utility library.
The MATLAB function used is
varargout = foo(x1,x2).
Sub foo(Rout1 As Range, Rout2 As Range, Rout3 As Range, _
Rin1 As Range, Rin2 As Range)
Dim aClass As Object