External Interfaces

Identifying Objects and Interfaces

You can get some additional information about a control or server using the following functions.

Function	Description
class	Return the class of an object
isa	Determine if an object is of a given MATLAB class
iscom	Determine if the input is a COM or ActiveX object
isinterface	Determine if the input is a COM interface

This example creates a COM object in an Automation server running Excel, giving it the handle h, and a Workbooks interface to the object, with handle w.

• h = actxserver('excel.application');
  w = h.Workbooks;
  

Use the iscom function to see if variable h is a handle to a COM or ActiveX object:

• h.iscom
  ans =
       1
  

Use the isa function to test variable h against a known class name:

• h.isa('COM.excel.application')
  ans =
       1
  

Use isinterface to see if variable w is a handle to a COM interface:

• w.isinterface
  ans =
       1
  

Use the class function to find out the class of variable w:

• w.class
  ans =
     Interface.Microsoft_Excel_9.0_Object_Library.Workbooks
  

Invoking Commands on a COM Object

Invoking Methods

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