Determines if an object supports a particular method
(vlax-method-applicable-p obj method)
Arguments
A VLA-object.
A symbol or string containing the name of the method to be checked.
Return Values
T, if the object supports the method; otherwise nil.
Examples
The following commands are issued against a LightweightPolyline object:
(vlax-method-applicable-p WhatsMyLine 'copy) T (vlax-method-applicable-p WhatsMyLine 'AddBox) nil