Determine whether input is COM object property
tf = isprop(h,'propertyname')
tf = isprop(h,'propertyname') returns logical 1 (true)
if the specified name is a property of COM object h. Otherwise,
returns logical 0 (false).
COM functions are available on Microsoft® Windows® systems only.
Test a property of an instance of a Microsoft Excel® application.
h = actxserver('Excel.Application');
isprop(h,'UsableWidth')
MATLAB® returns true, UsableWidth is
a property.
Try the same test on SaveWorkspace.
isprop(h,'SaveWorkspace')
MATLAB returns false. SaveWorkspace is
not a property; it is a method.