Returns the value of the property specified by the dispIdMember.
@param dispIdMember the ID of the property as specified by the IDL of the ActiveX Control; the
value for the ID can be obtained using OleAutomation.getIDsOfNames
@return the value of the property specified by the dispIdMember or null
Returns the value of the property specified by the dispIdMember.
@param dispIdMember the ID of the property as specified by the IDL of the ActiveX Control; the value for the ID can be obtained using OleAutomation.getIDsOfNames
@return the value of the property specified by the dispIdMember or null