Syntax to Support Inheritance from a .NET Class

PowerScript allows you to create nonvisual objects that override all virtual and abstract methods, properties, indexers, and events defined in .NET base classes and interfaces.

This example defines a PowerScript nonvisual object that inherits from a .NET class:

         global type NVO from DotNetClass1, ISub1
         end type

You can use the same syntax for calling PowerScript functions and events to call the functions and events of a .NET class:

        { objectname.} { type } { calltype } { when } name ( { argumentlist } )

This table describes the arguments used in function or event calls. All arguments except the function or event name are optional.

Argument	Description
`objectname`	The name of the object where the function or event is defined, followed by a period or the descendant of that object, or the name of the ancestor class of the object followed by two colons.
`type`	A keyword specifying the method type you are calling. Values are: FUNCTION (default) EVENT
`calltype`	A keyword specifying when PowerBuilder looks for the function or event. Values are: STATIC (default) DYNAMIC
`when`	A keyword specifying when the function or event should execute. Values are: TRIGGER (default) – execute immediately. POST – put in the object's queue and execute after other pending messages have been handled.
`name`	The name of the function or event to call.
`argumentlist`	The values to pass to the function or event. Each value must have a datatype that corresponds to the declared datatype in the function or event definition or declaration.