powerbuilder online courses - by prasad bodepudi user objects visual user objects class user objects...

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User ObjectsUser Objects Visual User Objects

Class User Objects (Non-visual User Objects)

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User ObjectsUser Objects

Visual User ObjectsStandardCustomExternalVBX




Standard Visual User ObjectsIncludes all window controls.All events that are available at the standard

window control are available in this user object.

Can be placed in another custom visual user object or on a window.




Custom Visual User ObjectsAny window control including standard/ custom/

external visual uo can be placed on this type of user object.

Can be placed in another custom visual user object or on a window.

Has only constructor, destructor, drag-n-drop events along with rMouseButton and other events.




External Visual User ObjectsAllows you to use third-party controls in

PowerBuilder.All events that are available for custom

visual user objects are available are available.




VBX Visual User ObjectsAllows you to use VBX (Visual Basic)

controls in PowerBuilder.VBX controls are supported only till v4.0.From v5.0, you can’t create a new VBX user

object, however, you can migrate v4.0 applications that are using VBX user objects.


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Class User Objects (Non-visual uo) StandardCustomC++




Standard Class User ObjectsAllows you to create user objects that are

inherited from standard classes such as Error, Transaction, etc...

Useful you to extend the functionality of standard classes.




Custom Class User ObjectsAllows you to create user objects and put

business logic.You can auto-instantiate these user

objects.Does not have any events other than

constructor and destructor.




C++ Class User ObjectsAllows you to write the business logic in C++ and

use those classes in PowerBuilder.Good when the business logic includes a lot of

arithmetical calculations and iterations.The speed benefits are narrowed once

PowerBuilder started creating machine code executables from v5.0.


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