Transcript User Objects - Hyderabad Colleges

User Objects
 Visual User Objects
 Class User Objects (Non-visual User Objects)
PowerBuilder Online Courses - by Prasad Bodepudi
User Objects
 Visual User Objects
Standard
Custom
External
VBX
PowerBuilder Online Courses
Http://www.applied-software.com
© Prasad Bodepudi. All rights reserved.
User Objects
 Standard Visual User Objects
Includes 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.
PowerBuilder Online Courses
Http://www.applied-software.com
© Prasad Bodepudi. All rights reserved.
User Objects
 Custom Visual User Objects
Any 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.
PowerBuilder Online Courses
Http://www.applied-software.com
© Prasad Bodepudi. All rights reserved.
User Objects
 External Visual User Objects
Allows you to use third-party controls in
PowerBuilder.
All events that are available for custom
visual user objects are available are
available.
PowerBuilder Online Courses
Http://www.applied-software.com
© Prasad Bodepudi. All rights reserved.
User Objects
 VBX Visual User Objects
Allows 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.
PowerBuilder Online Courses
Http://www.applied-software.com
© Prasad Bodepudi. All rights reserved.
User Objects
 Visual User Objects
 Class User Objects (Non-visual User Objects)
PowerBuilder Online Courses - by Prasad Bodepudi
User Objects
 Class User Objects (Non-visual uo)
Standard
Custom
C++
PowerBuilder Online Courses
Http://www.applied-software.com
© Prasad Bodepudi. All rights reserved.
User Objects
 Standard Class User Objects
Allows 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.
PowerBuilder Online Courses
Http://www.applied-software.com
© Prasad Bodepudi. All rights reserved.
User Objects
 Custom Class User Objects
Allows 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.
PowerBuilder Online Courses
Http://www.applied-software.com
© Prasad Bodepudi. All rights reserved.
User Objects
 C++ Class User Objects
Allows 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.
PowerBuilder Online Courses
Http://www.applied-software.com
© Prasad Bodepudi. All rights reserved.
User Objects
 Visual User Objects
 Class User Objects (Non-visual User Objects)
Questions/Comments? Drop an e-mail at [email protected]
The End
PowerBuilder Online Courses - by Prasad Bodepudi