Specifying default global objects
PowerBuilder provides five built-in global objects that are
predefined in all applications.
|
Global object |
Description |
|---|---|
|
SQLCA |
Transaction object, used to communicate with your |
|
SQLDA |
DynamicDescriptionArea, used in dynamic |
|
SQLSA |
DynamicStagingArea, used in dynamic |
|
Error |
Used to report errors during |
|
Message |
Used to process messages that are not |
You can create your own versions of these objects by creating a
standard class user object inherited from one of the built-in global
objects. You can add instance variables and functions to enhance the
behavior of the global objects.
For more information, see Working with
User Objects.
After you do this, you can specify that you want to use your
version of the object in your application as the default, instead of
the built-in version.
To specify the default global objects
-
In the Properties view, click Additional Properties and
select the Variable Types tab.The Variable Types property page displays.
-
Specify the standard class user object you defined in the
corresponding field.For example, if you defined a user object named mytrans that
is inherited from the built-in Transaction object, type mytrans in
the box corresponding to SQLCA.
-
Click OK.
When you run your application, it will use the specified
standard class user objects as the default objects instead of the
built-in global objects.