Creating a PowerBuilder extension – PB Docs 2019

To build a PowerBuilder extension, follow these steps:

Step 1: Decide on a feature
to implement.

Step 2: Define the
classes and functions in the extension .

Step 3: Declare native
classes and global functions.

Step 4: Implement native
classes and global functions.

Step 5: Export methods
to create class instances.

Step 6: Build a PBX
.

These steps apply whether you are building a nonvisual or a visual
extension. The differences between building nonvisual and visual
extensions are described in Creating and using a visual
extension. This section focuses primarily on nonvisual
extensions.

Required methods

All PowerBuilder nonvisual extensions must export two methods:
PBX_GetDescription and PBX_CreateNonVisualObject. The use of these methods
is described in Step 2:
Define the classes and functions in the extension and Step 5: Export methods to create
class instances.

PowerBuilder visual extensions must export PBX_GetDescription and
PBX_CreateVisualObject. See Creating and using a visual
extension.

If the extension declares global functions, it must also export the
PBX_InvokeGlobalFunction method.

For every native class, you must implement two PBNI methods,
Invoke and Destroy, in addition to the methods the class will provide. The
use of these PBNI methods is described in Step 4: Implement native classes and
global functions.