About calling PowerScript from C++ applications
If you have a PowerBuilder custom class user object that performs intensive
programming that would be useful to an application that you need
to write in C++, you can access the object directly
from the C++ application using PBNI. You do not
need to make the user object into a COM component or automation
server.
To call functions on a PowerBuilder object, you can embed
the PBVM in the C++ application. The C++ application
must load the PBVM by loading pbvm170.dll with
the Windows LoadLibrary function, get a pointer to
the IPB_VM interface by calling the PB_GetVM function
exported by pbvm170.dll, and create a session
by calling the IPB_VM CreateSession function.The
application can then create an instance of the PowerBuilder class
and invoke its functions through the IPB_Session interface.
The following figure illustrates the relationship between
the C++ application and the interfaces provided
by the PBVM.
Figure 5-1: Embedding the PBVM in a C++ application
