Release 10.1A: OpenEdge Development:
Programming Interfaces

Using shared libraries

Progress lets you access shared libraries by declaring and executing the shared library routines in a manner similar to Progress internal procedures. Thus, to use a shared library routine from within OpenEdge, you must complete the following tasks:

Declare each routine, including input and output parameter definitions, in a PROCEDURE statement.
For each shared library parameter definition, specify the parameter data type that matches the C data type of the corresponding routine parameter.
For each Progress variable you pass as a routine parameter, ensure that the data type of the variable is compatible with the parameter data type.
Execute the shared library routine using the RUN statement. Pass the specified fields, variables, and any required Windows widget handles.
Build and manage any structures used by the routine.

Progress also allows you to program how long shared libraries remain memory-resident during application execution.