Release 10.1A: OpenEdge Development:
Programming Interfaces

Using HLC library functions

The HLC library functions provide an interface between your C functions and Progress. From your C functions, you can call HLC library functions that perform the following tasks:

Read data from and write data to Progress 4GL shared or global variables.
Read data from and write data to Progress 4GL shared buffers.
Display Progress-like messages.
Control interrupts.
Perform timer-service operations.