3.9 Fast Path Checklist

This Fast Path checklist offers a high-level overview of how to design a HLLAPI application. Each step is either required programming or a suggested procedure (indicated by *) to help assure a smooth-running HLLAPI application.

1. *Begin by outlining the manual steps your functions will automate. Note any screen text the user would look for, each keystroke entered, and the cursor position; note also any differences in behavior at the end of the screen.

2. Ensure that you have a 3270 emulation session with a session ID that matches the session identifier used by your HLLAPI program. (Refer to the SNAP-IX 3270 User's Guide or SNAP-IX TN3270 User's Guide.)

   In the application program:

3. Declare the parameters.

4. *Define error messages.

5. Initialize the function parameters. Be sure to verify data string length.

6. Call HLLAPI, passing all parameters in the correct order.

7. Check the return codes for each function call.