Discriminant Value Table Dialog Box (Host File Designer)
Use the Discriminant Value Table dialog box to create the logic for determining which union member returns information to the calling procedure. You can open the Discriminant Value Table dialog box by viewing the properties of an instanced union member, clicking DVT, and then clicking the ellipsis (…) button.
| Use this | To do this |
|---|---|
| Discriminant Variable | List the name of the selected union. |
| Discriminant type | List the data type that the union will use to create the logic. |
| Discriminant Value Table | Create the Discriminant Value Table. The Union Member column lists the union members that will be checked, in order. The Condition column describes what to check for in order to use that member. |
| Move Up | Move a union member and associated condition up in priority. |
| Move Down | Move a union member and associated condition down in priority. |
| Delete | Delete a union member and associated condition from the DVT. It does not delete the member from the union. You may add the union member back into the DVT at any time. |
| OK | Save the additions you make to the DVT, and close the dialog box. |
| Cancel | Close the dialog box without saving the changes you made to the DVT. |