Informix Error -4435

-4435 An acceptable hyphenated key format is CONTROL-X, where X is any letter

except A, D, H, L, R, or X.

When a key is trapped by an ON KEY clause, it loses other special functions; for example, if you trap the Escape key, you must use the OPTIONS statement to set up a different Accept key. You are not allowed to use one of the control keys A, D, H, L, R, or X because these keys have editing functions, and there is no method of assigning alternate keys to those functions.

Oninit® Troubleshooting Guidance

Reasons / Common Causes

-4435 fires when an ON KEY clause traps one of the reserved control keys A, D, H, L, R, or X — per the official guidance, these keys have built-in editing functions with no way to assign alternate keys, so they can't be trapped.

An ON KEY(CONTROL-X) clause naming one of the reserved letters A, D, H, L, R, or X, per the official guidance — the direct, only cause.

Solutions / Resolution

Use a different CONTROL-X letter, avoiding A, D, H, L, R, and X.

Examples

Trapping a reserved control key

ON KEY(CONTROL-D)
  ...
-- -4435: CONTROL-D is a reserved editing key

Corrected

ON KEY(CONTROL-N)
  ...

Diagnostic Checks

Check every ON KEY(CONTROL-X) clause, and confirm the letter isn't A, D, H, L, R, or X.

Related Errors / Related Topics

No closely related error codes are cross-referenced for -4435 in this set yet.

An ON KEY clause traps a reserved control key (A/D/H/L/R/X) — use a different letter.