Informix Error -50109: Attempt to set a negative tabIndex in ixControl constructor. Using defaultTabOrder instead (tabIndex must be positive, noTab, or defaultTabOrder).

Reasons / Common Causes

-50109 is raised by the ixControl class in the Window Painter GUI builder library — per the official guidance:

The ixControl constructor generates this message if the program attempts to set a negative tab index for the control. Negative tab indexes are not supported. The defaultTabOrder is used.

1. Attempt to set a negative tabIndex in ixControl constructor. Using defaultTabOrder instead (tabIndex must be positive, noTab, or defaultTabOrder), per the official guidance — the direct, documented condition.

Solutions / Resolution

1. A documented default value is substituted automatically, per the official guidance, so the program keeps running — but the supplied value should still be corrected at the source.

Examples

N/A

No specific triggering statement is documented beyond the class-library condition described above.

Diagnostic Checks

1. Check the specific value, object state, or call sequence that ixControl flags here, against the constraint the official guidance describes.

Related Errors / Related Topics

• -50108 — "Attempt to set a negative tabIndex in ixControl::setTabIndex(). The tabIndex will not be changed (tabIndex must be positive or noTab)." Another ixControl-related condition in this set.

Attempt to set a negative tabIndex in ixControl constructor. Using defaultTabOrder instead (tabIndex must be positive, noTab, or defaultTabOrder).