# [ref_impl_eiffel] [431] AWB-14: Fix a precondition violation in set_focus when called from MAIN_WINDOW.suppress_tab_key_insertion.

**Category:** [Reference Implementation: Eiffel (archive)](https://discourse.openehr.org/c/reference-implementation-eiffel-archive/161)
**Created:** 2008-01-01 01:19 UTC
**Views:** 1
**Replies:** 0
**URL:** https://discourse.openehr.org/t/ref-impl-eiffel-431-awb-14-fix-a-precondition-violation-in-set-focus-when-called-from-main-window-suppress-tab-key-insertion/12706

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## Post #1 by @svn1

Revision: 431
Author:   peter\.gummer

Log Message:

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**Canonical:** https://discourse.openehr.org/t/ref-impl-eiffel-431-awb-14-fix-a-precondition-violation-in-set-focus-when-called-from-main-window-suppress-tab-key-insertion/12706
**Original content:** https://discourse.openehr.org/t/ref-impl-eiffel-431-awb-14-fix-a-precondition-violation-in-set-focus-when-called-from-main-window-suppress-tab-key-insertion/12706