Alpar had the key, focus can be set in the window class. But it is not enough, the focused widget has to be activated, as well! Was a hard task to find out... By the way, two compilation warnings are removed.
2 * lemon/template.h - Part of LEMON, a generic C++ optimization library
4 * Copyright (C) 2005 Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
5 * (Egervary Research Group on Combinatorial Optimization, EGRES).
7 * Permission to use, modify and distribute this software is granted
8 * provided that this copyright notice appears in all copies. For
9 * precise terms see the accompanying LICENSE file.
11 * This software is provided "AS IS" with no warranty of any kind,
12 * express or implied, and with no claim as to its suitability for any
17 #ifndef LEMON_TEMPLATE_H
18 #define LEMON_TEMPLATE_H
20 #endif // LEMON_TEMPLATE_H