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diff --git a/noncore/apps/checkbook/qrestrictedcombo.h b/noncore/apps/checkbook/qrestrictedcombo.h
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+++ b/noncore/apps/checkbook/qrestrictedcombo.h
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+/*
+ *
+ * Definition of QRestrictedCombo
+ *
+ * Copyright (C) 1997 Michael Wiedmann, <mw@miwie.in-berlin.de>
+ *
+ * Edited 2001 by Nick Betcher <nbetcher@usinternet.com> to work
+ * with Qt-only. Changed class name from LRestrictedLine to
+ * QRestrictedCombo in order to accomidate Combo Boxes.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the Free
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#ifndef QRESTRICTEDCOMBO_H
+#define QRESTRICTEDCOMBO_H
+
+#include <qcombobox.h>
+
+/**
+ * The QRestrictedCombo widget is a variant of @ref QComboBox which
+ * accepts only a restricted set of characters as input.
+ * All other characters will be discarded and the signal @ref #invalidChar()
+ * will be emitted for each of them.
+ *
+ * Valid characters can be passed as a QString to the constructor
+ * or set afterwards via @ref #setValidChars().
+ * The default key bindings of @ref QComboBox are still in effect.
+ *
+ * @short A line editor for restricted character sets.
+ * @author Michael Wiedmann <mw@miwie.in-berlin.de>
+ * @version 0.0.1
+ */
+class QRestrictedCombo : public QComboBox
+{
+  Q_OBJECT
+  Q_PROPERTY( QString validChars READ validChars WRITE setValidChars )
+
+public:
+
+  /**
+   * Constructor: This contructor takes three - optional - arguments.
+   *  The first two parameters are simply passed on to @ref QLineEdit.
+   *  @param parent   pointer to the parent widget
+   *  @param name     pointer to the name of this widget
+   *  @param valid    pointer to set of valid characters
+   */
+  QRestrictedCombo( QWidget *parent=0, const char *name=0,
+		   const QString& valid = QString::null);
+
+  /**
+   * Destructs the restricted line editor.
+   */
+  ~QRestrictedCombo();
+
+  /**
+   * All characters in the string valid are treated as
+   * acceptable characters.
+   */
+  void setValidChars(const QString& valid);
+  /**
+   * @return the string of acceptable characters.
+   */
+  QString validChars() const;
+
+signals:
+
+  /**
+   * Emitted when an invalid character was typed.
+   */
+  void	invalidChar(int);
+
+protected:
+  /**
+   * @reimplemented
+   */
+  void	keyPressEvent( QKeyEvent *e );
+
+private:
+  /// QString of valid characters for this line
+  QString	qsValidChars;
+};
+
+#endif // QRESTRICTEDCOMBO_H