Improve and simplify the use of versions

sources/qetversion.h

@@ -0,0 +1,43 @@
+/*
+    Copyright 2006-2023 The QElectroTech Team
+    This file is part of QElectroTech.
+
+    QElectroTech is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 2 of the License, or
+    (at your option) any later version.
+
+    QElectroTech 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 General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with QElectroTech.  If not, see <http://www.gnu.org/licenses/>.
+*/
+#ifndef QETVERSION_H
+#define QETVERSION_H
+
+#include <QVersionNumber>
+#include <QDomElement>
+
+namespace QetVersion
+{
+    enum VersionType {
+        dev = 0,
+        alpha1 = 1,
+        alpha2 = 2,
+        alpha3 = 3,
+        stable = 4
+    };
+
+    QVersionNumber currentVersion();
+    QString displayedVersion();
+
+    QVersionNumber versionZeroDotSix();
+
+    void toXmlAttribute(QDomElement &xml);
+    QVersionNumber fromXmlAttribute(const QDomElement &xml);
+}
+
+#endif // QETVERSION_H