+#ifndef MISC_H
+#define MISC_H
+
+#include <Qt>
+#include <iostream>
+using namespace std;
+
+class QString;
+class QPoint;
+class QPointF;
+class QRectF;
+class Vector;
+class QDialog;
+
+/////////////////////////////////////////////////////////////////////////////
+QString richTextToPlain(QString r);
+QString qpointToString(const QPoint &p);
+QString qpointFToString(const QPointF &p);
+QString qrectFToString(const QRectF &r, int d = 1);
+QString VectorToString(const Vector &p);
+
+extern ostream &operator<<(ostream &stream, QPoint const &p);
+extern ostream &operator<<(ostream &stream, QPointF const &p);
+extern ostream &operator<<(ostream &stream, QRectF const &r);
+extern ostream &operator<<(ostream &stream, Vector const &p);
+
+qreal getAngle(const QPointF &);
+qreal min(qreal, qreal);
+qreal max(qreal, qreal);
+qreal roof(qreal x);
+int round_int(qreal x);
+
+Qt::PenStyle penStyle(const QString &, bool &ok);
+QString penStyleToString(Qt::PenStyle);
+QPointF point(const QString &s, bool &ok);
+QString pointToString(const QPointF &p);
+
+void centerDialog(QDialog *dia);
+
+bool versionLowerThanVym(const QString &);
+bool versionLowerOrEqualThanVym(const QString &);
+bool versionLowerOrEqual(const QString &, const QString &);
+#endif