void DrawPoint(int, int);
void DrawRoundedRect(QRectF, double, double);
void DrawPaddedRect(QRectF);
void DrawRect(QRectF);
void DrawText(QRectF, int, QString);
void DrawArrowhead(Vector, Vector, double);
void DrawPoint(int, int);
void DrawRoundedRect(QRectF, double, double);
void DrawPaddedRect(QRectF);
void DrawRect(QRectF);
void DrawText(QRectF, int, QString);
void DrawArrowhead(Vector, Vector, double);