QtCanvasPolygon does not paint

[YuriyRusinov]

Hello, All !

I want to draw polygon on QtCanvasView. I make

QtCanvasView *view;
QtCanvasPolygon scrPol (view->canvas());
scrPol.setPoints (scrPts);
QPen selPen (Qt::red);
scrPol.setPen (selPen);
 
QBrush selBrush (Qt::red, Qt::DiagCrossPattern);
scrPol.setBrush (selBrush);
view->repaint ();

QtCanvasView *view;
QtCanvasPolygon scrPol (view->canvas());
scrPol.setPoints (scrPts);
QPen selPen (Qt::red);
scrPol.setPen (selPen);

QBrush selBrush (Qt::red, Qt::DiagCrossPattern);
scrPol.setBrush (selBrush);
view->repaint ();

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But my polygon doesn't paint, I check coordinates of vertexes, all are correct.

Thanks in advance.