how to mark a point on image.Image is already draw on QLabel and set using setPixmap

[wysota]

Did you try compiling this code? IMO it won't compile.

You need to call the base class implementation in the paint event, that's for sure.

[scascio]

To answer your question, just call the base class in your paintEvent:

void Widget::paintEvent(QPaintEvent * event) {
  //this will draw your widget, and therefore the label too
  QWidget::paintEvent(event);
 
  //then draw your point 
  Qpainter painter(this);
  painter.drawPoint(x, y);
}

void Widget::paintEvent(QPaintEvent * event) {
  //this will draw your widget, and therefore the label too
  QWidget::paintEvent(event);

  //then draw your point 
  Qpainter painter(this);
  painter.drawPoint(x, y);
}

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But to answer your problem, if you are trying to implement a GIS engine with QLabeland painting points, maybe you should better read the documentation about about QGraphicsViewand QGraphicsPixmapItem.

[bpatel]

@above
tbahks yaar for reply