How to write a additional code, which has to get triggered at the Scroll event of the QGraphicsView
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How to write a additional code at the Scroll event of the QGraphicsView. I want to do some additional operations in the scroll event of both the vertical and horizontal scroll bar.
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I would do something as below (may be my suggestion as well):
Derive QScrollBar to your own custom Scroll Bar and override the below methods per your requirement.
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virtual void mouseMoveEvent ( QMouseEvent * e )
virtual void mousePressEvent ( QMouseEvent * e )
virtual void mouseReleaseEvent ( QMouseEvent * e )
virtual void sliderChange ( SliderChange change )
@QGraphicsView has two methods which will replace the existing Scroll Bars.
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void QAbstractScrollArea::setHorizontalScrollBar ( QScrollBar * scrollBar )
void QAbstractScrollArea::setVerticalScrollBar ( QScrollBar * scrollBar )
@Replace the existing Scroll Bars with your custom Scroll Bar instances.
~veeraps
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Why don't you just connect to the scrollBar's valueChanged() signal?
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Wow! Andre - why didn't it strike my mind?
I did learn something new today - now that is a smarter way - thanks!
~veeraps
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Thanks for your replies. I used scrollContentsBy(int dx, int dy) function. Did overriding.
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Jothi - suggest you to edit the subject with [SOLVED] as the issue is solved.