CODEWITHSUNDEEP
c++qtqgraphicsview
user3561614
user3561614

Reputation: 1094

How to select a position and add an item in a QGraphicsView by mouse click?

I would like to select positions and items in a QGraphicsView by mouse click and add items to the connected view at this position/item. Do I need to implement my own subclass of QGraphicsView or is there a shorter solution, e.g. with signal/slot?

Upvotes: 0

Views: 425

Answers (1)

Ilya
Ilya

Reputation: 4689

There are few ways to do it:

  • Reimplement mousePressEvent(QMouseEvent*) (so, you need to implement subclass of QGraphicsView),

  • Call installEventFilter(QObject *) for QGraphicsView and implement bool eventFilter(QObject *, QEvent *) to catch all events (and process only QEvent::MouseButtonPress inside this function). In this case you do not need to implement subclass of QGraphicsView.

See also: Click event for QGraphicsView Qt and How to draw a point (on mouseclick) on a QGraphicsScene

Upvotes: 1

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