To learn Qt, I'm creating something that resembles a chess board. I'm not going to implement the game logic; I just want to toy with mouse click events and drag events.

I want to be able to drag chess pieces (without drop for now), but the chess piece's mousePressEvent and mouseMoveEvent don't get triggered when I expect them to. I double checked it by putting breakpoints at the start of both event handling functions.

The GUI



Each chess piece is represented by an instance of this class.

Qt Code: 
  1. class ChessPiece : public QGraphicsPixmapItem
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Each board tile is represented by an instance of this class.

Qt Code: 
  1. class BoardTile : public QGraphicsItem
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chesspiece.h (snippet)

Qt Code: 
  1. void mousePressEvent(QGraphicsSceneMouseEvent *event);
  2. void mouseMoveEvent(QGraphicsSceneMouseEvent *event);
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If there are any important code snippets that you need to see to help me out, either ask me to post them or download the full source here. I work with QtCreator.