Hai, I am trying to create a chess board. Here I want to do a operation like when ever a coin is clicked and dragged, at that time that picture should be copied and be placed in that old position. I don't know in which function I have to do it. When I made it on mouse pressed, then tyhe copy is coming above the original(layer wise). So somebody please help me
A:
Simplest way to do this will be to put 2 identical QGraphicsItems for each coin/piece at the same location. The top one will be dragged and moved while the bottom one will stay for the visual cue you want.
Once the top one is dropped to the new location, move the bottom one there too.
Stephen Chu
2010-06-20 17:42:25
To do the above which are the functions I have to override in QGraphicsScene
prabhakaran
2010-06-21 04:05:42
There's no function to override. Just place 2 identical items into the scene at the same location.
Stephen Chu
2010-06-21 12:22:49
A:
When I made it on mouse pressed, then tyhe copy is coming above the original(layer wise).
When you got this far, simply adding a call to myItemCopy->setZValue( -1 ) would place the copy "behind" the original item.
A different approach, and possibly "cleaner", would be to use QDrag and tell Qt how to paint your item during the Drag operation. See Qt's "Drag and Drop Robot" example for reference: http://doc.qt.nokia.com/4.6/graphicsview-dragdroprobot.html
Happy coding! Robin
Robin
2010-06-21 17:11:49