gistfile1.m

- (void)performDragOperation:(CPDraggingInfo)aSender
{
    var data = [[aSender draggingPasteboard] dataForType:WidgetDragType];
    var widget = [CPKeyedUnarchiver unarchiveObjectWithData:data];
    var dropLocationX = [aSender draggedViewLocation].x - [[aSender draggingSource] frame].size.width;
    var dropLocationY = [aSender draggedViewLocation].y - [[aSender draggedView] frame].size.height;
    [widget setFrameOrigin:CGPointMake (dropLocationX, dropLocationY)];
    [self addSubview:widget];    
}