对DragDropMode的理解

 

 

QAbstractItemView::DragOnly

1

The view supports dragging of its own items

感觉没什么用啊，看到一个禁止拖拽的小图表

 

 

QAbstractItemView::DropOnly

2

The view accepts drops

什么也看不到 

 

 

 

 

QAbstractItemView::DragDrop

3

The view supports both dragging and dropping

拖拽完之后，会新建一个item

 

 

QAbstractItemView::InternalMove

4

The view accepts move (not copy) operations only from itself.

拖拽，不新建，

self.treeWidget.setDragDropMode(QTreeWidget.InternalMove)