QItemSelection Class Reference
[QtGui module]
该QItemSelection类管理有关模型中的选定项目的信息。More...
Methods
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__init__ (self)
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__init__ (self, QModelIndex topLeft, QModelIndex bottomRight)
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__init__ (self, QItemSelection)
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append (self, QItemSelectionRange range)
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clear (self)
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bool contains (self, QModelIndex index)
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int count (self, QItemSelectionRange range)
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int count (self)
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QItemSelectionRange first (self)
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list-of-QModelIndex indexes (self)
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int indexOf (self, QItemSelectionRange value, int from = 0)
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insert (self, int i, QItemSelectionRange range)
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bool isEmpty (self)
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QItemSelectionRange last (self)
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int lastIndexOf (self, QItemSelectionRange value, int from = -1)
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merge (self, QItemSelection other, QItemSelectionModel.SelectionFlags command)
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move (self, int from, int to)
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prepend (self, QItemSelectionRange range)
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int removeAll (self, QItemSelectionRange range)
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removeAt (self, int i)
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replace (self, int i, QItemSelectionRange range)
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select (self, QModelIndex topLeft, QModelIndex bottomRight)
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swap (self, int i, int j)
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QItemSelectionRange takeAt (self, int i)
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QItemSelectionRange takeFirst (self)
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QItemSelectionRange takeLast (self)
Static Methods
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split (QItemSelectionRange range, QItemSelectionRange other, QItemSelection result)
Special Methods
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int __contains__ (self, QModelIndex index)
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__delitem__ (self, int i)
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__delitem__ (self, slice slice)
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bool __eq__ (self, QItemSelection other)
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QItemSelectionRange __getitem__ (self, int i)
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QItemSelection __getitem__ (self, slice slice)
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QItemSelection __iadd__ (self, QItemSelection other)
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QItemSelection __iadd__ (self, QItemSelectionRange value)
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__len__ (self)
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bool __ne__ (self, QItemSelection other)
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__setitem__ (self, int i, QItemSelectionRange range)
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__setitem__ (self, slice slice, QItemSelection list)
Detailed Description
该QItemSelection类管理有关模型中的选定项目的信息。
甲QItemSelection描述在已经由用户选择的模式中的项目。一个QItemSelection基本上是选择范围列表，请参阅QItemSelectionRange。它提供了用于创建和操作选择，并从模型中选择一个范围内的项目。
该QItemSelection类是一个Model/View Classes并且是Qt的一部分model/view framework。
项目选择可以构造并初始化为包含范围从现有的模型项目。下面的示例构造一个包含从给定的各类物品的选择model，开始在topLeft，和结束的bottomRight。
QItemSelection *selection = new QItemSelection(topLeft, bottomRight);
一个空的项目选择可以构造，后来填充的要求。因此，如果模型要当我们构建了项目选择为不可用，我们可以重写上面的代码中的方法如下：
QItemSelection *selection = new QItemSelection();
...
selection->select(topLeft, bottomRight);
QItemSelection节省内存，并避免不必要的工作，通过与选择范围工作，而不是记录的模型项目的索引为每个项目中选择。一般来说，这个类的实例将包含非重叠选择范围的列表。
使用merge（ ）合并一个项目的选择到另一个未做重叠的范围。使用split（ ）的基础上另外一个选择范围分割一个选择范围为更小的范围。
Method Documentation
QItemSelection.__init__ (self)
构造一个空的选择。
QItemSelection.__init__ (self, QModelIndex topLeft, QModelIndex bottomRight)
构造一个项目选择，从左上角模型项目延伸，由指定的topLeft指数，在右下角项目，由指定的bottomRight。
QItemSelection.__init__ (self, QItemSelection)
QItemSelection.clear (self)
bool QItemSelection.contains (self, QModelIndex index)
如果选择包含给定的，则返回Trueindex否则返回False 。
int QItemSelection.count (self, QItemSelectionRange range)
int QItemSelection.count (self)
list-of-QModelIndex QItemSelection.indexes (self)
返回对应于所选择的项的模型索引的列表。
int QItemSelection.indexOf (self, QItemSelectionRange value, int from = 0)
QItemSelection.insert (self, int i, QItemSelectionRange range)
bool QItemSelection.isEmpty (self)
int QItemSelection.lastIndexOf (self, QItemSelectionRange value, int from = -1)
合并的other选择与此QItemSelection使用command给出。这种方法保证了没有范围是重叠的。
请注意，只有QItemSelectionModel.Select，QItemSelectionModel.Deselect和QItemSelectionModel.Toggle被支持。
See also split（ ） 。
QItemSelection.move (self, int from, int to)
int QItemSelection.removeAll (self, QItemSelectionRange range)
QItemSelection.removeAt (self, int i)
QItemSelection.replace (self, int i, QItemSelectionRange range)
QItemSelection.select (self, QModelIndex topLeft, QModelIndex bottomRight)
添加该范围中的项目，从左上角的模型项上延伸，由指定的topLeft指数，在右下角项目，由指定的bottomRight到列表中。
Note: topLeft和bottomRight必须具有相同的父代。
拆分选择range使用选择other范围。在删除所有项目other从range并将该结果result。这可以用的语义进行比较subtract的一组操作。
See also merge（ ） 。
QItemSelection.swap (self, int i, int j)
int QItemSelection.__contains__ (self, QModelIndex index)
QItemSelection.__delitem__ (self, int i)
QItemSelection.__delitem__ (self, slice slice)
bool QItemSelection.__eq__ (self, QItemSelection other)
QItemSelectionRange QItemSelection.__getitem__ (self, int i)
QItemSelection QItemSelection.__getitem__ (self, slice slice)
QItemSelection.__len__ (self)
bool QItemSelection.__ne__ (self, QItemSelection other)
QItemSelection.__setitem__ (self, int i, QItemSelectionRange range)
QItemSelection.__setitem__ (self, slice slice, QItemSelection list)
