QItemSelectionRange ¶

概要 ¶

详细描述 ¶

A QItemSelectionRange contains information about a range of selected items in a model. A range of items is a contiguous array of model items, extending to cover a number of adjacent rows and columns with a common parent item; this can be visualized as a two-dimensional block of cells in a table. A selection range has a top() , left() a bottom() , right() 和 parent() .

QItemSelectionRange class is one of the 模型/视图类 and is part of Qt’s 模型/视图框架 .

The model items contained in the selection range can be obtained using the indexes() function. Use selectedIndexes() to get a list of all selected items for a view.

You can determine whether a given model item lies within a particular range by using the contains() function. Ranges can also be compared using the overloaded operators for equality and inequality, and the intersects() function allows you to determine whether two ranges overlap.

另请参阅

模型/视图编程 QAbstractItemModel QItemSelection QItemSelectionModel

class QItemSelectionRange ¶

QItemSelectionRange(other)

QItemSelectionRange(index)

QItemSelectionRange(topL, bottomR)

param topL

QModelIndex

param bottomR

QModelIndex

param other

QItemSelectionRange

param index

QModelIndex

Constructs an empty selection range.

Constructs a new selection range containing only the index specified by the topLeft and the index bottomRight .

PySide2.QtCore.QItemSelectionRange. bottom ( ) ¶

返回类型

int

Returns the row index corresponding to the lowermost selected row in the selection range.

PySide2.QtCore.QItemSelectionRange. bottomRight ( ) ¶

返回类型

QPersistentModelIndex

Returns the index for the item located at the bottom-right corner of the selection range.

另请参阅

bottom() right() topLeft()

PySide2.QtCore.QItemSelectionRange. contains ( index ) ¶

参数

index – QModelIndex

返回类型

bool

返回 true if the model item specified by the index lies within the range of selected items; otherwise returns false .

PySide2.QtCore.QItemSelectionRange. contains ( row , column , parentIndex ) ¶

参数

• row – int

• column – int

• parentIndex – QModelIndex

返回类型

bool

这是重载函数。

返回 true if the model item specified by ( row , column ) and with parentIndex as the parent item lies within the range of selected items; otherwise returns false .

PySide2.QtCore.QItemSelectionRange. height ( ) ¶

返回类型

int

Returns the number of selected rows in the selection range.

PySide2.QtCore.QItemSelectionRange. indexes ( ) ¶

返回类型

QModelIndexList

Returns the list of model index items stored in the selection.

PySide2.QtCore.QItemSelectionRange. intersected ( other ) ¶

参数

other – QItemSelectionRange

返回类型

QItemSelectionRange

Returns a new selection range containing only the items that are found in both the selection range and the other selection range.

PySide2.QtCore.QItemSelectionRange. intersects ( other ) ¶

参数

other – QItemSelectionRange

返回类型

bool

返回 true if this selection range intersects (overlaps with) the other range given; otherwise returns false .

PySide2.QtCore.QItemSelectionRange. isEmpty ( ) ¶

返回类型

bool

返回 true if the selection range contains no selectable item

PySide2.QtCore.QItemSelectionRange. isValid ( ) ¶

返回类型

bool

返回 true if the selection range is valid; otherwise returns false .

PySide2.QtCore.QItemSelectionRange. left ( ) ¶

返回类型

int

Returns the column index corresponding to the leftmost selected column in the selection range.

PySide2.QtCore.QItemSelectionRange. model ( ) ¶

返回类型

QAbstractItemModel

Returns the model that the items in the selection range belong to.

PySide2.QtCore.QItemSelectionRange. __ne__ ( other ) ¶

参数

other – QItemSelectionRange

返回类型

bool

返回 true if the selection range differs from the other range given; otherwise returns false .

PySide2.QtCore.QItemSelectionRange. __lt__ ( other ) ¶

参数

other – QItemSelectionRange

返回类型

bool

PySide2.QtCore.QItemSelectionRange. __eq__ ( other ) ¶

参数

other – QItemSelectionRange

返回类型

bool

返回 true if the selection range is exactly the same as the other range given; otherwise returns false .

PySide2.QtCore.QItemSelectionRange. parent ( ) ¶

返回类型

QModelIndex

Returns the parent model item index of the items in the selection range.

PySide2.QtCore.QItemSelectionRange. right ( ) ¶

返回类型

int

Returns the column index corresponding to the rightmost selected column in the selection range.

PySide2.QtCore.QItemSelectionRange. swap ( other ) ¶

参数

other – QItemSelectionRange

Swaps this selection range’s contents with other 。此函数非常快，且从不失败。

PySide2.QtCore.QItemSelectionRange. top ( ) ¶

返回类型

int

Returns the row index corresponding to the uppermost selected row in the selection range.

PySide2.QtCore.QItemSelectionRange. topLeft ( ) ¶

返回类型

QPersistentModelIndex

Returns the index for the item located at the top-left corner of the selection range.

另请参阅

top() left() bottomRight()

PySide2.QtCore.QItemSelectionRange. width ( ) ¶

返回类型

int

Returns the number of selected columns in the selection range.