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CFAttributedStringGetAttributes(_:_:_:)

Returns the attributes of an attributed string at a specified location.

Declaration

func CFAttributedStringGetAttributes(_ aStr: CFAttributedString!, _ loc: CFIndex, _ effectiveRange: UnsafeMutablePointer<CFRange>!) -> CFDictionary!

Parameters

  • aStr:

    The attributed string to examine.

  • loc:

    The location in str at which to determine the attributes. loc must not exceed the bounds of str.

  • effectiveRange:

    If not NULL, upon return contains a range including loc over which exactly the same set of attributes apply as at loc.

Return Value

A dictionary that contains the attributes of str at the specified location. Ownership follows the The Get Rule.

Discussion

For performance reasons, a range returned in effectiveRange is not necessarily the maximal range. If you need the maximum range, you should use CFAttributedStringGetAttributesAndLongestEffectiveRange(_:_:_:_:).

Note that the returned attribute dictionary might change in unpredictable ways if the attributed string is edited after this call. If you want to preserve the state of the dictionary, you should make an actual copy of it rather than just retaining it. In addition, you should make no assumptions about the relationship of the actual dictionary returned by this call and the dictionary originally used to set the attributes, other than the fact that the values stored in the dictionaries will be identical (that is, ==) to those originally specified.

See Also

Accessing Attributes