invalidateLayout(forCharacterRange:actualCharacterRange:)
Invalidates the layout information for the glyphs that map to the specified character range.
Declaration
func invalidateLayout(forCharacterRange charRange: NSRange, actualCharacterRange actualCharRange: NSRangePointer?)Parameters
- charRange:
The range of characters to invalidate.
- actualCharRange:
If not
NULL, on output, the actual range invalidated after any necessary expansion.
Discussion
This method has the same effect as invalidateLayout(forCharacterRange:isSoft:actualCharacterRange:) with flag set to false.
This method only invalidates information; it performs no glyph generation or layout. You should rarely need to invoke this method.