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| author | Oswald Buddenhagen <oswald.buddenhagen@nokia.com> | 2010-01-29 12:07:28 (GMT) |
|---|---|---|
| committer | Oswald Buddenhagen <oswald.buddenhagen@nokia.com> | 2010-02-01 12:59:15 (GMT) |
| commit | 45591e13862963fb29c13e0c5bfe39330883c579 (patch) | |
| tree | e409d41c84348123fddd04b2ef065eaf75e6fa4b /src/corelib | |
| parent | 984689f01ce31cade5452633dd43f676bdb75b73 (diff) | |
| download | Qt-45591e13862963fb29c13e0c5bfe39330883c579.zip Qt-45591e13862963fb29c13e0c5bfe39330883c579.tar.gz Qt-45591e13862963fb29c13e0c5bfe39330883c579.tar.bz2 | |
document QString::fromUtf16() slowness
Diffstat (limited to 'src/corelib')
| -rw-r--r-- | src/corelib/tools/qstring.cpp | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/corelib/tools/qstring.cpp b/src/corelib/tools/qstring.cpp index b9dd4d1..44e4d16 100644 --- a/src/corelib/tools/qstring.cpp +++ b/src/corelib/tools/qstring.cpp @@ -3857,6 +3857,12 @@ QString QString::fromUtf8(const char *str, int size) If \a size is -1 (default), \a unicode must be terminated with a 0. + This function checks for a Byte Order Mark (BOM). If it is missing, + host byte order is assumed. + + This function is comparatively slow. + Use QString(const ushort *, int) if possible. + QString makes a deep copy of the Unicode data. \sa utf16(), setUtf16() @@ -3923,6 +3929,9 @@ QString& QString::setUnicode(const QChar *unicode, int size) If \a unicode is 0, nothing is copied, but the string is still resized to \a size. + Note that unlike fromUtf16(), this function does not consider BOMs and + possibly differing byte ordering. + \sa utf16(), setUnicode() */ @@ -4669,6 +4678,8 @@ int QString::localeAwareCompare_helper(const QChar *data1, int length1, Returns the QString as a '\\0\'-terminated array of unsigned shorts. The result remains valid until the string is modified. + The returned string is in host byte order. + \sa unicode() */ |