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| author | Alexis Menard <alexis.menard@nokia.com> | 2009-06-04 10:36:16 (GMT) |
|---|---|---|
| committer | Alexis Menard <alexis.menard@nokia.com> | 2009-06-04 10:37:07 (GMT) |
| commit | c2bad7dba5eccd5450eaf7eddaebc75b8410fa95 (patch) | |
| tree | f7af3b782dfda7bdea647621b715d7dfd8684762 /src/gui/image/qpixmapcache.cpp | |
| parent | ba4d556e7c9f0f6f2c02893326eec76c21f46fc7 (diff) | |
| download | Qt-c2bad7dba5eccd5450eaf7eddaebc75b8410fa95.zip Qt-c2bad7dba5eccd5450eaf7eddaebc75b8410fa95.tar.gz Qt-c2bad7dba5eccd5450eaf7eddaebc75b8410fa95.tar.bz2 | |
Add an extra explanation for the API extension.
Reviewed-by:David Boddie
Diffstat (limited to 'src/gui/image/qpixmapcache.cpp')
| -rw-r--r-- | src/gui/image/qpixmapcache.cpp | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/gui/image/qpixmapcache.cpp b/src/gui/image/qpixmapcache.cpp index 82b42b4..bdcddfd 100644 --- a/src/gui/image/qpixmapcache.cpp +++ b/src/gui/image/qpixmapcache.cpp @@ -65,7 +65,10 @@ QT_BEGIN_NAMESPACE object for caching the pixmaps. The cache associates a pixmap with a string as a key or with a QPixmapCache::Key. - The QPixmapCache::Key is faster than using strings as key. + The QPixmapCache::Key is faster than using strings as key. The string API is + very convenient for complex keys but the QPixmapCache::Key API will be very efficient + and convenient for a 1 object <-> 1 pixmap mapping (then you can store the key as + a member). If two pixmaps are inserted into the cache using equal keys, then the last pixmap will hide the first pixmap. The QHash and QCache classes do exactly the same. |