Home · All Classes · All Functions · Overviews

Obsolete Members for QPixmapCache

The following class members are obsolete. They are provided to keep old source code working. We strongly advise against using them in new code.

Static Public Members

bool find ( const QString & key, QPixmap & pixmap )   (obsolete)
QPixmap * find ( const QString & key )   (obsolete)

Member Function Documentation

bool QPixmapCache::find ( const QString & key, QPixmap & pixmap )   [static]

Use bool find(const QString&, QPixmap*) instead.

QPixmap * QPixmapCache::find ( const QString & key )   [static]

This is an overloaded function.

Returns the pixmap associated with the key in the cache, or null if there is no such pixmap.

Warning: If valid, you should copy the pixmap immediately (this is fast). Subsequent insertions into the cache could cause the pointer to become invalid. For this reason, we recommend you use bool find(const QString&, QPixmap*) instead.

Example:

 QPixmap* pp;
 QPixmap p;
 if ((pp=QPixmapCache::find("my_big_image", pm))) {
     p = *pp;
 } else {
     p.load("bigimage.png");
     QPixmapCache::insert("my_big_image", new QPixmap(p));
 }
 painter->drawPixmap(0, 0, p);


Copyright © 2010 Nokia Corporation and/or its subsidiary(-ies) Trademarks
Qt 4.6.3