QPixmaps don't seem to deallocate from memory(solved)

**jpn** · 14th August 2007, 18:15

Without keyword "new":

Qt Code:

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QList<QPixmap> thumbnails;
...
// qDeleteAll(thumbnails); // remove this
thumbnails.clear();
...
QPixmap image = QPixmap(database->cell(currentRows.at(row), "thumbnail" + thumbnailSize));
thumbnails += image;

QList<QPixmap> thumbnails;
...
// qDeleteAll(thumbnails); // remove this
thumbnails.clear();
...
QPixmap image = QPixmap(database->cell(currentRows.at(row), "thumbnail" + thumbnailSize));
thumbnails += image;

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**timothy.crosley** · 14th August 2007, 18:36

I should have known what you meant

. Sadly this still doesn't fix the memory leak(I actually had it this way originally). I have been trying to fix this bug for 3 days now and its driving me insane

.
~Timothy

**spud** · 14th August 2007, 19:04

Since you mentioned the QPixmapCache, what does QPixmapCache::cacheLimit () return.

**timothy.crosley** · 14th August 2007, 19:33

It returns 1024.

**marcel** · 14th August 2007, 19:47

If you have the possibility, step in the QPixmap destructor and see if it deletes the data member.

Qt Code:

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[B]void QPixmap::deref()
{
    if(data && data->deref()) { // Destroy image if last ref
        if (qt_pixmap_cleanup_hook_64)
            qt_pixmap_cleanup_hook_64(cacheKey());
        delete data;
        data = 0;
    }
}[/B]

[B]void QPixmap::deref()
{
    if(data && data->deref()) { // Destroy image if last ref
        if (qt_pixmap_cleanup_hook_64)
            qt_pixmap_cleanup_hook_64(cacheKey());
        delete data;
        data = 0;
    }
}[/B]

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Regards