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Editorial Team
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Asked: 2026-05-18T21:30:37+00:00

I am using Qt 4.7.1 and embedded a webview in my app. But I

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I am using Qt 4.7.1 and embedded a webview in my app. But I got the following error when trying to visit http://webkit.org/demos/sticky-notes/ to test the HTML 5 database feature

Failed to open the database on disk.  This is probably because the version 
was bad or there is not enough space left in this domain's quota

I compiled my static Qt library with the following command:

configure --prefix=/usr/local/qt-static-release-db --accessibility --multimedia 
--audio-backend --svg --webkit --javascript-jit --script --scripttools 
--declarative --release -nomake examples -nomake demos --static --openssl -I
/usr/local/ssl/include -L /usr/local/ssl/lib -confirm-license -sql-qsqlite 
-sql-qmysql -sql-qodbc
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1 Answer

  1. Editorial Team

    Check QWebSettings documentation.

    In particular, you have to use setAttribute to enable QWebSettings::OfflineStorageDatabaseEnabled and point out the local storage location using setOfflineStoragePath (e.g. QDesktopServices::DataLocation).

    You might want to do it per-page, but as an example, doing it globally can be done using:

        QWebSettings::globalSettings()->setAttribute(QWebSettings::OfflineStorageDatabaseEnabled, true);
    QWebSettings::globalSettings()->setOfflineStoragePath(QDesktopServices::storageLocation(QDesktopServices::DataLocation));
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