QSettings , read only avaiable?

[jpn]

Well, like I said, it was an improvement idea. I didn't even mean to give a 100% ready solution.

But alright, this changes the situation a bit. It might be easiest to check whether such application exists, go into the child group and pick version numbers:

QStringList allsoftware = settings.childGroups();
if (allsoftware.contains("GPL Ghostscript"))
{
    settings.beginGroup("GPL Ghostscript");
    QStringList versions = settings.childGroups();
    qSort(versions.begin(), versions.end(), versionGreaterThan);
    settings.endGroup();
    ...
}

QStringList allsoftware = settings.childGroups();
if (allsoftware.contains("GPL Ghostscript"))
{
    settings.beginGroup("GPL Ghostscript");
    QStringList versions = settings.childGroups();
    qSort(versions.begin(), versions.end(), versionGreaterThan);
    settings.endGroup();
    ...
}

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This also simplifies the compare function a bit.