How can one tell if a given font contains a given symbol?

[Shaheed]

On Saturday 11 October 2003 13:02, Shaheed wrote:
> Hi all,
>
> How can I tell if a given font contains a given symbol, in other words,
> that QPainter will not end up displaying a hollow square?
>
> Alternatively, is there any programmatic way to find a font that contains a
> given symbol? For example, if I know I want a font with Bengali support, is
> there a way to do that?

Answering myself, I just found QFontDatabase...