Password validation for multilanguages

[shankarraj]

Hi,

I am developing bootup screen in an application which is multilanguage application & it uses following languages:
Korean,Norwegian,Polish,Portuguese,Russian,Spanish,Swedish,
french,german,italian,Turkish,danish,dutch,greek,hungarian,finnish,czech.

Application uses Windows 7 as OS & it uses Visual Studio 2008 editor & VC++ as presentation layer.
The boot up screen is having password field. On entry of password: validation of password happens & on entry of correct password: user is able to see main window.
Here I am able to validate password for English language.[considering alphanumeric characters & special characters in password].
I do not have idea like how to carry password validation and also what characters to consider for password validation for non-English languages.
Please help.

regards,
shankarraj

[[Merged the two identical posts, Tobias]]

[tobias.hunger]

Please do not post the same issue in several threads. I took the liberty of merging them.

Considering that this is a really standard situation I put the merged thread under "General and Desktop", since you definitely do not need a C++ guru for this;-)

I would use unicode categories (see QChar::category()) to decide which characters to allow.