Can't get the QRegExp I need

[yeye_olive]

There are square brackets (not always balanced) all over the pattern strings you wrote. You should re-read the documentation of QRegExp (especially the paragraph called "Introduction", which describes the syntax and semantics of the square brackets) and you will understand what is going on.

[roseicollis]

Oh I see, the brackets of DG are the problem. Thank you! I thought that it worked in other way until I re-read it

But I have still another problem, it accepts either 123DG1234 and 123DG12 which is wrong

[yeye_olive]

But I have still another problem, it accepts either 123DG1234 and 123DG12 which is wrong

Can you post a code sample reproducing the problem? If you get the pattern right, then QRegExpValidator::validate("123DG12", 0) should return QValidator::Intermediate.

[roseicollis]

Hi yeye thx for your help but Its solved now I just had to use exact match in that case only dunno why but... it works so.. Problem solved.

[jefftee]

I would recommend that you use QRegularExpression instead of QRegExp in any new code you are writing/fixing. QRegularExpression supports Perl Compatible Regular Expression (PCRE) and much better IMHO.