[SOLVED] Force point and not comma for floating point in Qt

Issue

I have a very basic question: how can I enforce the use of points in floating-point numbers instead of a comma (I have a french version of my OS) in Qt?

Other question :is it possible to display numbers with space for thousands separators?

Solution

Try this:

QLocale loc = QLocale::system(); // current locale
loc.setNumberOptions(QLocale::c().numberOptions()); // borrow number options from the "C" locale
QLocale::setDefault(loc); // set as default

If you want all of the options as in the “C” locale, you can simply do

QLocale::setDefault(QLocale::c());

Regarding your second question: Qt does not support custom locales, but you can try setting the number options to, say, Hungary’s locale (it should produce 1234 and 12 345.67 – I haven’t tried it myself)

QLocale loc = QLocale::system(); // current locale
QLocale hungary(QLocale::Hungarian);
loc.setNumberOptions(hungary.numberOptions()); // borrow number options from the Hungarian locale
QLocale::setDefault(loc); // set as default

Answered By – Oleg2718281828

Answer Checked By – Robin (BugsFixing Admin)