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Asked: 2026-06-01T12:00:55+00:00

I try to fetch a float number from a QString using toFloat() method but

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I try to fetch a float number from a QString using toFloat() method but i get 0 for every number i fetch. I think number format is wrong and system does not recognize it, how can i set right format for these kind of numbers : 119,68648 ?

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1 Answer

  1. Editorial Team

    Please see http://qt-project.org/doc/qt-4.8/qlocale.html#toDouble

    Here is the example code from the documentation:

    bool ok;
double d;

QLocale german(QLocale::German);
d = german.toDouble( "1234,56", &ok );  // ok == true, d == 1234.56
d = german.toDouble( "1.234,56", &ok ); // ok == true, d == 1234.56
d = german.toDouble( "1234.56", &ok );  // ok == false

d = german.toDouble( "1.234", &ok );    // ok == true, d == 1234.0
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