c++ - Get elapsed time as a formatted string -

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i looking simplest way calculate , display execution time of function in qt. result should string/qstring in format mm:ss.

i know can int of milliseconds qtime there built-in function formatting?

if have elapsed time in milliseconds (ms), can print time in mm:ss format in following way:

qstring out = qstring("%1:%2").arg( ms / 60000        , 2, 10, qchar('0'))                               .arg((ms % 60000) / 1000, 2, 10, qchar('0'));

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