QString arg

[faldzip]

Another thing which came to my mind is that maybe you can use QString::split() and QStringList::join():

QString test("_");
QString result = QString("This is number 99.").split(' ').join(test);
// this should give result = "This_is_number_99"

QString test("_");
QString result = QString("This is number 99.").split(' ').join(test);
// this should give result = "This_is_number_99"

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