Regular Expression for QDate [YYYY/MM/DD] format

[haneen2017]

What about QDateTimeEdit::date(), QDateTimeEdit::dateTime() and QDateTimeEdit::time()?

The code below worked for this format, d/M/yyyy i.e 1/12/2019

QRegExp R_date("([1-9]|[12][0-9]|3[01]{1,2})/([1-9]|[12]{1,2})/(19[0-9][0-9]|20[0-9][0-9])");
QRegExpValidator *valida = new QRegExpValidator(R_date, this);
ui->lineEdit->setValidator(valida);

QRegExp R_date("([1-9]|[12][0-9]|3[01]{1,2})/([1-9]|[12]{1,2})/(19[0-9][0-9]|20[0-9][0-9])");
QRegExpValidator *valida = new QRegExpValidator(R_date, this);
ui->lineEdit->setValidator(valida);

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The code below worked for this format, dd/MM/yyyy i.e 01/12/2019, 02/03/2019

QRegExp R_date("(0[1-9]|[12][0-9]|3[01]{1,2})/(0[1-9]|[12]{1,2})/(19[0-9][0-9]|20[0-9][0-9])");
QRegExpValidator *valida = new QRegExpValidator(R_date, this);
ui->lineEdit->setValidator(valida);

QRegExp R_date("(0[1-9]|[12][0-9]|3[01]{1,2})/(0[1-9]|[12]{1,2})/(19[0-9][0-9]|20[0-9][0-9])");
QRegExpValidator *valida = new QRegExpValidator(R_date, this);
ui->lineEdit->setValidator(valida);

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