StrictIntValidator.h

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#pragma once
 
#include <QIntValidator>
 
class StrictIntValidator : public QIntValidator
{
public:
    StrictIntValidator(int min, int max, QObject* parent = nullptr)
        : QIntValidator(min, max, parent)
    {
    }
 
    QValidator::State validate(QString& input, int& pos) const override
    {
        if (input.isEmpty())
            return Intermediate;
 
        if (QIntValidator::validate(input, pos) != Acceptable)
            return Invalid;
        return Acceptable;
    }
};