奇怪，， 在构造函数里面初始化竟然出现错误

#ifndef MY_OPTION_H

#define MY_OPTION_H



#include <QWidget>



class QLineEdit;

class QLabel;

class QPushButton;



class My_option : public QWidget

{

    Q_OBJECT

public:

    explicit My_option(QWidget *parent = 0);



protected:

        QLabel    *label1;

        QLabel    *label2;

        QLineEdit *le_min;

        QLineEdit *le_max;

        QPushButton *certain_button;



        int imin;

        int imax;



signals:

    

public slots:

    

};



#endif // MY_OPTION_H

#include <QPushButton>

#include <QLineEdit>

#include <QLabel>

#include <QRegExpValidator>

#include <QRegExp>

#include "my_option.h"



My_option::My_option(QWidget *parent) :

    QWidget(parent)

{

        imin = 1;              //初始化这2个竟然程序会出现错误： 程序已经停止

        imax = 100;

        this->setFixedSize(400, 200);

        label1 = new QLabel(tr("range : "), this);

        label2 = new QLabel(tr("    --   "), this);

        label1->setFixedSize(60, 32);

        label2->setFixedSize(60, 32);



        le_min = new QLineEdit(this);

        le_max = new QLineEdit(this);

        le_min->setFixedSize(60, 32);

        le_max->setFixedSize(60, 32);



        label1->move(40, 40);

        le_min->move(100, 40);

        label2->move(160, 40);

        le_max->move(220, 40);





        QRegExp enter_num("[0-9]{1,4}");

        QRegExpValidator *le_validator = new QRegExpValidator(enter_num, this);

        le_min->setValidator(le_validator);

        le_max->setValidator(le_validator);





        certain_button = new QPushButton(tr("yes"), this);

        certain_button->setFixedSize(60, 32);

        certain_button->move(280 ,120);

}