在header中放置变量的位置

我需要能够访问在mainwindow.h中声明的QList<QRadioButton *> colorList，从winger .cpp.

我将在这里显示我当前的尝试。

mainwindow.h

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>
#include <QPushButton>
#include <QTextEdit>
#include <QCheckBox>
#include <Qlist>
#include <QRadioButton>
namespace Ui {
class MainWindow;
}
class MainWindow : public QMainWindow
{
    Q_OBJECT
public:
    explicit MainWindow(QWidget *parent = 0);

    ~MainWindow();
private slots:
    void runButtonClicked();
private:
    Ui::MainWindow *ui;
    QPushButton *runButton;
        QTextEdit * runText;
    };
 QList<QRadioButton *> colorList; // where should i put this??

    #endif // MAINWINDOW_H

错误:LNK2005: "class QList colorList" (?colorList@@ 3v ?$QList@PAVQRadioButton@@@@A)已在main.obj中定义

wager.cpp

#include "wager.h"
#include "mainwindow.h"
#include "deck.h"
Wager::Wager()
{
}
void build_bet_lists()
{
for(int i=0;i<5;i++)
    {
        qDebug()<<colorList[i]->isChecked;
}
}

colorList在

mainwindow.cpp

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
QRadioButton * street1BetBlack = new QRadioButton("Black");
QRadioButton * street2BetBlack = new QRadioButton("Black");
QRadioButton * street3BetBlack = new QRadioButton("Black");
QRadioButton * street4BetBlack = new QRadioButton("Black");
QRadioButton * street5BetBlack = new QRadioButton("Black");
QRadioButton * street1BetRed = new QRadioButton("Red");
QRadioButton * street2BetRed = new QRadioButton("Red");
QRadioButton * street3BetRed = new QRadioButton("Red");
QRadioButton * street4BetRed = new QRadioButton("Red");
QRadioButton * street5BetRed = new QRadioButton("Red");
QList<QRadioButton *> colorList;
colorList << street1BetBlack << street1BetRed << street2BetBlack << street2BetRed << street3BetBlack << street3BetRed << street4BetBlack << street4BetRed << street5BetBlack << street5BetRed ;
}