qt 子窗口访问父窗口中的成员函数、成员变量

Father.h

#ifndef FATHER_H
#define FATHER_H

#include <QtGui/QMainWindow>
#include "ui_Father.h"

class Father : public QMainWindow
{
	Q_OBJECT

public:
	Father(QWidget *parent = 0, Qt::WFlags flags = 0);
	~Father();
	QString GetString();

private slots:
	void on_pushButton_GetString_clicked();
	void on_pushButton_OpenSon_clicked();
	void on_pushButton_OutputString_clicked();

private:
	Ui::FatherClass m_FatherUi;

	QString m_string;
};

#endif // FATHER_H
#ifndef FATHER_H
#define FATHER_H