#include<qlineedit.h>class QLineEdit;class MyWidget:public QWidget{        Q_OBJECT	public:		MyWidget(QWidget *parent = 0, const char  *name = 0);		~MyWidget();        protected:                QLineEdit *phone_edit, *qlineedit_test;        public slots:                void insert_1();                void insert_2();                void insert_3();                void insert_4();                void insert_5();                void insert_6();                void insert_7();                void insert_8();                void insert_9();                void insert_0();                void insert_11();                void insert_12();		void lineedit_clear();		void lineedit_backspace();		void data_send_com();};