图书管理系统学生信息界面

#ifndef STUDENTINFO_H
#define STUDENTINFO_H
#include <QtGui>
class studentinfo:public QWidget
{
Q_OBJECT
public slots:
void change1(void);
void dele1(void);
void input1(void);
public:
studentinfo(QWidget *parent=0);
public:
QLabel id2,pass,name,dept;
QPushButton input,change,dele;
QLineEdit idline,passline,nameline,deptline;
};
#endif

#include "myWeiget.h"
#include "studentinfo.h"
#include "studentwin.h"
#include "dbawin.h"
#include "tushuku.h"
#include <QSqlDriver>
#include <QSqlDatabase>
#include <QSqlQuery>
#include <QtSql>

studentinfo::studentinfo(QWidget *parent)
:QWidget(parent),id2(QObject::tr("用户名"),this),pass(QObject::tr("密码"),this),
name(QObject::tr("姓名"),this),dept(QObject::tr("院系"),this),
input(QObject::tr("增加"),this),change(QObject::tr("修改"),this),
dele(QObject::tr("删除"),this),
idline(this),passline(this),nameline(this),deptline(this)
{
id2.setGeometry(20,20,60,30);
pass.setGeometry(100,20,60,30);
name.setGeometry(180,20,60,30);
dept.setGeometry(260,20,60,30);

idline.setGeometry(20,70,60,30);
passline.setGeometry(100,70,60,30);
nameline.setGeometry(180,70,60,30);
deptline.setGeometry(260,70,60,30);

input.setGeometry(QRect(30,200,100,40));
change.setGeometry(QRect(370,200,100,40));
dele.setGeometry(QRect(200,200,100,40));
connect(&input,SIGNAL(clicked(void)),this,SLOT(input1(void)));
connect(&change,SIGNAL(clicked(void)),this,SLOT(change1(void)));
connect(&dele,SIGNAL(clicked(void)),thi
4000
s,SLOT(dele1(void)));
}

void studentinfo::input1()
{
QString sno=idline.text().trimmed();
QString spass=passline.text().trimmed();
QString sname=nameline.text().trimmed();
QString sdept=deptline.text().trimmed();

QSqlQuery query;
query.prepare("INSERT INTO studentlogin values(:sno,:spass,:sname,:sdept)");
query.bindValue(":sno",sno);
query.bindValue(":spass",spass);
query.bindValue(":sname",sname);
query.bindValue(":sdept",sdept);
query.exec();

QSqlQuery query2;
query2.exec("select * from studentlogin");
QSqlQueryModel *model = new QSqlQueryModel;
model->setQuery(query2);
QTableView *view = new QTableView;
view->setModel(model);
view->show();
}
void studentinfo::change1()
{
QString sno=idline.text().trimmed();
QString spass=passline.text().trimmed();
QString sname=nameline.text().trimmed();
QString sdept=deptline.text().trimmed();

QSqlQuery query;
query.prepare("DELETE from studentlogin where 用户名=:sno");
query.bindValue(":sno",sno);
query.exec();

query.prepare("INSERT INTO studentlogin values(:sno,:spass,:sname,:sdept)");
query.bindValue(":sno",sno);
query.bindValue(":spass",spass);
query.bindValue(":sname",sname);
query.bindValue(":sdept",sdept);
query.exec();

QSqlQuery query2;
query2.exec("select * from studentlogin");
QSqlQueryModel *model = new QSqlQueryModel;
model->setQuery(query2);
QTableView *view = new QTableView;
view->setModel(model);
view->show();
}

void studentinfo::dele1()
{
QString sno=idline.text().trimmed();
QString spass=passline.text().trimmed();
QString sname=nameline.text().trimmed();
QString sdept=deptline.text().trimmed();

QSqlQuery query;
query.prepare("DELETE from studentlogin where 用户名=:sno");
query.bindValue(":sno",sno);
query.exec();

QSqlQuery query2;
query2.exec("select * from studentlogin");
QSqlQueryModel *model = new QSqlQueryModel;
model->setQuery(query2);
QTableView *view = new QTableView;
view->setModel(model);
view->show();
}