学生类

MainWindow::on_pushButton_clicked()

{studentInfo

file(QApplication::applicationDirPath()/student.st);

//定义文件路径file.open(QIODevice::WriteOnly);

out(file);

//定义数据流student.idui-m_Id-text();student.ageui-m_Age-text();student.nameui-m_Name-text();list.append(student);outlist;qDebug()list[0].id;file.close();qDebug()(QString(OK));ReShowCombox();

void

对象if(list.size()0){ui-comboBox-addItem(list.last().name);}

}反序列化函数

file(QApplication::applicationDirPath()/student.st);//文件在程序运行目录下if(file.exists())//如果文件存在,则从文件读取数据{file.open(QIODevice::ReadOnly);QDataStream

in(file);inlist;file.close();}//

studentInfo

对象if(list.size()0){student.idlist.at(0).id;student.agelist.at(0).age;student.namelist.at(0).name;ui-m_Id-setText(student.id);ui-m_Age-setText(student.age);ui-m_Name-setText(student.name);for(int

i0;ilist.size();i){ui-comboBox-addItem(list.at(i).name);}}}刷新所选择的下拉表值

连接信号与槽函数

QOverloadint::of(QComboBox::currentIndexChanged),

this,

MainWindow::on_comboBox_currentIndexChanged);获取到当前的值

void

MainWindow::on_comboBox_currentIndexChanged(int

index)

刷新其他控件的值ui-m_Id-setText(student.id);ui-m_Name-setText(student.name);ui-m_Age-setText(student.age);}

}添加

MainWindow::on_pushButton_2_clicked()

{ui-m_Id-setText();ui-m_Name-setText();ui-m_Age-setText();}