人工智能-项目实践-信息管理系统-QT实现的学生信息管理系统，高程大作业

#include "mainwindow.h" #include "ui_mainwindow.h" #include<QDebug> #include <QApplication> #define itemEmpty " " MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui::MainWindow) { ui->setupUi(this); saved = true; //界面 this->setWindowTitle(tr("学生信息管理系统")); //菜单 QMenu *file = menuBar()->addMenu(tr("&文件")); newAction = new QAction(tr("新建..."),this); connect(newAction,SIGNAL(triggered()),this,SLOT(newFile())); file->addAction(newAction); openAction = new QAction(tr("打开..."),this); //openAction->setStatusTip(tr("1234")); connect(openAction,SIGNAL(triggered()),this,SLOT(openFile())); file->addAction(openAction); saveAction = new QAction(tr("保存..."),this); connect(saveAction,SIGNAL(triggered()),this,SLOT(saveFile())); file->addAction(saveAction); QMenu *modify = menuBar()->addMenu(tr("&编辑")); addAction = new QAction(tr("增加一行"),this); connect(addAction,SIGNAL(triggered()),this,SLOT(addModify())); modify->addAction(addAction); QAction*insertUp = new QAction(tr("上方插入一行"),this); connect(insertUp,SIGNAL(triggered()),this,SLOT(insertBefore())); modify->addAction(insertUp); QAction*insertDown = new QAction(tr("下方插入一行"),this); connect(insertDown,SIGNAL(triggered()),this,SLOT(insertAfter())); modify->addAction(insertDown); moveUpAction = new QAction(tr("上移一行"),this); connect(moveUpAction,SIGNAL(triggered()),this,SLOT(moveUpModify())); modify->addAction(moveUpAction); moveDownAction = new QAction(tr("下移一行"),this); connect(moveDownAction,SIGNAL(triggered()),this,SLOT(moveDownModify())); modify->addAction(moveDownAction); deleteAction = new QAction(tr("删除"),this); connect(deleteAction,SIGNAL(triggered()),this,SLOT(deleteModify())); modify->addAction(deleteAction); //QMenu *exit = menuBar()->addMenu(tr("&退出")); //connect(exit,SIGNAL(triggered()),this,SLOT(close())); /* //connect(button, &QPushButton::clicked, someFunction); //QMenu *view = menuBar()->addMenu(tr("&查看")); //sortAction = new QAction(tr("排序"),this); //connect(sortAction,SIGNAL(triggered()),this,SLOT(sortView())); //view->addAction(sortAction); searchAction = new QAction(tr("&搜索"),this); connect(searchAction,SIGNAL(triggered()),this,SLOT(searchView())); view->addAction(searchAction); */ /* QMenu *statistic = menuBar()->addMenu(tr("&统计")); gradeAction = new QAction(tr("年级")); connect(gradeAction,SIGNAL(triggered()),this,SLOT(gradeStatistic())); statistic->addAction(gradeAction); majorAction = new QAction(tr("专业")); connect(majorAction,SIGNAL(triggered()),this,SLOT(majorStatistic())); statistic->addAction(majorAction); gpaAction = new QAction(tr("GPA")); connect(gpaAction,SIGNAL(triggered()),this,SLOT(gpaStatistic())); statistic->addAction(gpaAction); */ QComboBoxList = new QVector<QComboBox*>(); //右键菜单 //表格 widget = new QWidget(); this->setCentralWidget(widget); layout = new QHBoxLayout; table = new QTableWidget(); table->setColumnCount(8); table->setRowCount(0); table->horizontalHeader()->setHighlightSections(false); table->horizontalHeader()->setSectionResizeMode(QHeaderView::Stretch); connect(table,SIGNAL(cellChanged(int,int)),this,SLOT(tableModify(int,int))); QStringList header; header<<tr("姓名")<<tr("性别")<<tr("学号")<<tr("年级")<<tr("专业方向")<<tr("出生日期(年-月-日)")<<(tr("籍贯"))<<(tr("住址")); //table->horizontalHeader()->setDefaultSectionSize(15); connect(table->horizontalHeader(),SIGNAL(sectionClicked(int)),this, SLOT(sortView(int))); table->setHorizontalHeaderLabels(header); //table->setItem(0,0,new QTableWidgetItem("嘤嘤嘤？")); //table->setItem(0,1,new QTableWidgetItem("嘤嘤嘤？")); //table->show(); layout->addWidget(table); widget->setLayout(layout); //工具栏搜索：支持姓名、id两种精确搜索 //QToolBar *toolBar = addToolBar(tr("&搜索")); //toolBar->addAction(searchAction); //layout->addWidget(toolBar); //工具栏搜索：支持专业、GPA、年龄三种模糊搜索 QComboBox*tmp = new QComboBox(); tmp->setEditable(false); table->setItemDelegateForColumn(1,new Delegate(this)); QComboBoxList->push_back(tmp); tmp = new QComboBox(); tmp->setEditable(false); table->setItemDelegateForColumn(4,new Delegate(this)); //setItemIsEditable(ui.table, 0); QComboBoxList->push_back(tmp); //数据库呈现:这里无需呈现，因为刚打开程序，既没有添加也没有读入文件 //后续考虑加入历史纪录，每次打开软件后，自动开打开上一次的文件。这样需要先读一个墓碑文件，之后再读入用户文件，初始化数据库，再修改行数 stuDB = new studentDatabase(); //table->setRowCount(stuDB->getSize()+3); for(int i = 0; i < table->columnCount();i++) c[i] = true; this->resize(QSize(1200,800)); //搜索功能初始化 searchQstr.clear(); searchRow = -1; searchColumn = -1; searchQLineEditToolBar = new QLineEdit; /* searchToolBar = new QAction(tr("&搜索"),this); lastToolBar = new QAction(tr("&上一个"),this); nextToolBar = new QAction(tr("&下一个"),this); */ searchButton = new QPushButton(tr("&搜索")); lastButton = new QPushButton(tr("&上一个"));; nextButton = new QPushButton(tr("&下一个" ""));; //ui->mainToolBar->setVisible(false); ui->mainToolBar->addWidget(searchQLineEditToolBar); ui->mainToolBar->addWidget(searchButton); ui->mainToolBar->addWidget(lastButton); ui->mainToolBar->addWidget(nextButton); connect(searchQLineEditToolBar,SIGNAL(textChanged(QString)),this,SLOT(searchQlineEditChanged(QString))); connect(searchButton,SIGNAL(clicked()),this,SLOT(searchToolBarTriggered())); connect(lastButton,SIGNAL(clicked()),this,SLOT(lastToolBarTriggered())); connect(nextButton,SIGNAL(clicked()),this,SLOT(nextToolBarTriggered())); //ui->mainToolBar->addAction(new QAction(tr("&完成"),this)); //ui->mainToolBar->addWidget(QPushButton(tr("&搜索"))) } void MainWindow::tableInitialize(){ delete table; delete layout; delete QComboBoxList; saved = false; layout = new QHBoxLayout; table = new QTableWidget(); QComboBoxList = new QVector<QComboBox*>(); table->setColumnCount(8); table->setRowCount(0); table->horizontalHeader()->setHighlightSections(false); table->horizontalHeader()->setSectionResizeMode(QHeaderView::Stretch); connect(table,SIGNAL(cellChanged(int,int)),this,SLOT(tableModify(int,int))); QStringList header; header<<tr("姓名")<<tr("性别")<<tr("学号")<<tr("年级")<<tr("专业方向")<<tr("出生日期(年-月-日)")<<(tr("籍贯"))<<(tr("住址"));//<<tr("GPA"); //connect(table->horizontalHeader(),SIGNAL(sectionClicked(int)),this, SLOT(sortView(int))); connect(table->horizontalHeader(),SIGNAL(sectionDoubleClicked(int)),this, SLOT(sortView(int))); //table->horizontalHeader()->setDefaultSectionSize(15); table->setHorizontalHeaderLabels(header); //table->setItem(0,0,new QTableWidgetItem("嘤嘤嘤？")); //table->setItem(0,1,new QTableWidgetItem("嘤嘤嘤？")); //table->show(); layout->addWidget(table); widget->setLayout(layout); for(int i = 0; i < table->columnCount();i++) c[i] = true; } void MainWindow::newFile(){ qDebug()<<"newFile"; if(table->rowCount()>0&&!saved){ QMessageBox msgBox; msgBox.setWindowTitle("请注意！"); msgBox.setText(tr("文件尚未保存！")); msgBox.setInformativeText(tr("是否保存文