QT例程，有QQ界面，计算器，学生管理系统，秒表，打地鼠，包含源码和exe程序

#include "querystu.h" #include "ui_querystu.h" #include <QMessageBox> #include <QDebug> #include <QStringList> queryStu::queryStu(QWidget *parent) : QDialog(parent), ui(new Ui::queryStu) { ui->setupUi(this); if(readFromFile() == -1) { this->close(); QMessageBox::critical(this,"严重错误","文件打开失败，请重试","确定"); } this->model = new QStandardItemModel; setTitle(); this->ui->tableView->setModel(model); } queryStu::~queryStu() { delete ui; } int queryStu::readFromFile() { QFile file("stu.txt"); if(!file.open(QIODevice::ReadOnly | QIODevice::Text)) { return -1; } QTextStream in(&file); while(!in.atEnd()) { QString line = in.readLine(); stu_lines.append(line); } file.close(); for(int i = 0;i < stu_lines.length();i++) { qDebug() << stu_lines.at(i).trimmed();; } return 0; } void queryStu::on_btn_search_clicked() { this->model->clear(); setTitle(); int index = this->ui->cbb_method->currentIndex(); QString cnt = this->ui->le_cnt->text(); doQuery(index,cnt); } void queryStu::doQuery(int index,QString cnt) { int row = 0; for(int i = 0; i < stu_lines.length(); i++) { QString line = stu_lines.at(i); line = line.trimmed(); QStringList subs = line.split(" "); switch(index) { case 1: if(cnt == subs.at(0)) { disPlay(row++,subs); } break; case 2: if(cnt == subs.at(1)) { disPlay(row++,subs); } break; case 3: if(cnt == subs.at(4)) { disPlay(row++,subs); } break; default: break; } } } void queryStu::disPlay(int row,QStringList subs) { int i = 0; for(i = 0; i < 5; i++) { this->model->setItem(row,i,new QStandardItem(subs.at(i))); } QString ins; for(i = 5; i < subs.length(); i++) { ins += subs.at(i) + ','; } this->model->setItem(row,5,new QStandardItem(ins)); } void queryStu::setTitle() { this->model->setHorizontalHeaderItem(0,new QStandardItem("姓名")); this->model->setHorizontalHeaderItem(1,new QStandardItem("学号")); this->model->setHorizontalHeaderItem(2,new QStandardItem("性别")); this->model->setHorizontalHeaderItem(3,new QStandardItem("年龄")); this->model->setHorizontalHeaderItem(4,new QStandardItem("院系")); this->model->setHorizontalHeaderItem(5,new QStandardItem("兴趣")); this->ui->tableView->setColumnWidth(0,100); this->ui->tableView->setColumnWidth(1,150); this->ui->tableView->setColumnWidth(2,50); this->ui->tableView->setColumnWidth(3,50); this->ui->tableView->setColumnWidth(4,100); this->ui->tableView->setColumnWidth(5,150); }