C/C++ Qt 数据库与TreeView组件绑定详解
#include "mainwindow.h"
#include "ui_mainwindow.h"
#include
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// 定义数据模型指针
QSqlQueryModel *qryModel; // 数据模型
QItemSelectionModel *theSelection; // 选择模型
QDataWidgetMapper *dataMapper; // 数据界面映射
MainWindow::MainWindow(QWidget *parent) :QMainWindow(parent),ui(new Ui::MainWindow)
{
ui->setupUi(this);
QSqlDatabase db = QSqlDatabase::addDatabase("QSQLITE");
db.setDatabaseName("http://www.jb51.net/article/lyshark.db");
if (!db.open())
{
std::cout << db.lastError().text().toStdString()<< std::endl;
return;
}
// 查询数据表中记录
qryModel=new QSqlQueryModel(this);
qryModel->setQuery("SELECT * FROM LyShark ORDER BY id");
if (qryModel->lastError().isValid())
{
return;
}
// 设置TableView表头数据
qryModel->setHeaderData(0,Qt::Horizontal,"ID");
qryModel->setHeaderData(1,Qt::Horizontal,"Name");
qryModel->setHeaderData(2,Qt::Horizontal,"Age");
// 将数据绑定到模型上
theSelection=new QItemSelectionModel(qryModel);
ui->treeView->setModel(qryModel);
ui->treeView->setSelectionModel(theSelection);
ui->treeView->setSelectionBehavior(QAbstractItemView::SelectRows);
}
MainWindow::~MainWindow()
{
delete ui;
}