主要为 :添加、插入、修改、删除、清空等操作
例子:本例子中QListView 没有做任何处理,只是拖放至ui文件,设置了布局
MainWindow.h
#ifndef MAINWINDOW_H
#define MAINWINDOW_H
#include <QMainWindow>
#include <QStringListModel>
QT_BEGIN_NAMESPACE
namespace Ui { class MainWindow; }
QT_END_NAMESPACE
class MainWindow : public QMainWindow
{
Q_OBJECT
public:
MainWindow(QWidget *parent = nullptr);
~MainWindow();
private slots:
void on_btnRecovery_clicked();
void on_listView_clicked(const QModelIndex &index);
void on_btnClearText_clicked();
void on_btnShowModel_clicked();
void on_btnAdd_clicked();
void on_btnInsert_clicked();
void on_btnDel_clicked();
void on_btnClear_clicked();
private:
Ui::MainWindow *ui;
QStringListModel *model;
};
#endif // MAINWINDOW_H
MainWindow.cpp
#include "mainwindow.h"
#include "ui_mainwindow.h"
MainWindow::MainWindow(QWidget *parent)
: QMainWindow(parent)
, ui(new Ui::MainWindow)
{
ui->setupUi(this);
model = new QStringListModel(this);
QStringList list;
list << "1" << "2" << "3";
model->setStringList(list); //为model设置数据
ui->listView->setModel(model);//为界面绑定model
ui->listView->setEditTriggers(QAbstractItemView::DoubleClicked | QAbstractItemView::SelectedClicked);//设置触发编辑的操作
}
MainWindow::~MainWindow()
{
delete ui;
}
/**
* @brief MainWindow::on_btnRecovery_clicked 恢复
*/
void MainWindow::on_btnRecovery_clicked()
{
QStringList list;
list << "1" << "2" << "3";
model->setStringList(list);
}
/**
* @brief MainWindow::on_listView_clicked 选择之后,为状态栏赋值
* @param index
*/
void MainWindow::on_listView_clicked(const QModelIndex &index)
{
QString str = QString("第 %1 行,第 %2 列").arg(index.row() + 1).arg(index.column() + 1);
ui->statusbar->showMessage(str);
}
/**
* @brief MainWindow::on_btnClearText_clicked 文本框清空
*/
void MainWindow::on_btnClearText_clicked()
{
ui->plainTextEdit->clear();
}
/**
* @brief MainWindow::on_btnShowModel_clicked 显示消息模型中的QStringList
*/
void MainWindow::on_btnShowModel_clicked()
{
ui->plainTextEdit->clear();
foreach (QString item, model->stringList()) {
ui->plainTextEdit->appendPlainText(item);
}
}
/**
* @brief MainWindow::on_btnAdd_clicked 最后一行添加
*/
void MainWindow::on_btnAdd_clicked()
{
model->insertRow(model->rowCount());
QModelIndex index = model->index(model->rowCount() - 1, 0);
model->setData(index, "new item", Qt::DisplayRole);
ui->listView->setCurrentIndex(index);
QString str = QString("第 %1 行,第 %2 列").arg(index.row() + 1).arg(index.column() + 1);
ui->statusbar->showMessage(str);
}
/**
* @brief MainWindow::on_btnInsert_clicked 指定行插入
*/
void MainWindow::on_btnInsert_clicked()
{
QModelIndex index = ui->listView->currentIndex();
model->insertRow(index.row());
model->setData(index, "new item", Qt::DisplayRole);
}
/**
* @brief MainWindow::on_btnDel_clicked 删除一行
*/
void MainWindow::on_btnDel_clicked()
{
QModelIndex index = ui->listView->currentIndex();
model->removeRow(index.row());
}
/**
* @brief MainWindow::on_btnClear_clicked 清空model
*/
void MainWindow::on_btnClear_clicked()
{
model->removeRows(0, model->rowCount());
}
界面