main

#include
#include
#include
#include"stringlistmodel.h"int main(int argc, char *argv[])
{QApplication app(argc,argv);QStringList list;list << QString("太阳") << QString("月亮")<< QString("火星") << QString("木星");stringListModel model(list);//创建模型model.insertRows(0,2);model.removeRows(2,1);QListView listView;//创建列表视图listView.setModel(&model);//视图设置模型listView.show();//视图显示QTableView tableView;//创建表格视图tableView.setModel(&model);//视图设置模型tableView.show();//视图显示return app.exec();
}

5\选择模型与自定义委托

MainWindow.h

#ifndef MAINWINDOW_H
#define MAINWINDOW_H
#include
#include 
#include
#includenamespace Ui {
class MainWindow;
}class MainWindow : public QMainWindow
{Q_OBJECTpublic:MainWindow(QWidget *parent = nullptr);~MainWindow();public slots:void getCurrentItemData();//当前选择void toggleSection();//切换选择//更新选择,selected表新的选择,deselected表以前的选择void updateSelection(const QItemSelection &selected,const QItemSelection &deselected);//改变当前模型索引void changeCurrent(const QModelIndex ¤t,const QModelIndex &previous);
private:Ui::MainWindow *ui;QTableView *m_tableView;QTableView *m_tableView2;
};#endif // MAINWINDOW_H

MainWindow.cpp

#include "mainwindow.h"
#include "ui_mainwindow.h"
#include
#include
#include
#include MainWindow::MainWindow(QWidget *parent) :QMainWindow(parent),ui(new Ui::MainWindow)
{ui->setupUi(this);//创建标准模型项,7行4列QStandardItemModel *model = new QStandardItemModel(7,4,this);for(int row = 0; row < 7; ++row )for(int column = 0; column < 4; ++column ){QStandardItem *item = new QStandardItem(QString("%1").arg(row * 4 + column));//标准模型项设置数据项model->setItem(row,column,item);}m_tableView = new QTableView;m_tableView->setModel(model);setCentralWidget(m_tableView);//设置主窗口中心部件为表格视图//获取视图的选择模式QItemSelectionModel *selectionModel = m_tableView->selectionModel();QModelIndex topLeft;//左上角模型索引QModelIndex bottomRight;//右下角模型索引topLeft = model->index(1,1);bottomRight = model->index(5,2);//创建模型选择QItemSelection selection(topLeft,bottomRight);//以选择的方式来选择项目selectionModel->select(selection,QItemSelectionModel::Select);//添加动作Action(动作文本,响应者,槽方法)
//    ui->menuBar->addAction(QString("当前项目"),this,&MainWindow::getCurrentItemData);
//    ui->menuBar->addAction(QString("切换选择"),this,&MainWindow::toggleSection);//6.9.6版本,QAction *action1 = ui->menuBar->addAction(QString("当前项目"));QAction *action2 = ui->menuBar->addAction(QString("切换选择"));connect(action1,&QAction::triggered,this,&MainWindow::getCurrentItemData);connect(action2,&QAction::triggered,this,&MainWindow::toggleSection);//关联选择模型的选择改变,当前项改变信号connect(selectionModel,&QItemSelectionModel::selectionChanged,this,&MainWindow::updateSelection);connect(selectionModel,&QItemSelectionModel::currentChanged,this,&MainWindow::changeCurrent);m_tableView2 = new QTableView;m_tableView2->setWindowTitle("tableView2");m_tableView2->resize(600,400);m_tableView2->setModel(model);m_tableView2->setSelectionModel(selectionModel);m_tableView2->show();//自定义委托spinboxDelegate *dategate = new spinboxDelegate(this);m_tableView->setItemDelegate(dategate );
}MainWindow::~MainWindow()
{delete ui;delete m_tableView2;
}void MainWindow::getCurrentItemData()
{qDebug() << QString("当前数据: ")<selectionModel()->currentIndex().data().toString();
}void MainWindow::toggleSection()
{//左上角模型索引QModelIndex topLeft = m_tableView->model()->index(0,0,QModelIndex());//右下角模型索引QModelIndex bottomRight = m_tableView->model()->index(m_tableView->model()->rowCount(QModelIndex())-1,m_tableView->model()->columnCount(QModelIndex())-1,QModelIndex());//项选择QItemSelection curSelection(topLeft,bottomRight);m_tableView->selectionModel()->select(curSelection,QItemSelectionModel::Toggle);
}void MainWindow::updateSelection(const QItemSelection &selected, const QItemSelection &deselected)
{QModelIndex index;//indexes()返回所有选择项的模型QModelIndexList list = selected.indexes();//给选择项填充数据foreach (index, list) {QString text = QString("%1,%2").arg(index.row()).arg(index.column());m_tableView->model()->setData(index,text);}//清空上一次的内容list = deselected.indexes();foreach (index, list) {m_tableView->model()->setData(index,"");}
}void MainWindow::changeCurrent(const QModelIndex ¤t, const QModelIndex &previous)
{qDebug() << QString("从(%1,%2)到(%3,%4)").arg(previous.row()).arg(previous.column()).arg(current.row()).arg(current.column());
}

spinboxDelegate.h

#ifndef SPINBOXDELEGATE_H
#define SPINBOXDELEGATE_H
#includeclass spinboxDelegate : public QItemDelegate
{Q_OBJECT
public:spinboxDelegate(QObject *parent = 0);//创建编辑器QWidget *createEditor(QWidget *parent, const QStyleOptionViewItem &option,const QModelIndex &index) const override;//设置编辑器数据void setEditorData(QWidget *editor,const QModelIndex &index) const override;//更新编辑器几何属性void updateEditorGeometry(QWidget *editor,const QStyleOptionViewItem &option,const QModelIndex &index) const override;
};#endif // SPINBOXDELEGATE_H

spinboxDelegate.cpp

#include "spinboxdelegate.h"
#includespinboxDelegate::spinboxDelegate(QObject *parent):QItemDelegate(parent)
{}QWidget *spinboxDelegate::createEditor(QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index) const
{QSpinBox *editor = new QSpinBox(parent);editor->setMinimum(0);editor->setMaximum(100);return editor;
}void spinboxDelegate::setEditorData(QWidget *editor, const QModelIndex &index) const
{int value = index.model()->data(index,Qt::EditRole).toInt();//类型转化QWidget转QSpinBoxQSpinBox *spinBox = static_cast(editor);//编辑器设置数据spinBox->setValue(value);
}void spinboxDelegate::updateEditorGeometry(QWidget *editor, const QStyleOptionViewItem &option, const QModelIndex &index) const
{editor->setGeometry(option.rect);
}