程序運行截圖如下：

代碼如下：

widget.h

#ifndef WIDGET_H #define WIDGET_H#include <QWidget>class QSortFilterProxyModel; class QDataWidgetMapper; class QStandardItemModel;namespace Ui { class Widget; }class Widget : public QWidget {Q_OBJECTpublic:explicit Widget(QWidget *parent = 0);~Widget();void onTableViewClicked(const QModelIndex &index);void filterBtnClicked();void upBtnClicked();void downBtnClicked();private:Ui::Widget *ui;QSortFilterProxyModel *filterModel;QDataWidgetMapper *mapper;QStandardItemModel *model; };#endif // WIDGET_H

widget.cpp

#include "widget.h" #include "ui_widget.h" #include <QStandardItemModel> #include <QDebug> #include <QSortFilterProxyModel> #include <QDataWidgetMapper>Widget::Widget(QWidget *parent) :QWidget(parent),ui(new Ui::Widget) {ui->setupUi(this);this->setWindowTitle("CSDN IT1995");connect(ui->filterPushButton,&QPushButton::clicked,this,&Widget::filterBtnClicked);connect(ui->upPushButton,&QPushButton::clicked,this,&Widget::upBtnClicked);connect(ui->downPushButton,&QPushButton::clicked,this,&Widget::downBtnClicked);model=new QStandardItemModel(4,2,this);model->setItem(0,0,new QStandardItem("球球"));model->setItem(0,1,new QStandardItem("99"));model->setItem(1,0,new QStandardItem("豬小明"));model->setItem(1,1,new QStandardItem("59"));model->setItem(2,0,new QStandardItem("鍋蓋"));model->setItem(2,1,new QStandardItem("111"));model->setItem(3,0,new QStandardItem("閏土"));model->setItem(3,1,new QStandardItem("999"));model->setHorizontalHeaderItem(0,new QStandardItem("姓名"));model->setHorizontalHeaderItem(1,new QStandardItem("成績"));filterModel=new QSortFilterProxyModel(this);filterModel->setSourceModel(model);ui->tableView->setModel(filterModel);mapper=new QDataWidgetMapper(this);mapper->setModel(model);mapper->addMapping(ui->nameLineEdit,0);mapper->addMapping(ui->scoreLineEdit,1);mapper->toFirst(); }Widget::~Widget() {delete ui; }void Widget::onTableViewClicked(const QModelIndex &index) {Q_UNUSED(index) }void Widget::filterBtnClicked() {QRegExp rx(ui->filterLineEdit->text());filterModel->setFilterRegExp(rx); }void Widget::upBtnClicked() {mapper->toPrevious(); }void Widget::downBtnClicked() {mapper->toNext(); }

main.cpp

#include "widget.h" #include <QApplication>int main(int argc, char *argv[]) {QApplication a(argc, argv);Widget w;w.show();return a.exec(); }

總結

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