QT学习笔记之十二 ListViewer

这个主要练习项视图的显示并设置了insert和delete功能

 

============================================================

listviewer.h

#ifndef LISTVIEWER_H#define LISTVIEWER_H#include <QtGui/QDialog>class QDialogButtonBox;class QListView;class QStringListModel;namespace Ui{ class ListViewer;}class ListViewer : public QDialog{ Q_OBJECTpublic: ListViewer(const QStringList &itemList,QWidget *parent = 0); ~ListViewer(); QStringList itemList() const;private slots: void insert(); void del();private: Ui::ListViewer *ui; QListView *listView; QDialogButtonBox *buttonBox; QStringListModel *model;};#endif // LISTVIEWER_H

 

 

listviewer.cpp

#include <QtGui>#include "listviewer.h"#include "ui_listviewer.h"ListViewer::ListViewer(const QStringList &itemList,QWidget *parent) : QDialog(parent), ui(new Ui::ListViewer){ ui->setupUi(this); //model model = new QStringListModel(this); model->setStringList(itemList); //listView listView = new QListView; listView->setModel(model); listView->setEditTriggers(QAbstractItemView::AnyKeyPressed | QAbstractItemView::DoubleClicked); //The QAbstractItemView class provides the basic functionality for item view classes. //buttonBox buttonBox = new QDialogButtonBox(); QPushButton *insertButton = buttonBox->addButton(tr("&Insert"),QDialogButtonBox::ActionRole); //ActionRole:Clicking the button causes changes to the elements within the dialog QPushButton *deleteButton = buttonBox->addButton(tr("&Delete"),QDialogButtonBox::ActionRole); buttonBox->addButton(QDialogButtonBox::Ok); buttonBox->addButton(QDialogButtonBox::Cancel); //signals and slots connect(insertButton,SIGNAL(clicked()),this,SLOT(insert())); connect(deleteButton,SIGNAL(clicked()),this,SLOT(del())); connect(buttonBox,SIGNAL(accepted()),this,SLOT(accept())); connect(buttonBox,SIGNAL(rejected()),this,SLOT(reject())); //layout QVBoxLayout *layout = new QVBoxLayout; layout->addWidget(listView); layout->addWidget(buttonBox); setLayout(layout);}ListViewer::~ListViewer(){ delete ui;}QStringList ListViewer::itemList() const{ return model->stringList();}void ListViewer::insert(){ int row = listView->currentIndex().row(); model->insertRows(row, 1); QModelIndex index=model->index(row); //This class is used as an index into item models derived from QAbstractItemModel. //The index is used by item views, delegates, and selection models to locate an item in the model. listView->setCurrentIndex(index); listView->edit(index);}void ListViewer::del(){ model->removeRows(listView->currentIndex().row(),1);}

 

软件截图：