Qt/ModelView/ItemSelectionModel

main.cpp

#include <QApplication>
 
#include "form.h"
 
int main(int argc, char *argv[])
{
  QApplication app(argc, argv);
  Form form;
 
  form.show();
  return app.exec();
}

form.h

#ifndef FORM_H
#define FORM_H
 
#include "ui_form.h"
 
#include <QMainWindow>
 
class QStringList;
class QStringListModel;
class QItemSelectionModel;
 
class Form : public QMainWindow, private Ui::MainWindow
{
  Q_OBJECT
 
public:
  Form(QWidget *parent = 0);
 
public slots:
  void slot_selectionChanged (const QItemSelection  &selected, const QItemSelection  &deselected );
 
protected:
  QStringListModel* Model;
  QItemSelectionModel* SelectionModel;
  QStringList* StringList;
};
 
#endif

form.cpp

#include <QtGui>
 
#include <iostream>
 
#include "form.h"
 
#include <QItemSelectionModel>
#include <QStringListModel>
 
Form::Form(QWidget *parent) : QMainWindow(parent)
{
  setupUi(this);
  std::cout << "Current path: " << QDir::currentPath().toStdString() << std::endl;
 
  //this->StringList = new QStringList("a" << "b" << "c");
  //this->StringList = new QStringList("a", "b", "c");
  this->StringList = new QStringList;
  *(this->StringList) << "a";
  *(this->StringList) << "b";
  *(this->StringList) << "c";
 
  this->Model = new QStringListModel;
  this->Model->setStringList(*this->StringList);
  this->listView->setModel(this->Model);
 
  this->SelectionModel = new QItemSelectionModel(this->Model);
  this->listView->setSelectionModel(this->SelectionModel);
 
  connect(this->SelectionModel, SIGNAL(selectionChanged (const QItemSelection&, const QItemSelection&)),
          this, SLOT(slot_selectionChanged(QItemSelection,QItemSelection)));
}
 
void Form::slot_selectionChanged (const QItemSelection  &selected, const QItemSelection  &deselected )
{
  for(unsigned int i = 0; i < selected.indexes().size(); ++i)
    {
    std::cout << selected.at(i).topLeft().row() << " ";
    }
  std::cout << std::endl;
}

form.ui

<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
 <class>MainWindow</class>
 <widget class="QMainWindow" name="MainWindow">
  <property name="geometry">
   <rect>
    <x>0</x>
    <y>0</y>
    <width>202</width>
    <height>248</height>
   </rect>
  </property>
  <property name="windowTitle">
   <string>MainWindow</string>
  </property>
  <widget class="QWidget" name="centralwidget">
   <layout class="QVBoxLayout" name="verticalLayout">
    <item>
     <widget class="QListView" name="listView"/>
    </item>
   </layout>
  </widget>
  <widget class="QMenuBar" name="menubar">
   <property name="geometry">
    <rect>
     <x>0</x>
     <y>0</y>
     <width>202</width>
     <height>20</height>
    </rect>
   </property>
   <widget class="QMenu" name="menuFile">
    <property name="title">
     <string>File</string>
    </property>
    <addaction name="actionSave"/>
   </widget>
   <addaction name="menuFile"/>
  </widget>
  <widget class="QStatusBar" name="statusBar"/>
  <action name="actionSave">
   <property name="text">
    <string>Save</string>
   </property>
  </action>
 </widget>
 <resources/>
 <connections/>
</ui>

CMakeLists.txt

cmake_minimum_required(VERSION 2.6)
 
PROJECT(ItemSelectionModel)
 
FIND_PACKAGE(Qt4 REQUIRED)
INCLUDE(${QT_USE_FILE})
 
QT4_WRAP_UI(ItemSelectionModel_UI form.ui)
QT4_WRAP_CPP(ItemSelectionModel_MOC form.h)
 
include_directories(${include_directories} ${CMAKE_CURRENT_SOURCE_DIR} ${CMAKE_CURRENT_BINARY_DIR})
 
ADD_EXECUTABLE(ItemSelectionModel main.cpp form.h form.cpp ${ItemSelectionModel_UI} ${ItemSelectionModel_MOC})
TARGET_LINK_LIBRARIES(ItemSelectionModel ${QT_LIBRARIES})