Technical facts

Application type(s)

Desktop application

Operating system(s) or programming environment(s)

Lubuntu 15.04 (vivid)

IDE(s):

Qt Creator 3.1.1

Project type:

GUI application

C++ standard:

C++98

Compiler(s):

G++ 4.9.2

Libraries used:

Qt: version 5.4.1 (32 bit)
STL: GNU ISO C++ Library, version 4.9.2

Qt project file: ./CppQTreeViewExample4/CppQTreeViewExample4.pro


QT       += core gui

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets



TEMPLATE = app



SOURCES += \

    qtdialog.cpp \

    qtmain.cpp



HEADERS  += \

    qtdialog.h



FORMS    += qtdialog.ui

./CppQTreeViewExample4/qtdialog.h


#ifndef QTDIALOG_H

#define QTDIALOG_H



#include <QDialog>



namespace Ui {

  class QtDialog;

}



struct QDirModel;

struct QtMyTreeView;



class QtDialog : public QDialog

{

  Q_OBJECT

  

public:

  explicit QtDialog(QWidget *parent = 0);

  ~QtDialog();



protected:

  void keyPressEvent(QKeyEvent *);

  

private slots:



private:

  Ui::QtDialog *ui;

};



#endif // QTDIALOG_H

./CppQTreeViewExample4/qtdialog.cpp


#include "qtdialog.h"



#include <cassert>



#include <boost/lexical_cast.hpp>



#include <QKeyEvent>

#include <QStandardItemModel>

#include <QDirModel>





#include "ui_qtdialog.h"



QtDialog::QtDialog(QWidget *parent) :

  QDialog(parent),

  ui(new Ui::QtDialog)

{

  ui->setupUi(this);



  QDirModel * const model = new QDirModel;

  model->setSorting(QDir::DirsFirst | QDir::IgnoreCase | QDir::Name);



  QTreeView * const view = ui->treeView;

  view->setModel(model);

  view->header()->setSortIndicator(0, Qt::AscendingOrder);

  view->header()->setSortIndicatorShown(true);

  //view->header()->setClickable(true);



  const QModelIndex index = model->index(QDir::currentPath());

  view->expand(index);

  view->scrollTo(index);

  view->setCurrentIndex(index);

  view->resizeColumnToContents(0);



}



QtDialog::~QtDialog()

{

  delete ui;

}



void QtDialog::keyPressEvent(QKeyEvent * e)

{

  if (e->key() == Qt::Key_Escape) { close(); return; }

}

./CppQTreeViewExample4/qtmain.cpp


#include <QApplication>

#include "qtdialog.h"



int main(int argc, char *argv[])

{

  QApplication a(argc, argv);

  QtDialog w;

  w.show();  

  return a.exec();

}

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(C++) QTreeViewExample4

Technical facts

Qt project file: ./CppQTreeViewExample4/CppQTreeViewExample4.pro

./CppQTreeViewExample4/qtdialog.h

./CppQTreeViewExample4/qtdialog.cpp

./CppQTreeViewExample4/qtmain.cpp