(C++) QTreeViewExample4

 

 

QTreeView example 4: directory view is an example to use a QTreeView.

 

• View a screenshot of 'CppQTreeViewExample4' (png)
• Download the Qt Creator project 'CppQTreeViewExample4' (zip)

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

 

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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

 

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#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

 

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#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

 

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