How to use the QCommandLineParser

[IknowQT]

I am trying to create a file tree of tableview using QCommandLineParser.

I've seen the example provided by Qt, but I'm new to QCommandLineParser and I'm not familiar with it, so I'm asking. How can I see only the folder on the D drive instead of the whole directory?

• Example

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);

    QCoreApplication::setApplicationVersion(QT_VERSION_STR);
    QCommandLineParser parser;
    parser.setApplicationDescription("Qt Dir View Example");
    parser.addHelpOption();
    parser.addVersionOption();
    QCommandLineOption dontUseCustomDirectoryIconsOption("c", "Set QFileSystemModel::DontUseCustomDirectoryIcons");
    parser.addOption(dontUseCustomDirectoryIconsOption);
    QCommandLineOption dontWatchOption("w", "Set QFileSystemModel::DontWatch");
    parser.addOption(dontWatchOption);
    parser.addPositionalArgument("directory", "The directory to start in.");
    parser.process(app);
    const QString rootPath = parser.positionalArguments().isEmpty()
        ? QString() : parser.positionalArguments().first();

    QFileSystemModel model;
    model.setRootPath("");
    if (parser.isSet(dontUseCustomDirectoryIconsOption))
        model.setOption(QFileSystemModel::DontUseCustomDirectoryIcons);
    if (parser.isSet(dontWatchOption))
        model.setOption(QFileSystemModel::DontWatchForChanges);
    QTreeView tree;
    tree.setModel(&model);
    if (!rootPath.isEmpty()) {
        const QModelIndex rootIndex = model.index(QDir::cleanPath(rootPath));
        if (rootIndex.isValid())
            tree.setRootIndex(rootIndex);
    }

    // Demonstrating look and feel features
    tree.setAnimated(false);
    tree.setIndentation(40);        // 들여쓰기 위치
    tree.setSortingEnabled(true);   // 정렬 여부
    const QSize availableSize = tree.screen()->availableGeometry().size();
    tree.resize(availableSize / 2);
    tree.setColumnWidth(0, tree.width() / 3);

    // Make it flickable on touchscreens
    QScroller::grabGesture(&tree, QScroller::TouchGesture);

    tree.setWindowTitle(QObject::tr("Dir View"));
    tree.show();

    return app.exec();
}

[IknowQT]

foreach(QFileInfo info, QDir::drives())
	{
		QEventLoop loop;
		QObject::connect(m_pDirModel, &QFileSystemModel::directoryLoaded, &loop, &QEventLoop::quit);
	
		qDebug() << "fileName : " << info.fileName();
		qDebug() << "absoluteFilePath : " << info.absoluteFilePath();
		qDebug() << "filePath : " << info.filePath();
		qDebug() << "absoluteDir : " << info.absoluteDir();
		qDebug() << "absolutePath : " << info.absolutePath();
	
		// 읽을 디렉토리 설정
		m_pDirModel->setRootPath(info.filePath());
		//m_pDirModel->setRootPath("D:/yhJeong_Doc/");
		loop.exec();
	}


this->ui.treeView->setModel(m_pDirModel);
	this->ui.treeView->setRootIndex(m_pDirModel->index("D:/rootTest"));

this->ui.treeView->setRootIndex(m_pDirModel->index("D:/rootTest"));

this->ui.treeView->setRootIndex(m_pDirModel->index("D:/rootTest")); It is solved by setting the path.

[jsulm]

@IknowQT said in How to use the QCommandLineParser:

How can I see only the folder on the D drive instead of the whole directory?

What do you mean and how is this related to QCommandLineParser?
What is "whole directory"? Do you mean all folders on drive D?

[IknowQT]

@jsulm

        m_pDirModel = new usrFileSystemModel(this);
	m_pDirModel->setFilter(QDir::AllDirs | QDir::Drives | QDir::NoDotAndDotDot);

	foreach(QFileInfo info, QDir::drives())
	{
		QEventLoop loop;
		QObject::connect(m_pDirModel, &QFileSystemModel::directoryLoaded, &loop, &QEventLoop::quit);

		// 읽을 디렉토리 설정
		m_pDirModel->setRootPath(info.filePath());
		loop.exec();
	}


	this->ui.treeView->setModel(m_pDirModel);

	// [두번째 이후 모든 컬럼 숨김]
	for (int i = m_pDirModel->columnCount() - 1; i > 0; --i)
		this->ui.treeView->setColumnHidden(i, true);


	// [펼치기/감추기 아이콘 숨김]
	this->ui.treeView->setRootIsDecorated(false);

	// [헤더 없애기]
	this->ui.treeView->setHeaderHidden(true);

	// [폰트 설정]
	this->ui.treeView->setFont(cGlobalParam::gGetUseMultipleFont(13));

	// [행 사이즈 설정] 
	usrItemDelegate* itemdelegate = new usrItemDelegate(this);
	itemdelegate->SetHeight(60);
	this->ui.treeView->setItemDelegate(itemdelegate);

Currently, it shows the entire driver.
What I want is to show only the local folder.

For example, when there is a path called D:/Test/Source, I want to display only the contents in the Source folder. In a folder called Source, there may be folders and may contain files.

[Christian Ehrlicher]

@IknowQT said in How to use the QCommandLineParser:

What I want is to show only the local folder.

The documentation has even an example on how to do so: https://doc.qt.io/qt-5/qfilesystemmodel.html#example-usage

Don't know how this is related the QCommandLineParser though.

[IknowQT]

@Christian-Ehrlicher

m_pDirModel->setRootPath("D:/yhJeong_Doc/");

I did this, but the result is the same.

[JonB]

@IknowQT said in How to use the QCommandLineParser:

m_pDirModel->setRootPath("D:/yhJeong_Doc/");

Since you say earlier

For example, when there is a path called D:/Test/Source, I want to display only the contents in the Source folder

why do you set the root path to D:/yhJeong_Doc/? What do you expect that to do/show?

[IknowQT]

foreach(QFileInfo info, QDir::drives())
	{
		QEventLoop loop;
		QObject::connect(m_pDirModel, &QFileSystemModel::directoryLoaded, &loop, &QEventLoop::quit);
	
		qDebug() << "fileName : " << info.fileName();
		qDebug() << "absoluteFilePath : " << info.absoluteFilePath();
		qDebug() << "filePath : " << info.filePath();
		qDebug() << "absoluteDir : " << info.absoluteDir();
		qDebug() << "absolutePath : " << info.absolutePath();
	
		// 읽을 디렉토리 설정
		m_pDirModel->setRootPath(info.filePath());
		//m_pDirModel->setRootPath("D:/yhJeong_Doc/");
		loop.exec();
	}


this->ui.treeView->setModel(m_pDirModel);
	this->ui.treeView->setRootIndex(m_pDirModel->index("D:/rootTest"));

this->ui.treeView->setRootIndex(m_pDirModel->index("D:/rootTest"));

this->ui.treeView->setRootIndex(m_pDirModel->index("D:/rootTest")); It is solved by setting the path.