Find Files Example▲

The Find Files application allows the user to search for files in a specified directory, matching a given file name or wildcard, and containing a specified string (if filled in). The search result is displayed in a table containing the names of the files and their sizes. The application also shows the number of files found.

The Find Files example illustrates the use of several classes:

QProgressDialog

Provide feedback on the progress of a search operation

QFileDialog

Browse through a file list

QTextStream

Use stream operators to read a file

QTableWidget

Browse through the search results in a table

QDesktopServices

Open files in the result list in a suitable application
Screenshot of the Find Files example

Window Class Definition▲

The Window class inherits QWidget, and is the main application widget. It shows the search options and displays the search results.

 
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class Window : public QWidget
{
    Q_OBJECT

public:
    Window(QWidget *parent = nullptr);

private slots:
    void browse();
    void find();
    void animateFindClick();
    void openFileOfItem(int row, int column);
    void contextMenu(const QPoint &pos);

private:
    QStringList findFiles(const QStringList &files, const QString &text);
    void showFiles(const QStringList &paths);
    QComboBox *createComboBox(const QString &text = QString());
    void createFilesTable();

    QComboBox *fileComboBox;
    QComboBox *textComboBox;
    QComboBox *directoryComboBox;
    QLabel *filesFoundLabel;
    QPushButton *findButton;
    QTableWidget *filesTable;

    QDir currentDir;
};

The application has two private slots:

The browse() slot

Called whenever the user wants to browse for a directory to search in

The find() slot

Called whenever the user launches a search with the Find button

In addition we declare several private functions:

findFiles()

Search for files matching the search parameters

showFiles()

Display the search result

ceateButton()

Construct the widget

createComboBox()

Construct the widget

createFilesTable()

Construct the widget

Window Class Implementation▲

In the constructor we first create the application's widgets.

 
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Window::Window(QWidget *parent)
    : QWidget(parent)
{
    setWindowTitle(tr("Find Files"));
    QPushButton *browseButton = new QPushButton(tr("&Browse..."), this);
    connect(browseButton, &QAbstractButton::clicked, this, &Window::browse);
    findButton = new QPushButton(tr("&Find"), this);