Qt with Cascades UI Examples Documentation

FileLoaderProxy.hpp Example File

sharedmemory/src/FileLoaderProxy.hpp
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    #ifndef FILELOADERPROXY_HPP
    #define FILELOADERPROXY_HPP

    #include <QObject>
    #include <QSharedMemory>

    /**
     * The FileLoaderProxy class contains the business logic of this application.
     * It creates a shared memory segment on construction and makes the content
     * of this shared memory available via the 'fileContent' property.
     */
    class FileLoaderProxy : public QObject
    {
        Q_OBJECT

        // The property that makes the file content available to the UI
        Q_PROPERTY(QString fileContent READ fileContent NOTIFY fileContentChanged)

    public:
        FileLoaderProxy(QObject *parent = 0);

        // The accessor method for the file content property
        QString fileContent() const;

    public Q_SLOTS:
        // This method is called when the user clicks the 'Load file' button in the UI
        void loadFile();

    Q_SIGNALS:
        // The change notification signal for the file content property
        void fileContentChanged();

    private:
        // The object that represents the shared memory segment
        mutable QSharedMemory m_sharedMemory;
    };

    #endif