Conventions used

There are a number of text conventions used throughout this book.

CodeInText: Indicates code words in text, class or type names. Here is an example: "The Qt project file, ImageViewer.pro, should be renamed ImageEditor.pro. You can do this in your file manager or in a Terminal."

A block of code is set as follows:

         QMenu *editMenu;
         QToolBar *editToolBar;
         QAction *blurAction;

When we wish to draw your attention to a particular part of a code block, a comment will be appended to end of the lines:

         // for editting
         void blurImage();

Any command-line input or output is written as follows:

    $ mkdir Chapter-02
    $ cp -r Chapter-01/ImageViewer/ Chapter-02/ImageEditor
    $ ls Chapter-02
    ImageEditor
    $ cd Chapter-02/ImageEditor
    $ make clean
    $ rm -f ImageViewer

The $ symbol is the shell prompt, and the text after it is a command. The lines that don't start with a $ are the output of the preceding command.