May 2014
Beginner
960 pages
26h 46m
English
Content preview from Ivor Horton's Beginning Visual C++ 2013
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Chapter 17Storing and Printing Documents
- How serialization works
- How to make objects of a class serializable
- The role of a
CArchiveobject in serialization - How to implement serialization in your own classes
- How to implement serialization in the Sketcher application
- How printing works with MFC
- Which view class functions support printing
- What a
CPrintInfoobject contains and how it’s used in the printing process - How to implement multipage printing in Sketcher
You can find the wrox.com code downloads for this chapter on the Download Code tab at www.wrox.com/go/beginningvisualc. The code is in the Chapter 17 download and individually named according to the names throughout the chapter.
UNDERSTANDING SERIALIZATION
A document in an MFC-based program is not a simple entity — it’s a class object that can be very complicated. It typically contains a variety of objects, each of which may contain other objects, each of which may contain still more objects and that structure may continue for a number of levels.
You want to be able to save a document in a file, but writing a class object to a file represents something of a problem because it isn’t the same as a basic data item like an integer or a character string. A basic data item consists of a known number of bytes, so to write it to a file only requires that the appropriate number of bytes be written. Conversely, if you know a value of type int was written ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.