Fundamentals of
C⁺⁺

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About this Course

This course is intended for serious computer hobbyists, IT students, and IT professionals. You need Windows and Visual C++ installed.

The free online textbook for this course is Visual C++ 6 Unleashed . Read the Introduction to the book.

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Lesson 6. Working with Device Contexts and GDI Objects

The device context, or DC, is the interface between an application that draws graphics and text on a two-dimensional surface and the device drivers and hardware that render those graphics.

Applications can draw with the same graphics device interface (GDI) functions, regardless of the actual hardware used, to achieve a consistent image to the best capabilities of the device.

The device context also can be interrogated to inform an application of the capabilities and dimensions supported by the device. The device context can use this dimensional information to allow an application to render images in physical coordinate systems, such as inches and millimeters.

Reading Assignments

Read the following sections from your free online textbook:

Device Contexts in MFC

Brushes and Pens

MFC Classes for GDI Operations

Working with Fonts

Creating and Loading Bitmaps

Drawing with Bitmaps

Creating a Device-Independent Bitmap Class

 

Learning Activities

1. Use this search box to refine and expand your understanding of new terms and concepts in the reading assignments.

2. Read the Summary of the lesson.

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