Text i/o Using Device Contexts

  • Ian Chivers
Part of the Essential Series book series (ES)


This chapter looks at text i/o. We also look at device contexts. A device context is a structure that defines a set of graphic objects and their associated attributes, and the graphic modes that affect output. The graphic objects include:
  • A pen for line drawing.

  • A brush for painting and filling.

  • A bitmap for copying or scrolling parts of the screen.

  • A palette for defining the set of available colours.

  • A region for clipping and other operations.

  • A path for painting and drawing operations.


Logical Unit Graphic Object Member Function Point Size Drawing Operation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag London Limited 2000

Authors and Affiliations

  • Ian Chivers
    • 1
  1. 1.LondonUK

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