Alan Freedman -- The Computer Language Company - Computer Desktop Encyclopedia
Computer Desktop Encyclopedia
Longest-Running Tech Reference on the Planet

A CDE Definition

You'll love The Computer Desktop Encyclopedia (CDE) for Tech Term of the Day (TTOD)


device context

A data structure in Windows programming that is used to define the attributes of text and images that are output to the screen or printer. The device context (DC) is maintained by GDI. A DC, which is a handle to the structure, is obtained before output is written and released after the elements have been written. See GDI.


(Graphics Device Interface) The traditional programming interface (API) for output in Windows. When an application needs to display or print, it makes a call to a GDI function and sends it the parameters for the object that must be created. GDI in turn "draws" the object by sending commands to the screen and printer drivers, which actually render the images.

GDI+ Enhancements
Starting with Windows XP, GDI+ added textures, gradients, alpha blending, floating point coordinates, support for more graphics formats and new techniques for manipulating groups of graphic elements. See DirectX and device context.

Personal Use Only

Before/After Your Search Term
development systemdevice control character
development tooldevice dependent
devicedevice driver
device adapterdevice enumeration
device addressdevice independent
device administratordevice independent pixel
device agnosticdevice level
Device Association Frameworkdevice level network
Device Baydevice management
device configuration overlayDevice Manager

Terms By Topic
Click any of the following categories for a list of fundamental terms.
Computer Words You Gotta KnowSystem design
Job categoriesUnix/Linux
Interesting stuffPersonal computers
InternetIndustrial Automation/Process Control
Communications & networkingAssociations/Standards organizations
HistoryDesktop publishing
ProgrammingHealthcare IT
System design