Important Notice

The pages on this site contain documentation for very old MS-DOS software, purely for historical purposes. If you're looking for up-to-date documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.

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The display driver is a dynamic-link library that consist of a set of
graphics functions for a particular display device. These functions
translate device-independent graphics commands from the graphic-device
interface (GDI) into the commands and actions the display device needs to
draw graphics on the screen. The functions also give information to Windows
and Windows applications about color resolution, screen size and resolution,
graphics capabilities, and other advanced features that may be available on
the hardware. Applications use this information to create the desired screen
output.
 
Although Windows requires only a few functions to start, each Windows
application the user starts can potentially use any GDI functions. This
means a display driver should provide as complete support for GDI as
possible.
 
 
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