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Graphic Modes
Windows supports five graphic modes that allow an application to specify how
colors are mixed, where output appears, how the output is scaled, and so on.
These modes, which are stored in a device context, are described in the following
table.
Mode
| Description
| Background mode
| Defines how background colors are mixed with existing window or screen colors
for bitmap and text operations.
| Drawing mode
| Defines how foreground colors are mixed with existing window or screen colors
for pen, brush, bitmap, and text operations.
| Mapping mode
| Defines how graphics output is mapped from logical (or world) space onto the
window, screen, or printer paper.
| Polygon-fill mode
| Defines how the brush pattern is used to fill the interior of complex regions.
| Stretching mode
| Defines how bitmap colors are mixed with existing window or screen colors when
the bitmap is compressed (or scaled down).
|
As it does with graphic objects, Windows initializes a device context with
default graphic modes. An application can retrieve and examine these default modes
by calling the following functions.
An application can change the default modes by calling one of the following
functions.
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