October 2003
Intermediate to advanced
784 pages
14h 21m
English
Content preview from Graphics Programming with GDI+
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5.2. Working with Colors
In this section we will examine color representation in GDI+ and how to use color-related functionality in real-world applications.
In GDI+, a color is represented by a 32-bit structure made up of four components: alpha (A), red (R), green (G), and blue (B), referred to as ARGB mode. Components’ values range from 0 to 255. The alpha component (the first 8 bits) of the color represents transparency, which determines how a color is blended with the background. An alpha value of 0 represents a fully transparent color, and a value of 255 represents a fully opaque color; intermediate values produce results between these extremes. Real-world examples of alpha use include drawing translucent graphics shapes and images. Chapter ...
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