Member variable XbpBitmap():planes Foundation

Number of bit planes per pixel.

Attribute: READONLY
Data type: Numeric

The :planes instance variable contains the number of bit planes (color levels) that are used to code pixels in the raster image. Generally the value is 1. For a true color bitmap, the value is 3, meaning that a screen dot is formed by 3x8 = 24 bits.

Windows does not support multiple plane bitmaps.


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