PixelFormat Enum

Definition

Namespace:

System.Drawing.Imaging

Assembly:

System.Drawing.Common.dll

Specifies the format of the color data for each pixel in the image.

public enum class PixelFormat

public enum PixelFormat

type PixelFormat = 

Public Enum PixelFormat

Inheritance

Object

ValueType

Enum

PixelFormat

Fields

Name	Value	Description
DontCare	0	No pixel format is specified.
Undefined	0	The pixel format is undefined.
Max	15	The maximum value for this enumeration.
Indexed	65536	The pixel data contains color-indexed values, which means the values are an index to colors in the system color table, as opposed to individual color values.
Gdi	131072	The pixel data contains GDI colors.
Format16bppRgb555	135173	Specifies that the format is 16 bits per pixel; 5 bits each are used for the red, green, and blue components. The remaining bit is not used.
Format16bppRgb565	135174	Specifies that the format is 16 bits per pixel; 5 bits are used for the red component, 6 bits are used for the green component, and 5 bits are used for the blue component.
Format24bppRgb	137224	Specifies that the format is 24 bits per pixel; 8 bits each are used for the red, green, and blue components.
Format32bppRgb	139273	Specifies that the format is 32 bits per pixel; 8 bits each are used for the red, green, and blue components. The remaining 8 bits are not used.
Format1bppIndexed	196865	Specifies that the pixel format is 1 bit per pixel and that it uses indexed color. The color table therefore has two colors in it.
Format4bppIndexed	197634	Specifies that the format is 4 bits per pixel, indexed.
Format8bppIndexed	198659	Specifies that the format is 8 bits per pixel, indexed. The color table therefore has 256 colors in it.
Alpha	262144	The pixel data contains alpha values that are not premultiplied.
Format16bppArgb1555	397319	The pixel format is 16 bits per pixel. The color information specifies 32,768 shades of color, of which 5 bits are red, 5 bits are green, 5 bits are blue, and 1 bit is alpha.
PAlpha	524288	The pixel format contains premultiplied alpha values.
Format32bppPArgb	925707	Specifies that the format is 32 bits per pixel; 8 bits each are used for the alpha, red, green, and blue components. The red, green, and blue components are premultiplied, according to the alpha component.
Extended	1048576	Reserved.
Format16bppGrayScale	1052676	The pixel format is 16 bits per pixel. The color information specifies 65536 shades of gray.
Format48bppRgb	1060876	Specifies that the format is 48 bits per pixel; 16 bits each are used for the red, green, and blue components.
Format64bppPArgb	1851406	Specifies that the format is 64 bits per pixel; 16 bits each are used for the alpha, red, green, and blue components. The red, green, and blue components are premultiplied according to the alpha component.
Canonical	2097152	The default pixel format of 32 bits per pixel. The format specifies 24-bit color depth and an 8-bit alpha channel.
Format32bppArgb	2498570	Specifies that the format is 32 bits per pixel; 8 bits each are used for the alpha, red, green, and blue components.
Format64bppArgb	3424269	Specifies that the format is 64 bits per pixel; 16 bits each are used for the alpha, red, green, and blue components.

Remarks

The pixel format defines the number of bits of memory associated with one pixel of data. The format also defines the order of the color components within a single pixel of data.

PixelFormat48bppRGB, PixelFormat64bppARGB, and PixelFormat64bppPARGB use 16 bits per color component (channel). GDI+ version 1.0 and 1.1 can read 16-bits-per-channel images, but such images are converted to an 8-bits-per-channel format for processing, displaying, and saving. Each 16-bit color channel can hold a value in the range 0 through 2^13.

Some of the pixel formats contain premultiplied color values. Premultiplied means that the color values have already been multiplied by an alpha value.