FreeImage.GetUniqueColors Method

FreeImage.NET

FreeImage.NET Class Library Reference

FreeImageGetUniqueColors Method

This function returns the number of unique colors actually used by the specified 1-, 4-, 8-, 16-, 24- or 32-bit image. This might be different from what function FreeImage_GetColorsUsed() returns, which actually returns the palette size for palletised images. Works for FIT_BITMAP type images only.

Namespace: FreeImageAPI
Assembly: FreeImageNET (in FreeImageNET.dll) Version: 3.17.0.4 (3.17.0)

Syntax

Copy

public static int GetUniqueColors(
	FIBITMAP dib
)

Parameters

dib: Type: FreeImageAPIFIBITMAP
Handle to a FreeImage bitmap.

Return Value

Type: Int32
Returns the number of unique colors used by the image specified or zero, if the image type cannot be handled.

Exceptions

Exception	Condition
ArgumentNullException	dib is null.

Reference

FreeImage Class

FreeImageAPI Namespace

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