# GraphicsCoders user defined functions Reference

Below is a complete list of the user defined functions available in AutoIt. Click on a user defined function name for a detailed description.

When using them you need to add a #include <GDIPlus.au3>.

User Defined Function | Description
--- | ---
_GDIPlus_Decoders | Get an array of information about the available image decoders
_GDIPlus_DecodersGetCount | Get the number of available image decoders
_GDIPlus_DecodersGetSize | Get the total size of the structure that is returned by _GDIPlus_GetImageDecoders
_GDIPlus_Encoders | Get an array of information about the available image encoders
_GDIPlus_EncodersGetCLSID | Return the encoder CLSID for a specific image file type
_GDIPlus_EncodersGetCount | Get the number of available image encoders
_GDIPlus_EncodersGetParamList | Get the parameter list for a specified image encoder
_GDIPlus_EncodersGetParamListSize | Get the size of the parameter list for a specified image encoder
_GDIPlus_EncodersGetSize | Get the total size of the structure that is returned by _GDIPlus_GetImageEncoders
_GDIPlus_ParamAdd | Add a value to an encoder parameter list
_GDIPlus_ParamInit | Allocate an empty encoder parameter list
_GDIPlus_ParamSize | Get an encoder parameter size