---
name: "Trf_SetObjOption"
section: "3"
platform: "linux"
package: "tcl-trf-doc"
version: "2.1.4-dfsg3-8"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/Trf_SetObjOption"
---

# Trf\_SetObjOption(3)

Interface to procedures to define the value of an option.

## NAME

Trf\_SetObjOption - Interface to procedures to define the value of an option.

## SYNOPSIS

**#include \<transform.h\>**

**int Trf\_SetObjOption**\
 **(**\
\
 	**Trf\_Options options,**\
\
 	**Tcl\_Interp \*interp,**\
\
 	**const char \*optname,**\
\
 	**const Tcl\_Obj \*optvalue,**\
\
 	**ClientData clientData**\
 **);**

## PARAMETERS

- **Trf\_Options options**

  Container to place the value into.

- **Tcl\_Interp \*interp**

  Interpreter for error messages (NULL possible).

- **const char \*optname**

  Name of option to define.

- **const Tcl\_Obj \*optvalue**

  Value to set into the container.

- **ClientData clientData**

  Arbitrary information, as defined in Trf\_TypeDefinition.clientData.

## DESCRIPTION

The procedure takes the specified optionname (rejecting illegal ones) and places the given optionvalue into the container. All necessary conversions from a Tcl\_Obj to the required type should be done here. Return value is a standard tcl error code. In case of failure and interp not NULL an error message should be left in the result area of the specified interpreter. This procedure makes sense for tcl version 8 and above only.

## SEE ALSO

[Trf\_Init(3)](/Trf_Init/3.md), [Trf\_SafeInit(3)](/Trf_SafeInit/3.md), [Trf\_IsInitialized(3)](/Trf_IsInitialized/3.md), [Trf\_CreateOptions(3)](/Trf_CreateOptions/3.md), [Trf\_DeleteOptions(3)](/Trf_DeleteOptions/3.md), [Trf\_CheckOptions(3)](/Trf_CheckOptions/3.md), [Trf\_SetOption(3)](/Trf_SetOption/3.md), [Trf\_QueryOptions(3)](/Trf_QueryOptions/3.md), [Trf\_SeekQueryOptions(3)](/Trf_SeekQueryOptions/3.md), [Trf\_WriteProc(3)](/Trf_WriteProc/3.md), [Trf\_CreateCtrlBlock(3)](/Trf_CreateCtrlBlock/3.md), [Trf\_DeleteCtrlBlock(3)](/Trf_DeleteCtrlBlock/3.md), [Trf\_TransformCharacter(3)](/Trf_TransformCharacter/3.md), [Trf\_TransformBuffer(3)](/Trf_TransformBuffer/3.md), [Trf\_FlushTransformation(3)](/Trf_FlushTransformation/3.md), [Trf\_ClearCtrlBlock(3)](/Trf_ClearCtrlBlock/3.md), [Trf\_QueryMaxRead(3)](/Trf_QueryMaxRead/3.md), [Trf\_Register(3)](/Trf_Register/3.md), [Trf\_ConverterOptions(3)](/Trf_ConverterOptions/3.md), [Trf\_MDStart(3)](/Trf_MDStart/3.md), [Trf\_MDUpdate(3)](/Trf_MDUpdate/3.md), [Trf\_MDUpdateBuf(3)](/Trf_MDUpdateBuf/3.md), [Trf\_MDFinal(3)](/Trf_MDFinal/3.md), [Trf\_MDCheck(3)](/Trf_MDCheck/3.md), [Trf\_RegisterMessageDigest(3)](/Trf_RegisterMessageDigest/3.md), [Trf\_LoadLibrary(3)](/Trf_LoadLibrary/3.md), [Trf\_XorBuffer(3)](/Trf_XorBuffer/3.md), [Trf\_ShiftRegister(3)](/Trf_ShiftRegister/3.md), [Trf\_FlipRegisterShort(3)](/Trf_FlipRegisterShort/3.md), [Trf\_FlipRegisterLong(3)](/Trf_FlipRegisterLong/3.md), [Trf\_InitStubs(3)](/Trf_InitStubs/3.md)