# TCL_UnsetVar

Remove a tcl variable

## Calling Sequence

    OK=TCL_UnsetVar(varname [,interp])

## Arguments

varname

  character string. Contains the name of the tcl/tk variable to unset.

interp

  optional character string parameter. Name of the slave tcl interpreter in which the operation has to be performed. If not provided, it defaults to the main tcl interpreter created by Scilab.

ok

  boolean. %T if varname was deleted.

## Description

This routine allows to unset a tcl variable.

More information about Tcl/Tk: http://www.tcl.tk/doc/

## Examples

    TCL_SetVar("Scilab","OK")
    TCL_GetVar("Scilab")
    TCL_UnsetVar("Scilab")
    TCL_ExistVar("Scilab")

    TCL_CreateSlave('InterpSlave');
    TCL_SetVar("Scilab","Good",'InterpSlave')
    TCL_GetVar("Scilab",'InterpSlave')
    TCL_UnsetVar("Scilab",'InterpSlave')
    TCL_ExistVar("Scilab",'InterpSlave')
    TCL_DeleteInterp('InterpSlave')

## See Also

- ScilabEval
- TCL_EvalFile
- TCL_EvalStr
- TCL_GetVar
- TCL_SetVar
- TCL_ExistVar
- TCL_UpVar
- TCL_CreateSlave
- TCL_DeleteInterp