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'\"
'\" Copyright (c) 1996-1997 Sun Microsystems, Inc.
'\"
'\" See the file "license.terms" for information on usage and redistribution
'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
'\"
'\" RCS: @(#) $Id: CrtObjCmd.3,v 1.7.4.4 2005/04/07 17:31:58 dgp Exp $
'\"
.so man.macros
.TH Tcl_CreateObjCommand 3 8.0 Tcl "Tcl Library Procedures"
.BS
.SH NAME
Tcl_CreateObjCommand, Tcl_DeleteCommand, Tcl_DeleteCommandFromToken, Tcl_GetCommandInfo, Tcl_GetCommandInfoFromToken, Tcl_SetCommandInfo, Tcl_SetCommandInfoFromToken, Tcl_GetCommandName, Tcl_GetCommandFullName, Tcl_GetCommandFromObj \- implement new commands in C
.SH SYNOPSIS
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'\"
'\" Copyright (c) 1996-1997 Sun Microsystems, Inc.
'\"
'\" See the file "license.terms" for information on usage and redistribution
'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
'\"
'\" RCS: @(#) $Id: CrtObjCmd.3,v 1.7.4.5 2006/07/05 21:29:10 dgp Exp $
'\"
.so man.macros
.TH Tcl_CreateObjCommand 3 8.0 Tcl "Tcl Library Procedures"
.BS
.SH NAME
Tcl_CreateObjCommand, Tcl_DeleteCommand, Tcl_DeleteCommandFromToken, Tcl_GetCommandInfo, Tcl_GetCommandInfoFromToken, Tcl_SetCommandInfo, Tcl_SetCommandInfoFromToken, Tcl_GetCommandName, Tcl_GetCommandFullName, Tcl_GetCommandFromObj \- implement new commands in C
.SH SYNOPSIS
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the argument objects. Unlike \fIargv\fR[\fIargv\fR] used in a
string-based command procedure, \fIobjv\fR[\fIobjc\fR] will not contain NULL.
.PP
Additionally, when \fIproc\fR is invoked, it must not modify the contents
of the \fIobjv\fR array by assigning new pointer values to any element of the
array (for example, \fIobjv\fR[\fB2\fR] = \fBNULL\fR) because this will
cause memory to be lost and the runtime stack to be corrupted. The
\fBCONST\fR in the declaration of \fIobjv\fR will cause ANSI-compliant
compilers to report any such attempted assignment as an error. However,
it is acceptable to modify the internal representation of any individual
object argument. For instance, the user may call
\fBTcl_GetIntFromObj\fR on \fIobjv\fR[\fB2\fR] to obtain the integer
representation of that object; that call may change the type of the object
that \fIobjv\fR[\fB2\fR] points at, but will not change where
\fIobjv\fR[\fB2\fR] points.
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the argument objects. Unlike \fIargv\fR[\fIargv\fR] used in a
string-based command procedure, \fIobjv\fR[\fIobjc\fR] will not contain NULL.
.PP
Additionally, when \fIproc\fR is invoked, it must not modify the contents
of the \fIobjv\fR array by assigning new pointer values to any element of the
array (for example, \fIobjv\fR[\fB2\fR] = \fBNULL\fR) because this will
cause memory to be lost and the runtime stack to be corrupted. The
\fBconst\fR in the declaration of \fIobjv\fR will cause ANSI-compliant
compilers to report any such attempted assignment as an error. However,
it is acceptable to modify the internal representation of any individual
object argument. For instance, the user may call
\fBTcl_GetIntFromObj\fR on \fIobjv\fR[\fB2\fR] to obtain the integer
representation of that object; that call may change the type of the object
that \fIobjv\fR[\fB2\fR] points at, but will not change where
\fIobjv\fR[\fB2\fR] points.
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