Man page - blt_treeexists(3)

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Manual

Blt_TreeExists

NAME
SYNOPSIS
ARGUMENTS
DESCRIPTION
RETURNS
EXAMPLE
KEYWORDS

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NAME

Blt_TreeExists - Indicates if a tree exists.

SYNOPSIS

#include <bltTree.h>

int
Blt_TreeExists ( interp , name )

ARGUMENTS

	Tcl_Interp *interp (in)		Interpreter to determine current namespace context.
	const char *name (in)		Name of an existing tree data object. Can be qualified by a namespace.

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DESCRIPTION

This procedure determines if a C-based tree data object exists by a given name. The arguments are as follows:

	interp		Used the determine the current namespace context.
	name		Name of an existing tree data object. Name can be qualified by a namespace such as fred::myTree . If no namespace qualifier is used, the current namespace is searched, then the global namespace.

RETURNS

A boolean result is returned. If the tree exists 1 is returned, 0 otherwise.

EXAMPLE

The following example checks if a tree "myTree" exists.

if (!Blt_TreeExists(interp, "myTree")) {
fprintf(stderr, "can’t find tree \"myTree\\n");
}

KEYWORDS

tree, token Tcl_TreeCreate, Tcl_TreeGetToken, Tcl_TreeReleaseToken

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