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.
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
