#include <bltTree.h> char * Blt_TreeName(tree)
Blt_Tree   tree    (in)
    Token for the tree object.  
This procedure returns the name of the C-based tree data object. The arguments are as follows:
Blt_Tree token;
if (Blt_TreeCreate(interp, NULL, &token) != TCL_OK) {
    return TCL_ERROR;
}
printf("tree is %s\n", Blt_TreeName(token));
Keywords
Tcl_TreeGetToken, Tcl_TreeExists, Tcl_TreeReleaseToken