FreeBSD Manual Pages
Blt_TreeExists(3) BLT Library Procedures Blt_TreeExists(3) ______________________________________________________________________________ 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 name- space 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 quali- fier 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 oth- erwise. 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 BLT 2.5 Blt_TreeExists(3)
NAME | SYNOPSIS | ARGUMENTS | DESCRIPTION | RETURNS | EXAMPLE | KEYWORDS
Want to link to this manual page? Use this URL:
<https://man.freebsd.org/cgi/man.cgi?query=Blt_TreeExists&sektion=3&manpath=FreeBSD+Ports+15.0>