Tcl_OOInitStubs - initialize library access to TclOO functionality

       Tcl_Interp *interp (in)          The  Tcl  interpreter  that the TclOO API is integrated with and whose C
                                        interface is going to be used.
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       If you are linking against the Tcl 8.5 forward compatibility package for  TclOO,  only  the  stub-enabled
       configuration  is  supported  and  you  should also link against the TclOO independent stub library; that
       library is an integrated part of the main Tcl stub library in Tcl 8.6.

       When an extension library is going to use the C interface exposed by TclOO, it should use Tcl_OOInitStubs
       to initialize its access to that interface from within its *_Init (or *_SafeInit)  function,  passing  in
       the  interp  that  was  passed  into that routine as context. If the result of calling Tcl_OOInitStubs is
       NULL, the initialization failed and an error message will have been left  in  the  interpreter's  result.
       Otherwise,  the  initialization  succeeded  and  the TclOO API may thereafter be used; the version of the
       TclOO API is returned.

       When using this function, either the C #define symbol USE_TCLOO_STUBS should be defined and your  library
       code  linked  against the Tcl stub library, or that #define symbol should not be defined and your library
       code linked against the Tcl main library directly.

       stubs

       Tcl_OOInitStubs - initialize library access to TclOO functionality

Tcl_InitStubs(3tcl)

TclOO                                                  1.0                                 Tcl_OOInitStubs(3tcl)

#include<tclOO.h>

       const char *
       Tcl_OOInitStubs(interp)