Combination of SWIG and TCL C API

[georgtree]

Hello!
I faced with the necessity to make wrapper with callback to target language (Tcl), and as far as I can see currently there is no way to do that in SWIG. I decided to make it through native Tcl API by providing interpreter and proc name to function call, and then call this proc from C-source function.
But I still want to use SWIG wrapper for the rest of C program, so I need to combine both approaches.
My question is: are there any examples of mixing SWIG wrapping and TCL C API in source code that SWIG wraps?
Thank you in advance.