Tcl_TimerProc * T_PTR
Tcl_IdleProc * T_PTR
Tcl_ExitProc * T_PTR
Tcl_FileProc * T_PTR
Tcl_EventProc * T_PTR
ClientData T_PTR
Tcl_QueuePosition T_PTR
Tcl_Event * T_PTR
Tcl_TimerToken T_PTR
PerlIOHandler * T_TK_IOHANDLER
INPUT
T_TK_IOHANDLER
$var = SVtoPerlIOHandler($arg)