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Tk_Main(3)		     Tk Library Procedures		    Tk_Main(3)

______________________________________________________________________________

NAME
       Tk_Main - main program for Tk-based applications

SYNOPSIS
       #include <tk.h>

       Tk_Main(argc, argv, appInitProc)

ARGUMENTS
       int		 argc		(in)	  Number  of elements in argv.

       char		 *argv[]	(in)	  Array of strings  containing
						  command-line arguments.

       Tcl_AppInitProc	 *appInitProc	(in)	  Address  of  an application-
						  specific initialization pro-
						  cedure.   The value for this
						  argument     is      usually
						  Tcl_AppInit.
_________________________________________________________________

DESCRIPTION
       Tk_Main	acts  as  the  main  program  for  most Tk-based applications.
       Starting with Tk 4.0 it is not called main anymore because it  is  part
       of the Tk library and having a function main in a library (particularly
       a shared library) causes problems on many systems.  Having main in  the
       Tk library would also make it hard to use Tk in C++ programs, since C++
       programs must have special C++ main functions.

       Normally each application contains a  small  main  function  that  does
       nothing but invoke Tk_Main.  Tk_Main then does all the work of creating
       and running a wish-like application.

       When it is has finished its own initialization, but before it processes
       commands,  Tk_Main  calls  the procedure given by the appInitProc argu-
       ment.  This procedure provides a ``hook'' for the application  to  per-
       form its own initialization, such as defining application-specific com-
       mands.  The procedure must have an  interface  that  matches  the  type
       Tcl_AppInitProc:
	      typedef int Tcl_AppInitProc(Tcl_Interp *interp);
       AppInitProc is almost always a pointer to Tcl_AppInit; for more details
       on this procedure, see the documentation for Tcl_AppInit.

KEYWORDS
       application-specific initialization, command-line arguments, main  pro-
       gram

Tk				      4.0			    Tk_Main(3)
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