Tk_Main (3)
main program for Tk-based applications
SYNOPSIS
#include <tk.h>
Tk_Main(argc, argv, appInitProc)
ARGUMENTS
Tcl_AppInitProc *appInitProc
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 procedure.
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 argument. This procedure provides a ``hook''
for the application to perform its own initialization, such as defining
application-specific commands. 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 program
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