htclinit.c

很不错的tcl编程实例

/* 
 * tkAppInit.c --
 *
 *	Provides a default version of the Tcl_AppInit procedure for
 *	use in wish and similar Tk-based applications.
 *
 * Copyright (c) 1993 The Regents of the University of California.
 * Copyright (c) 1994 Sun Microsystems, Inc.
 *
 * See the file "license.terms" for information on usage and redistribution
 * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 */
/*
# Copyright 1996


# Authors

# Lakshmi Sastry
# Computing and Information Systems Department
# Rutherford Appleton Laboratory, Chilton, Didcot. OX11 0QX
# [e-mail]

#                         and

# Venkat VSS Sastry
# Department of Applied Mathematics and Operational Research
# Cranfield University, RMCS Shrivenham, Swindon, SN6 8LA
# [e-mail]

# Permission to use, copy, modify, and distribute this
# software and its documentation for any purpose and without
# fee is hereby granted, provided that this copyright
# notice appears in all copies.
  
# The authors, RAL, RMCS Shrivenham and Cranfield University
# make no representations about the suitability of this
# software for any purpose.  It is provided "as is" without
# express or implied warranty. Likewise they accept no responsibility
# whatsoever for any public domain software modules used (which are
# hereby acknowledged) in this software 
*/

#include "tcl.h"
#include "tk.h"


Tcl_Interp * interp;

int *inPipePtr;

int PopMosaic( ClientData clientdata, Tcl_Interp *interp, int argc, char *argv[])
{
int np;
char nv[6];
char *vv;
np = Tcl_CreatePipeline ( interp,argc-1, argv+1, &inPipePtr,NULL,NULL,NULL);
sprintf(nv,"%d",inPipePtr[0]);
vv= Tcl_SetVar(interp,argv[3],nv,TCL_LEAVE_ERR_MSG);

Tcl_DetachPids(np,inPipePtr);
interp->result =vv;
}

void ClearZombie (ClientData clientdata, Tcl_Interp *interp,
	 int argc, char *argv[])
{

Tcl_ReapDetachedProcs();
}

/*
 * The following variable is a special hack that is needed in order for
 * Sun shared libraries to be used for Tcl.
 */

#ifdef NEED_MATHERR
extern int matherr();
int *tclDummyMathPtr = (int *) matherr;
#endif



/*
 *----------------------------------------------------------------------
 *
 * Tcl_AppInit --
 *
 *	This procedure performs application-specific initialization.
 *	Most applications, especially those that incorporate additional
 *	packages, will have their own version of this procedure.
 *
 * Results:
 *	Returns a standard Tcl completion code, and leaves an error
 *	message in interp->result if an error occurs.
 *
 * Side effects:
 *	Depends on the startup script.
 *
 *----------------------------------------------------------------------
 */


int
Tcl_AppInit(interp)
    Tcl_Interp *interp;		/* Interpreter for application. */
{

Tk_Window mainwin;   
int done =0;
    mainwin = Tk_MainWindow(interp);

    if (Tcl_Init(interp) == TCL_ERROR) {
	return TCL_ERROR;
    }
    if (Tk_Init(interp) == TCL_ERROR) {
	return TCL_ERROR;
    }

    /*
     * Call the init procedures for included packages.  Each call should
     * look like this:
     *
     * if (Mod_Init(interp) == TCL_ERROR) {
     *     return TCL_ERROR;
     * }
     *
     * where "Mod" is the name of the module.
     */

    /*
     * Call Tcl_CreateCommand for application-specific commands, if
     * they weren't already created by the init procedures called above.
     */

	Tcl_CreateCommand(interp, "PopM", 
		(Tcl_CmdProc *)PopMosaic,(ClientData )NULL, 
				(Tcl_CmdDeleteProc *) NULL);
	Tcl_CreateCommand(interp, "ClZ", 
		(Tcl_CmdProc *)ClearZombie,(ClientData )NULL, 
				(Tcl_CmdDeleteProc *) NULL);
	
    /*
     * Specify a user-specific startup file to invoke if the application
     * is run interactively.  Typically the startup file is "~/.apprc"
     * where "app" is the name of the application.  If this line is deleted
     * then no user-specific startup file will be run under any conditions.
     */

	tcl_RcFileName ="~/.myapprc";
        return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *
 * main --
 *
 *	This is the main program for the application.
 *
 * Results:
 *	None: Tk_Main never returns here, so this procedure never
 *	returns either.
 *
 * Side effects:
 *	Whatever the application does.
 *
 *----------------------------------------------------------------------
 */

int
main(argc, argv)
    int argc;			/* Number of command-line arguments. */
    char **argv;		/* Values of command-line arguments. */
{
    Tk_Main(argc, argv,Tcl_AppInit);
    return 0;			/* Needed only to prevent compiler warning. */
}