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- ;/* prefnotify.c. - Execute me to compile me with SAS/C 5.10
- lc -cfistq -v -y -j73 prefnotify.c
- blink from LIB:c.o,prefnotify.o to prefnotify lib LIB:LC.lib LIB:amiga.lib
- quit
- */
-
- /*
- Copyright (c) 1992 Commodore-Amiga, Inc.
-
- This example is provided in electronic form by Commodore-Amiga, Inc. for
- use with the "Amiga ROM Kernel Reference Manual: Libraries", 3rd Edition,
- published by Addison-Wesley (ISBN 0-201-56774-1).
-
- The "Amiga ROM Kernel Reference Manual: Libraries" contains additional
- information on the correct usage of the techniques and operating system
- functions presented in these examples. The source and executable code
- of these examples may only be distributed in free electronic form, via
- bulletin board or as part of a fully non-commercial and freely
- redistributable diskette. Both the source and executable code (including
- comments) must be included, without modification, in any copy. This
- example may not be published in printed form or distributed with any
- commercial product. However, the programming techniques and support
- routines set forth in these examples may be used in the development
- of original executable software products for Commodore Amiga computers.
-
- All other rights reserved.
-
- This example is provided "as-is" and is subject to change; no
- warranties are made. All use is at your own risk. No liability or
- responsibility is assumed.
- */
-
- /*
- ** prefnotify.c - notified if serial prefs change
- */
-
- #include <exec/types.h>
- #include <exec/memory.h>
- #include <dos/dos.h>
- #include <dos/notify.h>
-
- #include <stdio.h>
-
- #include <clib/exec_protos.h>
- #include <clib/dos_protos.h>
-
- #ifdef LATTICE
- int CXBRK(void) { return(0); } /* Disable Lattice CTRL/C handling */
- int chkabort(void) { return(0); } /* really */
- #endif
-
- #define PREFSFILENAME "ENV:sys/serial.prefs"
-
- static UBYTE *VersTag = "\0$VER: prefnot 37.1 (09.07.91)";
-
- extern struct Library *DOSBase;
-
-
- void main(int argc, char **argv)
- {
- BOOL done=FALSE;
- struct NotifyRequest *notifyrequest;
- UBYTE *filename;
- LONG signum;
- ULONG signals;
-
- /* We need at least V37 for notification */
- if (DOSBase->lib_Version >= 37)
- {
- /* Allocate a NotifyRequest structure */
- if (notifyrequest = AllocMem(sizeof(struct NotifyRequest), MEMF_CLEAR))
- {
- /* And allocate a signalsbit */
- if ((signum = AllocSignal(-1L)) != -1)
- {
- /* Initialize notification request */
- filename = PREFSFILENAME;
- notifyrequest->nr_Name = filename;
- notifyrequest->nr_Flags = NRF_SEND_SIGNAL;
- /* Signal this task */
- notifyrequest->nr_stuff.nr_Signal.nr_Task = (struct Task *) FindTask(NULL);
- /* with this signals bit */
- notifyrequest->nr_stuff.nr_Signal.nr_SignalNum = signum;
-
- if ((StartNotify(notifyrequest)) == DOSTRUE)
- {
- printf("Select Serial Prefs SAVE or USE to notify this program\n");
- printf("CTRL-C to exit\n\n");
- /* Loop until Ctrl-C to exit */
- while(!done)
- {
- signals = Wait( (1L << signum) | SIGBREAKF_CTRL_C );
- if (signals & (1L << signum))
- printf("Notification signal received.\n");
- if (signals & SIGBREAKF_CTRL_C)
- {
- EndNotify(notifyrequest);
- done=TRUE;
- }
- }
- }
- else printf("Can't start notification\n");
- FreeSignal(signum);
- }
- else printf("No signals available\n");
- FreeMem(notifyrequest, sizeof(struct NotifyRequest));
- }
- else printf("Not enough memory for NotifyRequest.\n");
- }
- else printf("Requires at least V37 dos.library\n");
- }
-