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Keyboard_Events.c
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1992-09-03
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/*
* 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: Devices", 3rd Edition,
* published by Addison-Wesley (ISBN 0-201-56775-X).
*
* The "Amiga ROM Kernel Reference Manual: Devices" 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* example may not be published in printed form or distributed with any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.
*
***************************************************************************
*
* Keyboard_Events.c
*
* This example does not work very well in a system where
* input.device is active since input.device also actively calls for
* keyboard events via this call. For that reason, you will not get all of
* the keyboard events. Neither will the input device; no one will be happy.
*
* Compile with SAS 5.10 lc -b1 -cfistq -v -y -L
*
* Run from CLI only
*/
#include <exec/types.h>
#include <exec/io.h>
#include <exec/ports.h>
#include <exec/memory.h>
#include <devices/inputevent.h>
#include <devices/keyboard.h>
#include <clib/exec_protos.h>
#include <clib/alib_protos.h>
#include <stdio.h>
#ifdef LATTICE
int CXBRK(void) { return(0); } /* Disable SAS CTRL/C handling */
int chkabort(void) { return(0); } /* really */
#endif
VOID Display_Event(struct InputEvent *keyEvent)
{
printf("Got key event: KeyCode: %2x Quailifiers: %4x\n",
keyEvent->ie_Code,
keyEvent->ie_Qualifier);
}
VOID main(int argc, char *argv[])
{
struct IOStdReq *keyRequest;
struct MsgPort *keyPort;
struct InputEvent *keyEvent;
SHORT loop;
if (keyPort=CreatePort(NULL,NULL))
{
if (keyRequest=(struct IOStdReq *)CreateExtIO(keyPort,
sizeof(struct IOStdReq)))
{
if (!OpenDevice("keyboard.device",NULL,
(struct IORequest *)keyRequest,NULL))
{
if (keyEvent=AllocMem(sizeof(struct InputEvent),MEMF_PUBLIC))
{
for (loop=0;loop<4;loop++)
{
keyRequest->io_Command=KBD_READEVENT;
keyRequest->io_Data=(APTR)keyEvent;
/*
* We want 1 event, so we just set the
* length field to the size, in bytes
* of the event. For multiple events,
* set this to a multiple of that size.
* The keyboard device NEVER fills partial
* events...
*/
keyRequest->io_Length=sizeof(struct InputEvent);
DoIO((struct IORequest *)keyRequest);
/* Check for CLI startup... */
if (argc) Display_Event(keyEvent);
}
FreeMem(keyEvent,sizeof(struct InputEvent));
}
CloseDevice((struct IORequest *)keyRequest);
}
DeleteExtIO((struct IORequest *)keyRequest);
}
DeletePort(keyPort);
}
}