DosDevIOCtl keyboard function problem

[Eric Veldhuyzen]

Hi,

I am trying to get the keyboard mode, but DosDevIOCtl gives me an
errorcode 22 (Bad Command?). Could sombody please explain to me what's
wrong? Here is a fragment of what I was trying to do:

#define INCL_DOSDEVICES
#define INCL_DOSDEVIOCTL
#include <os2.h>

#define STDIN 0x00000000
#define STDOUT 0x00000001
#define STDERR 0x00000002

int main ()
{
APIRET rc;
ULONG ParmLengthInOut = 0,
DataLengthInOut = 0;

BYTE KeyboardMode;

if ((rc = DosDevIOCtl (STDIN, IOCTL_KEYBOARD, KBD_GETINPUTMODE,
(PVOID) & KeyboardMode, sizeof (BYTE), &ParmLengthInOut,
NULL, 0, NULL)) != 0) {
printf ("DosDevIOCtl GetInputMode failed with rc = %ld.\n", rc);
return (rc);
}
}

BTW, I am using EMX gcc.

--
Eric Veldhuyzen TEAM OS/2
Eric.Ve...@si.hhs.nl CIS: [100010,3051]
Er...@terra.xs4all.nl PGP-KeyID: 0xFB64FCB3
************ FIGHT to keep your right to PRIVACY. Use PGP! ************

[deb@ibm]

You need to open the keyboard device, not use standard input. So add:

rc = DosOpen( "KBD$ ", &hKbd, &ulAction, 0L, 4L, 1L, 0x40L, NULL );

to your code and then pass hKbd into DosDevIOCtl instead of STDIN if rc is
equal to NO_ERROR...

[Eric Veldhuyzen]

In article <D9rHt...@bocanews.bocaraton.ibm.com>, <deb@ibm> wrote:
>
>You need to open the keyboard device, not use standard input. So add:
>
> rc = DosOpen( "KBD$ ", &hKbd, &ulAction, 0L, 4L, 1L, 0x40L, NULL );
>
>to your code and then pass hKbd into DosDevIOCtl instead of STDIN if rc is
>equal to NO_ERROR...

Thanks, but I think I need more than this, since now my program
gives me the message "The parameter is incorrect" (rc = 87).

#define INCL_DOSDEVICES
#define INCL_DOSDEVIOCTL
#define INCL_DOSMISC
#include <os2.h>

int main ()
{
APIRET rc;
ULONG ParmLengthInOut = 0,

Action,
MsgLength,
bytesWritten;
UCHAR Msg[100];
BYTE KeyboardMode;
HFILE KeyboardHandle;

if ((rc = DosOpen ("KBD$", &KeyboardHandle, &Action, 0L,
FILE_NORMAL, FILE_OPEN | OPEN_ACTION_FAIL_IF_NEW,
OPEN_ACCESS_READONLY | OPEN_SHARE_DENYREADNONE, NULL)) != 0) {
DosGetMessage (NULL, 0, Msg, sizeof (Msg), rc, "OSO001.MSG", &MsgLength);
DosWrite (1, Msg, MsgLength, &bytesWritten);
return (rc);
}
if ((rc = DosDevIOCtl (KeyboardHandle, IOCTL_KEYBOARD, KBD_GETINPUTMODE,

(PVOID) & KeyboardMode, sizeof (BYTE), &ParmLengthInOut,
NULL, 0, NULL)) != 0) {

DosGetMessage (NULL, 0, Msg, sizeof (Msg), rc, "OSO001.MSG", &MsgLength);
DosWrite (1, Msg, MsgLength, &bytesWritten);
return (rc);
}
return (0);
}

Please mail me too, because my newsfeed is very unstable lately. I
don't want to miss any replies.

[deb@ibm]

The name of the device driver is space-sensitive, so you need to include
the four blanks in the string as I did (there wasn't a typo or a spastic
finger at fault). Make sure to pass in "KBD$ ", not "KBD$"...

[Lafaix Martin]

In article <DA2HC...@bocanews.bocaraton.ibm.com>, deb@ibm writes:
|> In <2fd63742....@terra.xs4all.nl>, er...@terra.xs4all.nl (Eric Veldhuyzen) writes:
|> >In article <D9rHt...@bocanews.bocaraton.ibm.com>, <deb@ibm> wrote:
|> >>
|> >>You need to open the keyboard device, not use standard input. So add:
|> >>
|> >> rc = DosOpen( "KBD$ ", &hKbd, &ulAction, 0L, 4L, 1L, 0x40L, NULL );
|> >>
|> >>to your code and then pass hKbd into DosDevIOCtl instead of STDIN if rc is
|> >>equal to NO_ERROR...
|> >
|> >Thanks, but I think I need more than this, since now my program
|> >gives me the message "The parameter is incorrect" (rc = 87).
|>

|> The name of the device driver is space-sensitive, so you need to include
|> the four blanks in the string as I did (there wasn't a typo or a spastic
|> finger at fault). Make sure to pass in "KBD$ ", not "KBD$"...
|>
|>

Hum, I respectfuly beg to differ :-)

In fact, I think the tricky part is that you have to use the
OPEN_SHARE_DENYNONE flag to get it to work. The following code
works just fine (at least with Warp):

rc = DosOpen("KBD$",

&hf,
&ulAction,
0L,
0,
FILE_OPEN,
OPEN_ACCESS_READONLY|OPEN_SHARE_DENYNONE,
0);

Hope this helps...

Martin.
--
laf...@mimosa.unice.fr
Team OS/2

[Simon Bowring]

In article <DA2HC...@bocanews.bocaraton.ibm.com>, deb@ibm wrote:

> >>
> >> rc = DosOpen( "KBD$ ", &hKbd, &ulAction, 0L, 4L, 1L, 0x40L, NULL );
>

> The name of the device driver is space-sensitive, so you need to include
> the four blanks in the string as I did (there wasn't a typo or a spastic
> finger at fault). Make sure to pass in "KBD$ ", not "KBD$"...

I'm 95% sure this is not true! I am certain that it is not true for
other character mode device drivers in general, and it is certainly
not true for the clock$, com port and lpt device drivers, as well as all
the character mode drivers I have written.

The name in a device driver's header is space padded to 8 characters,
but there is *NO* requirement for this to be reflected in the
DosOpen() call.

Try "copy kbd$ con", type a few characters followed by CTRL-Z (End of File)
and press enter (this is not proof, since CMD.EXE could have coded a special
case for the keyboard driver, but it is evidence).

Regards

Simon Bowring

[Eric Veldhuyzen]

In article <DA2HC...@bocanews.bocaraton.ibm.com>, <deb@ibm> wrote:

>In <2fd63742....@terra.xs4all.nl>, er...@terra.xs4all.nl (Eric Veldhuyzen) writes:
>>In article <D9rHt...@bocanews.bocaraton.ibm.com>, <deb@ibm> wrote:
>>>
>>>You need to open the keyboard device, not use standard input. So add:
>>>

>>> rc = DosOpen( "KBD$ ", &hKbd, &ulAction, 0L, 4L, 1L, 0x40L, NULL );
>>>

>>>to your code and then pass hKbd into DosDevIOCtl instead of STDIN if rc is
>>>equal to NO_ERROR...
>>
>>Thanks, but I think I need more than this, since now my program
>>gives me the message "The parameter is incorrect" (rc = 87).
>>

>>#define INCL_DOSDEVICES
>>#define INCL_DOSDEVIOCTL
>>#define INCL_DOSMISC
>>#include <os2.h>
>>
>>int main ()
>>{
>> APIRET rc;
>> ULONG ParmLengthInOut = 0,
>> Action,
>> MsgLength,
>> bytesWritten;
>> UCHAR Msg[100];
>> BYTE KeyboardMode;
>> HFILE KeyboardHandle;
>>
>> if ((rc = DosOpen ("KBD$", &KeyboardHandle, &Action, 0L,
>> FILE_NORMAL, FILE_OPEN | OPEN_ACTION_FAIL_IF_NEW,

>> OPEN_ACCESS_READONLY | OPEN_SHARE_DENYNONE, NULL)) != 0) {

>> DosGetMessage (NULL, 0, Msg, sizeof (Msg), rc, "OSO001.MSG", &MsgLength);
>> DosWrite (1, Msg, MsgLength, &bytesWritten);
>> return (rc);
>> }
>> if ((rc = DosDevIOCtl (KeyboardHandle, IOCTL_KEYBOARD, KBD_GETINPUTMODE,
>> (PVOID) & KeyboardMode, sizeof (BYTE), &ParmLengthInOut,
>> NULL, 0, NULL)) != 0) {
>> DosGetMessage (NULL, 0, Msg, sizeof (Msg), rc, "OSO001.MSG", &MsgLength);
>> DosWrite (1, Msg, MsgLength, &bytesWritten);
>> return (rc);
>> }
>> return (0);
>>}
>>

>The name of the device driver is space-sensitive, so you need to include
>the four blanks in the string as I did (there wasn't a typo or a spastic
>finger at fault). Make sure to pass in "KBD$ ", not "KBD$"...

I tried both "KBD$" and "KBD$ ", but it doesn't matter. It still
gives me the error that the parameter is incorrect. The open call
works just fine BTW.

[kos...@cft.philips.nl]

The KBD_GETINPUTMODE function needs data packet, not a parameter packet!

Try the call this way:

if ((rc = DosDevIOCtl (KeyboardHandle, IOCTL_KEYBOARD, KBD_GETINPUTMODE,

NULL, 0, NULL,
(PVOID) & KeyboardMode, sizeof (BYTE), &ParmLengthInOut)) != 0) {

>>> DosGetMessage (NULL, 0, Msg, sizeof (Msg), rc, "OSO001.MSG", &MsgLength);
>>> DosWrite (1, Msg, MsgLength, &bytesWritten);
>>> return (rc);
>>> }
>>> return (0);
>>>}
>>>
>>The name of the device driver is space-sensitive, so you need to include
>>the four blanks in the string as I did (there wasn't a typo or a spastic
>>finger at fault). Make sure to pass in "KBD$ ", not "KBD$"...
>
>I tried both "KBD$" and "KBD$ ", but it doesn't matter. It still
>gives me the error that the parameter is incorrect. The open call
>works just fine BTW.
>
>--
>Eric Veldhuyzen TEAM OS/2
>Eric.Ve...@si.hhs.nl CIS: [100010,3051]
>Er...@terra.xs4all.nl PGP-KeyID: 0xFB64FCB3
> ************ FIGHT to keep your right to PRIVACY. Use PGP! ************

==========================================================================
Han Koster Nederlandse Philips Bedrijven BV
Internet: kos...@cft.philips.nl Centre for Manufacturing Technology
DECnet: NLZCL::KOSTER Eindhoven
Tel: (...)31 40 736647 The Netherlands
==========================================================================

[Eric Veldhuyzen]

In article <3s6a3f$o...@phcoms4.seri.philips.nl>,

<kos...@cft.philips.nl> wrote:
>
>The KBD_GETINPUTMODE function needs data packet, not a parameter packet!
>
>Try the call this way:
>
> if ((rc = DosDevIOCtl (KeyboardHandle, IOCTL_KEYBOARD, KBD_GETINPUTMODE,
> NULL, 0, NULL,
> (PVOID) & KeyboardMode, sizeof (BYTE), &ParmLengthInOut)) != 0) {

Are you sure about this? My documentation says something else:

> Query Input Mode - Function 71h
>
> Description - Category 04h, Function 71h
>
>This function returns the input mode.
>
> Mode - Category 04h, Function 71h
>
> Mode
> A 1-byte field containing one of the following values:
> Bit 1xxxxxx1 Shift report
> Bit 0xxxxxx0 ASCII mode
> Bit 1xxxxxxx BINARY mode
>
> Parameter Packet Format - Category 04h, Function 71h
>
>ÚÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄż
>łField Length ł
>ĂÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ´
>łMode BYTE ł
>ŔÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄŮ
>
> Data Packet Format - Category 04h, Function 71h
>
>None.
>
> Returns - Category 04h, Function 71h
>
>None.
>
> Remarks - Category 04h, Function 71h
>
>This request is used to obtain the input mode of the session of the currently
>active process. The input mode can be set with Function 51h. The input mode
>is meaningful for Ctrl+C, Ctrl+P, Ctrl+S, Ctrl+Break, Ctrl+ScrollLock, and
>Ctrl+PrtSc processing only.