You can intercept this event by using Notification Manager. Register your handler for EventDequeueEvent and you can see all event.
Here's some code
Registering for nitification
{
UInt16 cardNo;
LocalID dbID;
SysCurAppDatabase (&cardNo, &dbID);
SysNotifyRegister( cardNo, dbID, sysNotifyEventDequeuedEvent, 0, sysNotifyNormalPriority, 0) ;
}
Notification Handler
static Boolean
EvtNotifyHandler(SysNotifyParamType *notify)
{
char buf[64];
UInt16 chr, code, chr1,chr2;
SysEventType *evt = (SysEventType *)(notify->notifyDetailsP);
// Display event on screen
StrPrintF(buf, "Event num=%x ", Swap16(evt->eType) );
WinDrawChars(buf,StrLen(buf),0,0);
SysTaskDelay(10);
if ( Swap16(evt->eType == sysEventKeyDownEvent){
// Get and convert endian
chr = Swap16( evt->data.keyDown.chr );
code = Swap16( evt->data.keyDown.keyCode );
// Display KeyDown event
StrPrintF(buf, "(%x,%x) ", chr, code );
WinDrawChars(buf,StrLen(buf),0,10);
SysTaskDelay(40);
// check to see if it's HotSync starting virtual character
if (chr == vchrHardCradle){
WinDrawChars("HotSync intercepted",19,80,0);
SysTaskDelay(100);
// Empty event
evt->eType = sysEventNilEvent;
}
}
return 0;
}
If you want to try, Binary is at http://homepage2.nifty.com/hackerdudesan/notification_test.zip
At 12:52 03/02/21 +0800, Tim Niu wrote:
Hi Alan,
Can you tell me how to intercept it? I've searched all the documents in
hand, but I can not find the right way to do this. Before OS5.0, I can do it
using trap. But now .....
Thanks.
----- Original Message -----
From: "Alan Ingleby" <[EMAIL PROTECTED]>
Newsgroups: palm-dev-forum
To: "Palm Developer Forum" <[EMAIL PROTECTED]>
Sent: Friday, February 21, 2003 12:40 PM
Subject: Re: How to prevent system from getting Hotsync signal ?
> There's obviously some sort of notification going on under the hood which
> you can intercept. After all the Palm keyboard does a similar thing.
>
> That's all I can add.
>
> Alan
>
> "Tim Niu" <[EMAIL PROTECTED]> wrote in message
> news:114352@palm-dev-forum...
> >
> > Hi Dave,
> > Thanks for your suggestion. But I have no right to make a change on
> > hardware, and it's keyboard vendor's business. Without changing of
> hardware,
> > what can I do from software side? Can you give me more information?
> > Many thanks.
> >
> > ----- Original Message -----
> > From: "Dave Lippincott" <[EMAIL PROTECTED]>
> > To: "Palm Developer Forum" <[EMAIL PROTECTED]>
> > Sent: Thursday, February 20, 2003 11:03 PM
> > Subject: Re: How to prevent system from getting Hotsync signal ?
> >
> >
> > > Look at the Palm serial connector schematic, disconnect your keyboard
> from
> > > the Hotsync interrupt on the port.
> > >
> > > ----- Original Message -----
> > > From: "Tim Niu" <[EMAIL PROTECTED]>
> > > To: "Palm Developer Forum" <[EMAIL PROTECTED]>
> > > Sent: Thursday, February 20, 2003 1:52 AM
> > > Subject: How to prevent system from getting Hotsync signal ?
> > >
> > >
> > > > Dear all,
> > > > I'm just developing keyboard driver for Palm under OS5.0. But
when
> > > > keying in, keyboard will send a hotsync signal to serial port that
> > causes
> > > > Palm to start the process of hotsync, even if my driver has already
> > gotten
> > > > the control of serial port. My driver can't not work from the very
> > start.
> > > > How can I avoid this problem ? What could I do in my program to
> > > prevent
> > > > system from getting hotsync signal without changing firmware ?
> > > > Can anybody help me ?
> > > >
> > > > Tim
> > > >
> > > >
> > > >
> > > > --
> > > > For information on using the Palm Developer Forums, or to
unsubscribe,
> > > please see http://www.palmos.com/dev/support/forums/
> > > >
> > >
> > >
> > >
> > > --
> > > For information on using the Palm Developer Forums, or to unsubscribe,
> > please see http://www.palmos.com/dev/support/forums/
> > >
> >
> >
> >
> >
>
>
>
> --
> For information on using the Palm Developer Forums, or to unsubscribe,
please see http://www.palmos.com/dev/support/forums/
>
--
For information on using the Palm Developer Forums, or to unsubscribe, please see http://www.palmos.com/dev/support/forums/
YAMADA Tatsushi Hacker Dude-san http://simple-palm.com mailto:[EMAIL PROTECTED]
-- For information on using the Palm Developer Forums, or to unsubscribe, please see http://www.palmos.com/dev/support/forums/
