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Re: [Qemu-devel] Qemu does not pass pressed caps lock to client


From: Shahar Havivi
Subject: Re: [Qemu-devel] Qemu does not pass pressed caps lock to client
Date: Fri, 12 Feb 2010 13:09:03 +0200

It's not true that SDL is not sending up event like the comment say,

On Fedora 12 it behave like a toggle button, first press/release will send
caps-down event second press/release send caps-up event

On Ubuntu 9.10 it work like any other key, i.e. pressing caps will generate two
events down and up.

Shahar.

On Fri, Feb 12, 2010 at 11:54 AM, Kevin Wolf <address@hidden> wrote:
> Am 11.02.2010 22:13, schrieb Shahar Havivi:
>> Qemu have a hack for capslock that is not working with Ubuntu.
>> attached patch that fix it, as describe in this bug:
>> https://bugs.launchpad.net/qemu/+bug/427612
>>
>> Signed-off-by: Shahar Havivi <address@hidden>
>>
>> ---
>>  sdl.c |    7 ++++---
>>  1 files changed, 4 insertions(+), 3 deletions(-)
>>
>> diff --git a/sdl.c b/sdl.c
>> index cf27ad2..b3d5049 100644
>> --- a/sdl.c
>> +++ b/sdl.c
>> @@ -390,9 +390,10 @@ static void sdl_process_key(SDL_KeyboardEvent *ev)
>>          break;
>>      case 0x45: /* num lock */
>>      case 0x3a: /* caps lock */
>> -        /* SDL does not send the key up event, so we generate it */
>> -        kbd_put_keycode(keycode);
>> -        kbd_put_keycode(keycode | 0x80);
>> +        if (ev->type == SDL_KEYUP)
>> +            kbd_put_keycode(keycode | 0x80);
>> +        else
>> +            kbd_put_keycode(keycode);
>>          return;
>>      }
>>
>
> The previous code explicitly says the SDL doesn't send the key up event.
> If you think this is wrong generally, this definitely needs an
> explanation in the commit message, Also it could use an explanation of
> _why_ it doesn't work with Ubuntu - I assume they use either a newer or
> a patched SDL version which does generate these events? As you did not
> provide these explanations, I assume that this just happens to work for
> your specific Ubuntu version and is wrong for some other systems.
>
> What about always generating both keycodes as we currently do, but
> ignoring the event if ev->type == SDL_KEYUP? This should work with any
> SDL version.
>
> Kevin
>




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