Ben -
This is a browser issue. SetBrowserData should not be necessary (if using
RETRIEVE), but it should certainly force the browser value to be updated.
DriverSampleDxe (which you are using) only seems to have a sample for Ref, not
for numeric. And, unfortunately, the SCT doesn't handle callback issues very
well.
Can you send a screen shot of the debugger you are using (or any relevant debug
output) to this list?
Tim
From: Ben Schroeder [mailto:ben...@mellanox.com]
Sent: Monday, January 21, 2013 10:22 AM
To: edk2-devel@lists.sourceforge.net
Subject: Re: [edk2] HII Config Access Protocol - Modifying question values
Thanks for the replies Tim and Sathya.
I have tried changing the Value field in these events as well:
EFI_BROWSER_ACTION_CHANGED & EFI_BROWSER_ACTION_CHANGING.
The value was not updated.
Perhaps I need to call SetBrowserData() or perhaps I need to use VFR refresh
opcode for my questions (EFI_IFR_REFRESH)..
Regards, Ben.
From: Prakash, Sathya [mailto:sathya.prak...@lsi.com]
Sent: Monday, January 21, 2013 8:05 PM
To: edk2-devel@lists.sourceforge.net<mailto:edk2-devel@lists.sourceforge.net>
Subject: Re: [edk2] HII Config Access Protocol - Modifying question values
Have you tried changing the values in CHANGED/CHANGING Callback actions? Also
have you tried invoking SetBrowserData() before returning from your callback?
Thanks
Sathya
From: Tim Lewis [mailto:tim.le...@insyde.com]
Sent: Monday, January 21, 2013 10:22 AM
To: edk2-devel@lists.sourceforge.net<mailto:edk2-devel@lists.sourceforge.net>
Subject: Re: [edk2] HII Config Access Protocol - Modifying question values
Ben -
For FORM_OPEN changing the value does nothing. For RETRIEVE it should allow you
to update the current question value used by the Forms Browser. So something is
strange.
In general, ONE_OF and NUMERIC are identical. A forms browser may choose to
display one differently than another. But they both work on a numeric value,
have the same fields, etc.
Tim
From: Ben Schroeder [mailto:ben...@mellanox.com]
Sent: Monday, January 21, 2013 2:25 AM
To: edk2-devel@lists.sourceforge.net<mailto:edk2-devel@lists.sourceforge.net>
Subject: [edk2] HII Config Access Protocol - Modifying question values
Hi everyone,
I was wondering how it is possible to modify the value of a field displayed in
an HII form.
For instance:
numeric varid = MyIfrNVData.HowOldAreYouInYears,
questionid = 0x1200,
prompt = STRING_TOKEN(STR_NUMERIC_STEP_PROMPT),
help = STRING_TOKEN(STR_NUMERIC_STEP _HELP),
flags = NUMERIC_SIZE_1 | DISPLAY_UINT_DEC | INTERACTIVE,
minimum = 0,
maximum = 243,
default = 0,
endnumeric;
In ConfigAccessProtocol DriverCallback, I have tried modifying this value in
certain places, with no success.
For instance on actions of type EFI_BROWSER_ACTION_FORM_OPEN and
EFI_BROWSER_ACTION_RETRIEVE I have tried accessing the Value union and changing
it: Value->u8 = 5
Then returning EFI_SUCCESS.
I have not seen any values being changed in all my tests. Is there a different
way to update the value?
Also, will updating the selected option in a 'one of' statement be similar?
Thanks in advance, Ben.
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