Symbian设置背景灯（转）
CRepository? Vals for backlight and screen-saver timeout - 2008-07-27 08:43 #1
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Hi there
I would like find an API to discover the current timeouts on the device for the backlight and the screen-saver.
Basically, my application needs to mess with the inactivity timer to do its thing, but I still want the user's light to go out when he expects it, and to give way correctly for the screen saver - and I gss I want to update myself if the user messes with his settings.
I am gssing there is information somewhere in the CRepository, but if anyone knows where (or knows a simper way) please tell me.
Many thanks
Kibi
Reply With QuoteRe: CRepository? Vals for backlight and screen-saver timeout - 2008-07-27 11:02 #2
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You could check whether the vals are within the API plug-ins, if not then they are considered to be non-p lic, and if somebody have otten the vals from Nokia, then they are bound to the NDA, and thus they can not p lish them.
Re: CRepository? Vals for backlight and screen-saver timeout - 2009-01-04 10:06 #3
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Originally Posted by kibi1
Hi there
I would like find an API to discover the current timeouts on the device for the backlight and the screen-saver.
Basically, my application needs to mess with the inactivity timer to do its thing, but I still want the user's light to go out when he expects it, and to give way correctly for the screen saver - and I gss I want to update myself if the user messes with his settings.
I am gssing there is information somewhere in the CRepository, but if anyone knows where (or knows a simper way) please tell me.
Many thanks
KibiHi,
Assume that the val is stored in a CenRep file, do the following steps,
1. Start the S60 3rd Edition FP2 emulator and then enter the "Settings" application.
2. Remember the default val of the Power-saver timeout setting (15s) and then modify it (to 25s, for example), and then exit the "Settings" application
3. Search in the 'epoc32' folder for recently changed files, there are several modified .cre files.
101f87ef.cre
101f877c.cre
1000a82b.cre
make a copy of them
4. Enter the "Settings" application and then modify the setting again (to 30s, for example), and then exit the "Setting" application
5. Search in the 'epoc32' folder again for recently changed files, still the .cre files. Compare them to the copies made in step 3, and we can see only the 101f877c.cre is changed, and act lly only one byte is changed from 0x19 (25s) to 0x1E(30s), so it is must be the one we are looking for.
6. Check the "\epoc32\release\winscw\?\z\private\10202be9\101f877c.txt", the key of the item with default val 15 is 0x8, so I gss it is the key for backlight timeout.
...
0x8 int 15 16777216 cap_rd=alwayspass cap_wr=WriteDeviceData
...
You can make a further confirmation by code:Code:
TInt timeout = 0; CRepository* cenrep = CRepository::NewLC(TUid::Uid(0x101F877C)); User::LeaveIfError(cenrep->Get(0x8, timeout)); CleanupStack::PopAndDestroy(cenrep);Regards
Ziteng Chen
Re: CRepository? Vals for backlight and screen-saver timeout - 2009-01-04 12:19 #4
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wow!!!!! ziteng, you are superman!!!!!
Stay Hungry. Stay Foolish.
Cxt_programmer
Re: CRepository? Vals for backlight and screen-saver timeout - 2009-01-06 13:22 #5
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//Screen Saver Time out
TInt timeout = 0;
CRepository* cenrep = CRepository::NewLC(TUid::Uid(0x101F877C));
User::LeaveIfError(cenrep->Get(0x8, timeout));
CleanupStack::PopAndDestroy(cenrep);
//Backlight Time out
TInt timeout = 0;
CRepository* cenrep = CRepository::NewLC(TUid::Uid(0x101F8781));
User::LeaveIfError(cenrep->Get(0x1, timeout));
CleanupStack::PopAndDestroy(cenrep);
This is for S60 3rd edition. I do not know the others
