传说中的无敌吸星大法

最新推荐文章于 2025-05-06 22:32:47 发布

转载最新推荐文章于 2025-05-06 22:32:47 发布 · 731 阅读

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#application #search #byte #file #user #fp

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本文详细介绍了如何在S60 3rd Edition FP2模拟器中定位并修改背光超时设置的具体步骤。通过对比设置修改前后特定文件的变化，找到了与背光超时设置直接相关的配置文件及字节位置。

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Hi,

Assume that the value 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 value 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 actually 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/udeb/z/private/10202be9/101f877c.txt",
the key of the item with default value 15 is 0x8, so I guess 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