Hi,
Does anyone know how to set the phone sound profile to automatic, through native or manged code, or whatever?
I know this is vendor specific, but I am assuming that HTC devices have a standard dll that exposes this functionality (pls let me know otherwise)
Thanks
-CU
this belongs in the Q&A section.
thank you
Related
Hallo!
I'm working on an application called hTorch and although it is my first vb.net app I was quite successfull so far (at least I hope so ). But one think I'm just not able to achieve: Preventing the device from going into standby/suspend while the app is running.
In C++/C# there semes to be a system call "SystemIdleTimerReset()" but either there is no equivalent for vb.net or I was not able to find it.
Another thought was to modify the according registry key (HKLM\System\CurrentControlSet\Control\Power\Timeouts\BattSuspendTimeout) and to restore the original settings on program exit. This works fine except that WM does not apply the settings change immediately when it's done via registry. Again I did some research and again I only found a solution for C++/C# only. A system call named "NWUS_MAX_IDLE_TIME_CHANGED" tells the OS that the settings have changed and should be reread. I wasn't able to find something similar for vb.net though.
Does anybody know a solution for my needs?
Maybe someone could provide me with some sample code how he achieved this within vb.net?
Maybe some C++/C# programmer has build a library to access the power functions?
I would be really thankful for any help/hint you can give me!
Thanks in advance,
DeepThought
The standby mode is in the registry. Make a timer in VB.net and set it with an interval of about 5000 ms. Then make sure that ever time the timer ticks the standby mode will be disabled in the registry
Thank you for the quick response!
But the change via registry doesn't work. When I change the BattSuspendTimeout to 0 that does change the setting correctly. But they become not active. Only after a soft reset. It seems, that you somehow have to notify windows, that the settings have changed. Otherwise the will not be reread.
Any Idea how to achieve that?
I would also like to know if there is a way to prevent suspend.
I think only the pocket pc winmo versions do a real suspend where wifi and applications stop processing, and the smartphone winmo devices only kind of black the screen.
The only software I know is S2U2 which successfully can prevent "real suspend" and let e.g. my led notification work correctly.
Cause i cannot really use it on ks20 due to compatibilty issues i would be very interested in a reg hack, or (if there really is no reghack, i tried alot) some code snipets with which i could build a little app.
There's a pretty good article on CodeProject covering power.
*digs out link*
Here you go - http://www.codeproject.com/KB/mobile/WiMoPower1.aspx
It covers:
* Displaying the voltage, current, and temperature of your device's battery
* Changing the power state of hardware within the device
* Enumerating the hardware in a Windows Mobile Professional device
* Enumerating the power modes that a Windows Professional device supports
* Preventing a device from sleeping
* Toggling the state of the screen's backlight
* Waking up the machine to perform work without alerting the user or turning on the screen
[solution]
Thanks to AndyZap I can now answer the question myself
It is so simple, that I'm really ashamed now.
The magic word for me was PInvoke. Since I new the function I was searching for was an available win32 systemcall the missing link was how I can make this system call within vb.net.
So the actual solution are just two lines:
Code:
Declare Sub IdleTimerReset Lib "coredll.dll" Alias "SystemIdleTimerReset" ()
where "IdleTimerReset" is the name I've given the Sub. Which than just needs to be called like:
Code:
IdleTimerReset()
NOTE: This just resets the Idle timer once. So if you want to prevent the device from going into standby you have to reset this timer every time before it reaches the threshold. (The windows default setting is 60 seconds AFAIK).
THANK YOU AndyZap for your Help via PMail!
DeepThought
Thank you for your answer Northernmost!
I really love this community!
Hi,
Does anyone know how to set the phone sound profile to automatic, through native or manged code, or whatever?
I know this is vendor specific, but I am assuming that HTC devices have a standard dll that exposes this functionality (pls let me know otherwise)
Thanks
-CU
I am using a phone that has a Windows 6.5 operating system on it.
I wish to disable all the features on my phone other than GPRS connectivity,Wifi connectivity and Camera features.i.e.I shouldnt be able to make or receive calls,text anyone,play games,or use any other default feature.
Either it must be completely disabled or i should be able to give so kind of password protection to these features.
Please help me at the earliest,i require it for a project completion,and i am not able to figure it out as how this can be done.
Thank You in advance
i dont know whether this is the right place to post as i am a new user,so i am extremely sorry if i have made a mistake.
You should get a SIM card that only supports data access for your project. This will prevent any circuit switched (i.e. voice) features and linked services like SMS. There are also options to activate call barring features for a normal SIM (so you can steer what is allowed or not) - but his is then again part of the SIM card subscription (and can be used on any phone likewise).
There are no default options which could cripple your device in such way as you have asked for.
How to make changes in security policy of Windows Mobile 6.5 Professional?
i was browsing through the net and i found this matter:
4102
Unsigned Applications Policy
SECPOLICY_UNSIGNEDAPPS
This setting indicates whether unsigned applications are allowed to run on Windows Mobile devices. If a signed application does not have a matching root certificate in the Privileged Execution Trust Authorities or the Unprivileged Execution Trust Authorities certificate store, the application is unsigned.
You should always use SECPOLICY_UNSIGNEDCABS together with SECPOLICY_UNSIGNEDAPPS policy. This means that when you block unsigned applications from running, you should also block unsigned cab files from getting installed on the device.
Default value is 1 for Windows Mobile.
The following list shows the possible values:
0 indicates that unsigned applications are not allowed to run on the device.
1 indicates that unsigned applications are allowed to run on the device.
Any value other than 1 is treated as 0.
The required role to modify this policy is SECROLE_MANAGER.
i think this will help me as i can make the applications that i dont need as unsigned applications and then make it 0 which will serve my purpose...but i have no clue how to make these changes in my mobile..
Can u please help me with this???
the solution that is given wont work for me because if anyone changes the sim then the settings i require will change and thus the solution is not full proof. i also dont know i will get any sim dat only offers data transfer.
thank you for the quick reply and i am expecting the same in future too!!
Thanks in advance
Regards,
Sneha
Let me write you this last reply to your query, please do not expect any further from my side.
This forum deals with understanding restrictions and enabling previously hidden or restricted functions mainly - learning from each other's experience.
The subforum you have chosen (chef central) deals with understanding how the Operating System is constructed from packages and how these can be recombined to new (cooked) ROMs.
There is no intention to cripple the existing functions of the operating system itself or to restrict the Radio part of it in any way.
You may think that the snippet you took from a MSDN page delivers something you could use for your purpose (which you have not outlined) without understanding the security concept of Windows Mobile. This is quite complex and often (for simplicity) simply disabled completely on several levels - so no security either for whatever you want to do.
The existing packages of the OS do not have separate components that you could omit to disable your desired functions.
Even if so, these core packages of the OS are usually delivered as modules (another special concept of Windows CE/Mobile) that do not need any security or signing - so they run anyway without restrictions.
So finally good luck with whatever you want to do, but I believe that you cannot achieve this with a crippled Windows Mobile - at least not fool proof.
Hello Sneha,
Welcome to the forums.
Unsigned Applications Policy is totally different then what you are looking for. More info here. When enabled, you will be allowed to install or run unsigned aka untrusted apps.
But the inside apps or features are already signed so you cannot stop them from running by enabling or disabling Unsigned Applications Policy.
The really thing you need is to make a custom ROM, remove all the unnecessary things and flash it to your device(s). That means you should change/modify the built in OS (in a simple word) but you cannot do within the device
However, its not a day, week or even a month task. It takes many months to learn things and then you can finally do it. I'm 99% sure that all of your needs can be fully filled but :
1. Takes many months to learn.
2. You need to get the stock ROM, Modify and flash to the device.
BTW; which device you really have?
Thanks...
Best Regards
Closed environment is something that should be done in bsp: kernel to be precise. Also it is possible via custom certmod.dll.
BUT. Little problems:
1) no bsp sources unless you're OEM
2) no certmod.dll sources.
Please look at the initial request on the restriction of radio features. This is handled in the radio layer and this cannot be cut in pieces. So there are no components to sign/restrict/omit for that query.
Cooking can do a lot, but it does not go inside one component.
Cutting all other things may be feasible - but not for radio relevant parts imho.
tobbbie said:
Please look at the initial request on the restriction of radio features. This is handled in the radio layer and this cannot be cut in pieces. So there are no components to sign/restrict/omit for that query.
Cooking can do a lot, but it does not go inside one component.
Cutting all other things may be feasible - but not for radio relevant parts imho.
Click to expand...
Click to collapse
Of courses its a lot of work but its possible. Within the OS functions. Radio thing is just for input and output but the way its handled is under OS itself. Am I right or wrong? Think of removing packages depending to what you don't want.
i.e to disable messaging, Remove all things which are related to it. I'm sure you know it.
Though its a plenty of work and have to be expert so not messing around things.
ultrashot is right but if we had the source, every thing would have been different and even easy.
Radio is special and never dealt with in cooking. The Radio lower layers are treated with code in a dedicated partition (GSM) and accessed via an interface Layer (RIL = Radio Interface Layer) from the OS.
On top of that are applications like messaging or MMS - these can be cut.
I see no option to prevent e.g. only speech calls but allow data calls. On RIL level these are just different GSMBCIE elements (look up the relevent 3gpp specs). Of course you could find dirty ways to cut off e.g. the GSM speech codecs, but this would possibly not prevent to set up a call - creating cost but not having success when connected.
Tweaking these parts has not been of anyone's interest and thus "in theory" possible but hardly practically feasible.
How can i make changes on the OS?
Thanx a lot Cracing for the positive advice.I was planning to consult the OEM to make changes in the security policies.
I am working with the Synqe device .My main aim is barcode scanning and sending the data via GPRS or Wifi.and at the same time i want that all others connectivities and applications are to be deactivated.
Moreover i wish to restrict the usage of GPRS strictly for my application.
As u mentioned that i will have to make changes in the OS,will the OEM be able to do that for me or should i consult a good Mobile OS developer?
sneha6689 said:
Thanx a lot Cracing for the positive advice.I was planning to consult the OEM to make changes in the security policies.
I am working with the Synqe device .My main aim is barcode scanning and sending the data via GPRS or Wifi.and at the same time i want that all others connectivities and applications are to be deactivated.
Moreover i wish to restrict the usage of GPRS strictly for my application.
As u mentioned that i will have to make changes in the OS,will the OEM be able to do that for me or should i consult a good Mobile OS developer?
Click to expand...
Click to collapse
I see
Going with OEM should be better idea. They have the sources to do anything. Its not so easy for 3rd party Mobile OS developers (i.e here ). Need things and takes long enough to R&D and finish the project.
Hope you will find a good solution for your project soon.
Thanks...
Best Regards
Hi Guys,
first i have to plead ignorance of the subject,
im a chief of a group of guys who sometimes choose to do something new, which mean im not very technical,
what i need to find out is:
is it possible (and perhaps how) to obtain information from beacon frames, mainly im interested in either of following:
- Timestamp
- Beacon interval
- Target Beacon Transmission Time
or in natural language i need to find out as accurately as it is possible, at what interval rate given AP (either one i am connected to or best, all i can detect) is sending its beacon frame.
i need info about:
a) is this possible,
b) if it is, how can i do this,
c) if its impossible, did anyone really try or just look for tools to do it, and didn't found it
and
if any of this is possible under iOS
regards
Vercy
hello all
i dont even know how to ask…
but this is the project i would like to start:
develop an that will be able to track another phone or gps device based on phone number or some sort of imei or sn
the both devices know about each other… its not something that will run without the knowledge of this devices.
is there a way to do this?
would i need a separate server witch will receive the gps info an pass on to the other device?
Sent from my SGS2 on SB4.4.2
ripnix said:
hello all
i dont even know how to ask…
but this is the project i would like to start:
develop an that will be able to track another phone or gps device based on phone number or some sort of imei or sn
the both devices know about each other… its not something that will run without the knowledge of this devices.
is there a way to do this?
would i need a separate server witch will receive the gps info an pass on to the other device?
Sent from my SGS2 on SB4.4.2
Click to expand...
Click to collapse
I think yes, you need some communication node here.
One device should send id(imei) and position to server, and second will request last position(or all previous positions) by id.
I don't know any other way that can help to archive your goal(direct connection between devices also possible, but you need server anyway )
thank you,
any other suggestions/thoughts ?