How to turn on LoudSpeaker Mode in Windows Phone 7.1 - windows-phone-7

I am planning to put the device in loudspeaker mode from my win phone application. (Like on click of some button)
Are there any APIs or workarounds to do so on Windows Phone 7.1?

There is no API available to control a loud speaker or speaker phone mode.
You can only control the relative volume of any sound you're directly playing.

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Pen Computing App Development in Windows Phone

I wanted to make an app in windows phone that takes in pen-computing input. Is there existing code infrastructure (templates and such) in the Windows Phone API that is available to the Windows Phone developer?
What I mean by pen-computing input is hand-writing input by users' fingers, giving us input like this:
Unluckily for Windows Phone 8 and Windows phone 8.1 InkManager class is not supported currently, so capturing handwritten input aint possible.
Though it works for windows 8 and 8.1 store apps which you can implement through Tutorial1 and Tutorial2
If you are focusing Windows phone would suggest to make app for Windows 10. They have release a better version of InkCanvas which is better than InkManager and works both store and phone apps being UWP. Check out this link for details on InkCanvas

windows phone application development

Is it possible to control LED's of a windows phone from a windows phone metro style application ?
I am just working on an application that will ON/oFF the LED . Does microsoft provide any APIs to ON/OFF the notification LED of the windows phone ?
Currently, this is not supported as most Windows Phones (especially Nokia/Microsoft) don't contain notification LEDs.
However, according to this link, it looks like this will be a feature supported by future Windows 10 (phone) hardware.

Multitouch on Emulator (Windows Phone 8.0)

In my Windows Phone 8.0 project, I am using 2 slider(right and left side) for controlling my robot but it is possible to use multitouching on Windows Phone Emulator? I would like to control 2 slider at the same time.
Sliders
If you run it on a computer with multi-touch then the emulator will pass that through.
If not then you can only test single-touch or specific gestures such as rotate and pinch-zoom with the "Multi-touch Input" tool (the hand on the emulator's toolbar). It will be a bit limited, but you should be able to use this tool to run both sliders simultaneously, if not independently.
--Rob

Show UVC windows phone 7

Good day all.
Can i show/hide UVC (Universal Volume Control) from my code?
Maybe any API, for example Device.ShowUVC() ?
Up to Windows Phone Mango SDK, you cannot ask the OS to show the volume control UI through code.
You can have some action on this UI through Microsoft.Phone.BackgroundAudio namespace, when your app play sound in background (ie. set if the UI show play/pause/shuffle buttons via EnabledPlayerControls enumeration).

Windows Phone 7 emulator support any GPS device for development

I am developing for Windows Phone 7.
My application uses GeoCoordinateWatcher to detect user current position.
Now my client is asking me to test GPS functionality. But i don't have Windows Phone 7 mobile available here. I want to connect a GPS receiver with my laptop and somehow connect that to Windows Phone 7 emulator so the emulator would receive the data from my USB GPS receiver.
Is it possible?
You can try Kevin D. Wolf's GPS simulator for Windows Phone 7.
It will allow you to test the GPS fonctionality of your app without any GPS device.

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