问题
How can i receive the hardware key button event On Windows phone 8 App?
I have many problem,
The WP 8 is available features are very limited.
The Windows CE / WM is a very different behavior.
I want to access the OS Layer by the API (Function)
Back button : Success. I found this key event.
Home button : ??? (I don't know)
Search button : ??? (I don't know)
Volume Up / Down : Just working volume.
Camera Key : Can i change the default camera app?
http://msdn.microsoft.com/en-us/library/windowsphone/develop/hh202963(v=vs.105).aspx
Power Key : Can i optionally lock the power key?
OEM Key (Barcode Key) : Push the button, I want to execute the My App?
[Additional]
Sorry. My Project information was too little provided. I developed the WP8 App in the WP Device OEM Manufacturers. So I can access to "OS, Device Driver, App". But there are various MS documents, By First Time, The developement is too hard.
Have you ever used these methods can I? - Named Event - SendMessage / PostMessage - Other Communication
I guess the Key-Point "How can i communicate Device driver <-> App"
I am studying now the following Function. - Service Agent - IPC
回答1:
You cannot access the majority of those buttons, by design. By not allowing applications access, it means the end user has a consistent experience with the standard platform.
You can create a new "lens" to act as a replacement for the default camera application.
That's not to say though as an OEM, that Microsoft would not provide additional access that is not available to a standard "Store" application. That type of access is often protected by a non-disclosure statement however.
来源：https://stackoverflow.com/questions/22268725/how-can-i-receive-the-hardware-key-button-event-on-windows-phone-8