Access device using CreateFile, ReadFile, WriteFile in Metro Apps

Question

Hi all,

Does anyone know if it is possible to use CreateFile, ReadFile, and WriteFile function in a Metro App to perform I/O function on a device?

Answer 1

This is not possible.  Please see the following session for alternatives:

http://channel9.msdn.com/events/BUILD/BUILD2011/HW-747T

Best Wishes - Eric

Answer 2

Hi Eric,

I've looked at the video and read the source code as you suggested. It seems that we will have to use CreateDeviceAccessInstance and IDeviceIoControl function. If i'm correct, this means we will have to implement KMDF instead of UMDF if we want to perform I/O function on a device. Is it correct?

Thanks,

Answer 3

UMDF is supported as well...

Answer 4

Thank Eric.

Answer 5

Dear Eric,

 Your mean is We can use CreateFile, ReadFile, and WriteFile function in a Metro App to perform I/O function on a device via UMDF.

right?

Answer 6

Dear Eric,

 Your mean is We can use CreateFile, ReadFile, and WriteFile function in a Metro App to perform I/O function on a device via UMDF.

right?

You can use UMDF however you need to use CreateDeviceAccessInstance and IDeviceIoControl functions.  Please see the following session for more details:

http://channel9.msdn.com/events/BUILD/BUILD2011/HW-747T

Best Wishes - Eric