CreateDevice fails for F200, but works for R200

[John_M_9]

Hi All,

The following code works with the R200, but fails to CreateDevice for the F200.

	// Create session to be able to set depth
	PXCSession *session = PXCSession::CreateInstance();

	PXCSession::ImplDesc desc = {};
	desc.group = PXCSession::IMPL_GROUP_SENSOR;
	desc.subgroup = PXCSession::IMPL_SUBGROUP_VIDEO_CAPTURE;

	PXCSession::ImplDesc desc1 = {};
	sts = session->QueryImpl(&desc, 0, &desc1);

	PXCCapture* c;
	sts = session->CreateImpl<PXCCapture>(&desc1, &c);
	if (sts<PXC_STATUS_NO_ERROR)
		return 2;
	
	pxcI32 num = c->QueryDeviceNum();

	PXCCapture::Device* dv = c->CreateDevice(0);
	if (!dv)
		return 3;

With the F200, everything seems fine up through CreateImpl().  It comes back with a pointer, c, and sts == PXC_STATUS_NO_ERROR.  But then num = c->QueryDeviceNum(); == 0 (where it = 1 if connected to the R200 instead).  And dv = c->CreateDevice(0); comes back NULL.

I am only connecting one camera at a time.  Both cameras work fine using the Capture Viewer, so I am sure that all drivers are installed correctly.

Does anyone have any suggestions?  Any help is greatly appreciated.

John

[Xusheng_L_Intel]

Please do not use 

sts = session->QueryImpl(&desc, 0, &desc1);

use 

sts = session->QueryImpl(&desc1,m,&desc2)

You can find detail usage @https://software.intel.com/sites/landingpage/realsense/camera-sdk/v1.1/documentation/html/manuals_enumerate_i_o_devices.html