C++ Pointer to GpuMat

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I am using OpenCV 3.0 with VS2012C++/CLI on a Win 8.1 64 bit machine.

I am wondering what the proper way is to create a C++ pointer to a Gpumat.

Currently, I define a class like:

public class gpuImages
{
public:
    cuda::GpuMat *d_gpuLoadFrame;
    cuda::GpuMat *d_gpuLoadFrameClone;
    cuda::GpuMat *d_gpuAnalysisFrame;
    cuda::GpuMat *d_gpuGrayFrame;
    cuda::GpuMat *d_gpuMaskFrame;
    cuda::GpuMat *d_gpuFalseMaskFrame;    
    gpuImages();    
    ~gpuImaes();
};

gpuImages::gpuImages()
{
    d_gpuLoadFrame = new cuda::GpuMat();
    d_gpuLoadFrameClone = new cuda::GpuMat();
    d_gpuAnalysisFrame = new cuda::GpuMat();
    d_gpuGrayFrame = new cuda::GpuMat();
    d_gpuMaskFrame = new cuda::GpuMat();
    d_gpuFalseMaskFrame = new cuda::GpuMat();
}

Then, in my main code, I do things like:

dImages = new gpuImages();
dImages->d_gpuLoadFrame->upload(Some-nongpu-CVMat);
dImages->d_gpuLoadFrameClone = dImages->d_gpuLoadFrame->clone();
...

Other errors I am seeing make me think that the pointer to the GpuMats are being lost and that I might need to explicitly allocate GPU memory and track it. Seems like it kind of defeats the some of the ease of use.

If I do need to explicitly allocate and track the GPU memory, is there any example or guide? I assume that it is something like this: link. If I need to do that, cudaMalloc2d does not seem to exist any longer. What would be the correct way to do it to store a Mat with an HD image in it.

Thanks for any help. James