This shader-reflection interface provides access to a constant buffer.
interface ID3D11ShaderReflectionConstantBuffer
To create a constant-buffer interface, call ID3D11ShaderReflection::GetConstantBufferByIndex or ID3D11ShaderReflection::GetConstantBufferByName. This is not a COM interface; therefore, you do not need to worry about reference counts or releasing the interface when you are done with it.
Header: Declared in d3d11shader_x.h (d3d11shader.h on other Windows platforms).
Library: Use d3d11_x.lib (d3d11.lib on other Windows platforms).