System.Windows.Interop.D3DImage.CloneCommon C# (CSharp) Method

        private void CloneCommon(Freezable sourceFreezable)
        {           
            D3DImage source = (D3DImage)sourceFreezable;

            _dpiX = source._dpiX;
            _dpiY = source._dpiY;
            
            Lock();
            // If we've lost the front buffer, _pUserSurface unsafe will be null
            SetBackBuffer(D3DResourceType.IDirect3DSurface9, source._pUserSurfaceUnsafe);
            Unlock();
        }