How to set manually mat properties?

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Hi

I would like to ask is it possible in opencv to set manually all mat properties. I am using a specialised camera were it is not possible to recognise it with opencv funcions. I would like to vizualise the data image of the camera using opencv but combining it with the opening funcitons offered by the manufacturer. I saw that when the image is ready there is a variable structure that has the following parameters:

typedef struct tag_mexImg
{
  unsigned long Version;        //!< [in] Version, currently it must be 'V003' (MEXIMGVERSION)<br>
  unsigned long Bytes;          //!< [in] Amount of bytes of this struct (sizeof(mexImg)).<br>
  int           dimX;           //!< [in/out] Horizontal pixel dimension of image<br>
  int           dimY;           //!< [in/out] Vertical pixel dimension of image<br>
  void*         pBw;            //!< [in/out] Pointer to memory for monochrome image or for the \link page27 DIB-format \endlink<br>
  void*         pRed;           //!< [in/out] Pointer to memory for red image channel<br>
  void*         pGreen;         //!< [in/out] Pointer to memory for green image channel<br>
  void*         pBlue;          //!< [in/out] Pointer to memory for blue image channel<br>
  int           channels;       //!< [in] to take from enum mex_channels<br>
  unsigned int  bitmask;        //!< [out] Bitmask of significant bits in image pixel data<br>
  unsigned long stdTicks;       //!< [out] Realized exposure standard ticks<br>
  unsigned long addTicks;       //!< [out] Realized exposure additional ticks<br>
  unsigned long channelBytes;   //!< [in/out] Realized amount of bytes per color channel<br>
  int           posX;           //!< [out] X-position code of a single image from an unassembled scan (::mexAcquisParams::runas = runas_scan)<br>
  int           posY;           //!< [out] Y-position code of a single image from an unassembled scan (::mexAcquisParams::runas = runas_scan)<br>
  unsigned long bytesperPixel;  //!< [in/out] Bytes per pixel and color (should be 1 or 2)<br>
  unsigned long orientation;    //!< [out] Flip conditions with respect to ::mex_orientation<br>
  unsigned long exposuretime;   //!< [out] exposure time - [microseconds}<br>
  int           colorMask;      //!< [out] A value from enum  ::mexColorMask <br>
  unsigned __int64 timestamp;   //!< [out] timestamp<br>
  unsigned long user_index;     //!< [in/out] instead of reserved[user_index]<br>
  unsigned long HdNr;           //!< Identifier, coming from frame header<br>
  unsigned long Time[4];        //!< time stamps for logging purposes<br>
  unsigned long reserved[4];    //!< Reserved for future use<br>
} mexImg;

I saw that my variable Mat frame has different parameters as: Mat frame;
frame.addref();
frame.allocator;
frame.channels();
frame.cols;
frame.rows;
frame.data;
frame.datastart;
frame.dataend;
frame.datalimit;
frame.depth();
frame.dims;
frame.flags;
frame.refcount;
frame.reserve();
frame.size;
frame.step;


I think that if I want to visualize the image by imshow("image", frame); I have to set all the parameters of the Mat structure.

Could you help to resolve the problem?