<div class="content"><p>The structure of the COMM_CO_GUID packet element is as
follows.</p><dl>
<dd>
<div><pre> typedef struct _COMM_CO_GUID {
   USHORT CommType;
   ULONG Length;
   ULONG DataLength;
   GUID Data;
 } COMM_CO_GUID,
  *PCOMM_CO_GUID;
</pre></div>
</dd></dl><p><b>CommType:</b>   A 16-bit, unsigned
integer that indicates the type of this <a href="194f8fff-d903-44b7-9530-c66f5366f8c7" data-linktype="relative-path">COMM_PACKET</a> element. MUST
be set to 0x000F.</p><p><b>Length:</b>   A 32-bit, unsigned integer
that indicates the length in bytes of the data following the Length field. MUST
be 0x00000014.</p><p><b>DataLength:</b>   A 32-bit, unsigned
integer that indicates the length in bytes of the <a href="2e457199-2dc1-46c3-8aa6-b2d8e016f95c#gt_f49694cc-c350-462d-ab8e-816f0103c6c1" data-linktype="relative-path">GUID</a> field. MUST be
0x00000010.</p><p><b>Data:</b>   MUST be a field of type <a href="../ms-dtyp/4926e530-816e-41c2-b251-ec5c7aca018a" data-linktype="relative-path">GUID</a>
that contains the GUID that denotes the <a href="2e457199-2dc1-46c3-8aa6-b2d8e016f95c#gt_576a8417-dd00-4f9e-b52f-c9a2e3766a8a" data-linktype="relative-path">change order</a> that is being
processed.</p></div>