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By Chris De Herrera 
Copyright 1998-2007
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COM
By Terence "Dr. CE" Goggin
Copyright 2000, 2001 Terence Goggin
 Version 1.00  Revised 4/20/01

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Topics

1. How do I generate a GUID on a PocketPC?



1. How do I generate a GUID on a PocketPC?
I don't think there is a function to create a GUID either, so I wrote a
simple function that creates a GUID string.   This function conforms to
standard methods for generating a GUID (based on documentation I was able to
find).
The function puts the GUID in a VARIANT bstring....



BOOL CreateGuid(_variant_t *lValue)
{
TCHAR wGuid[37];
SYSTEMTIME systime;
FILETIME filetime;

// construct GUID
GetSystemTime(&systime);
SystemTimeToFileTime(&systime,&filetime);
DWORD tick=GetTickCount();
DWORD highWord=filetime.dwHighDateTime+0x146BF4;


// convert GUID to a string
wsprintf(wGuid,TEXT("%08.8x-%04.4x-%04.4x-%04.4x-%04.4x%04.4x%04.4x"),
      filetime.dwLowDateTime,
      LOWORD(highWord),
      HIWORD(highWord |0x10000000),
      LOWORD(rand()),
      HIWORD(tick),
      LOWORD(tick),
      LOWORD(rand()));

*lValue=wGuid;
return TRUE;
}

For more information: http://www.IdeaCon.com
Credits: Andrew Wingers ( www.IdeaCon.com )

Terence Goggin's DoctorCE.com site - Custom Windows CE development/consulting services.

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