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CoCreateGuid Example

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Submitted on: 10/1/2019 11:37:56 PM
By: Nicholas Forystek  
Level: Advanced
User Rating: Unrated
Compatibility: VB 4.0 (32-bit), VB 5.0, VB 6.0
Views: 9687
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     Globally Unique Identifier generate function as well as a IsGuid() function to test if the GUID is a string representation seemingly of one. I found some other examples of using CoCreateGuid, however, in repeating the call I was not satisfied with the unique random display, some have portions that repeat, some didn't seem to fill the hex values or that is they could possibly return more then one leading zero. So after some attempts, I arrived at this conclusion that in repeat debug satisfies GIUD requirements (while the CoCreateGuid returns a unique Guid, in structure, the text representation I believe in Visual Basic because of it's strings is especially indifferent to be true in view, and the Co in CoCreateGuid, being the cooperative mention, not fully platform independent).
 
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10/3/2019 6:09:26 PMBonnie West

Here's a better way of generating a GUID:

Smallest but fastest GUID generator function (using API)
http://web.archive.org/web/20150531071254/http://www.planet-source-code.com/vb/s cripts/ShowCode.asp?txtCodeId=74588&lngWId=1


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10/3/2019 6:14:01 PMBonnie West

For some reason, PSC corrupted my link above (/scripts/ became /s cripts/). I'll try it again:

http://web.archive.org/web/20150531071254/http://www.planet-source-code.co m/vb/scripts/ShowCode.asp?txtCodeId=74588&lngWId=1


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10/3/2019 6:19:08 PMBonnie West

Well, PSC screwed up again (this time, .com/ became .co m/). I give up. Just manually fix the broken links above if you're interested in checking them out.


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