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| Submitted on: |
9/14/2006 9:10:16 AM |
| By: |
Rajneesh Noonia
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| Level: |
Advanced |
| User Rating: |
Unrated |
| Compatibility: |
VB 3.0, VB 4.0 (16-bit), VB 4.0 (32-bit), VB 5.0, VB 6.0, VB Script |
| Views: |
8238 |
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(About the author) |
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Folder Watch: In lot of application you need to look or wait for some file in folder or for some specific file. Normally developers use polling techniques to a poll folder or file with some frequency. But method is wastage of CPU resources and is not very real time.
With FolderWatcher you can watch for events in particular folder or sub folders and take actions only when data is arrived. It uses ReadDirectoryChangesW function from Library kernel32 to monitor the changes in folder. This technique is call callback and is very efficient technique. Windows operating systems uses callback techniques almost every where (Off course whenever applicable)
* Install utilities.dll and folderwatcher.dll and run folderwatchtest.vbp
* You need Utilities.dll published on same site under Vb 6.0 with name “Advanced Utilities”
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Other User Comments
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 9/14/2006 9:33:40 AM: Pierre AOUN
You took the code of an example already on this site and it was much simpler: http://www.planetsourcecode.com/vb/scripts/ShowCode.asp?txtCodeId=61052&lngWId=1
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9/14/2006 10:11:42 AM: Cobein
mmmmm It looks sooo familiar :S
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9/16/2006 4:45:38 AM: MPCole
Doesn't seem to work. Loop in Class makes the app instable.
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9/18/2006 2:09:03 AM: Rajneesh Noonia
This code is tested and is working in production enviornment.You need to regsiter the dependencies (Utilities.dll) posted on same site.
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10/24/2006 10:34:41 AM: j-t
WHY HAVE YOU POSTED CODE THAT DOES NOT WORK OR IS INCOMPLETE. EITHER POST A COMPLETE WORKING VERSION OR DONT BOTHER NEXT TIME!!
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2/11/2009 3:50:34 AM: rafu
please provide all complete code.
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2/13/2009 7:34:34 AM: Rajneesh Noonia
In the article i have mentioned that "You need Utilities.dll published on same site under Vb 6.0 with name “Advanced Utilities” "
The link for code is http://www.planet-source-code.com/vb/scripts/ShowCode.asp?txtCodeId=66555&lngWId=1
Regards
Rajneesh
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