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If you have delphi or c++ builder maybe but I don't really know. Sorry.
- Matt Newman / Windows XP Activist
-Sonork ID: 100.11179
"You can't seriously believe that you could get away with suing someone over quoting text from a message posted in a public forum, can you?" - John Simmons
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Hello guys,
I would like to create a program that can compare lots of files in different folders and find the identical files. If I compare it byte by byte for each file it's going to take a lot of time. Do you have any good idea?
Regards,
Hiu Sing Ngai
http://www.firegraphic.com
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you could generate a hash value for each file using a cryptographic hash function. then, just compare the hash values. it will always find matches, though it has a possibility of also finding false positives (in case two different files work out to identical hashes), but the odds are low.
-c
To explain Donald Knuth's relevance to computing is like explaining Paul's relevance to the Catholic Church. He isn't God, he isn't the Son of God, but he was sent by God to explain God to the masses.
/. #3848917
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If one uses the MD5 hash algorithm then the odds are practical zero.
Best regards,
Alexandru Savescu
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Why not compute the CRC32 value of each file?
You can find this algorithm Here
If 2 files are identical, they have the same Checksum value (32 bits)
Hello World!!! 
from Raphaël
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Well firstly just compare files on file size, and then only do an actual contents comparison if the two files have exactly the same size. This should speed it up quite a bit (unless all your files are the same size, that is)
--
Help me! I'm turning into a grapefruit!
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First Sort file list by size (smallest first)
Then for each file, compare against others in list. If size is different, move to next file (do not compare other files in list - no need since you have already sorted by size)
If sizes are the same, then compare contents.
I have already written a little utility to do this myself and I can email you the source if you like.
Paresh Solanki
"Set you're faces to stunned..."
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you should determine the crc or the checlsum of each files and then compare them...
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Now I want to made a dialog which can preview some image files such as bmp,jpg and so on.
Then I found an ActivexContol named Thumbctl which looks very good. but it dosent work. I cant insert it to my VC++ project. the Error is"unable to open the activex control,make sure the control contains a valid type library", I have tried this in diffrent pc and got the same result.
my system" windows XP, IE 6.0"
I need help. thanks a lot
<--MFC-->
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have you tried contacting the authors of Thumbctl?
-c
To explain Donald Knuth's relevance to computing is like explaining Paul's relevance to the Catholic Church. He isn't God, he isn't the Son of God, but he was sent by God to explain God to the masses.
/. #3848917
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How can I do anything with pdf files? Is it
possible to open the file and read in a row of
pixels?
Please, any response any one can give me will be greatly appreciated.
Sincerely,
Danielle (an overworked graduate student)
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A pdf file isn't an image file, so it doesn't contain pixel descriptions, instead it contains descriptions of where to lay stuff out. if you need a line of pixels, then you'll need to load the whole pdf file, render it to a bitmap, and get the line from there
--
Help me! I'm turning into a grapefruit!
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well ppl!
i have got a real trouble here ,
i am trying to send the 'APPE' (Append) to a FTP server
the other commands like REST or TYPE go well but the data storing or retriving commands give error
WINSOCK error 10038 - socket operaton on non-socket
what to do about it
how to remove it so that i be able to send some data !
PLZZZZZZZZZZ help me
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Hi all,
I'm looking to make a list of common code bugs so I can toss the basic code into a c++ console app and compile so I can practice debugging.
Please let me know if this is a stupid idea.
Jeff
newb: Jack of all Trades
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Nishant S wrote:
You don't have to go to all that bother. Just try writing an app of a basic level of complexity and the errors will come on their own. Then you can do all the debugging you want.
So unbelievably true 
- Matt Newman / Windows XP Activist
-Sonork ID: 100.11179
"You can't seriously believe that you could get away with suing someone over quoting text from a message posted in a public forum, can you?" - John Simmons
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True indeed! 
Best regards,
Alexandru Savescu
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how can i handle Events Sinking with pure c++, no MFC or ATL??.
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thanx a lot
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Hey Guys
I have created a list view derived class and have passed it in to a Document Template and it displays as a plain white window. I was wondering how do i actually get the list ctrl to appear inside it.
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Do you like a grid?
Kuphryn
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What i want to do is just have a standard list control ie CListctrl displayed inside this CListView. But i can't get the list view to display how to i create the list view inside the window.
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You need to superclass it.
To hangover to remember how..
/M
- Don't sweat the petty things, and don't pet the sweaty things.
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