C / C++ / MFC

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multithreading NewYork10-Jan-04 23:46 NewYork 10-Jan-04 23:46  Dear Experts In my program,I need to have two independent loops that run at different speeds,30Hz and ~1KHz.They don't share a database.The second loop will only run if a condition in the first one is fulfilled.In this case the first one sends an integer to 2nd one and the second one should process the data with the given speed.this is the scenario,but I don't know how to implement it.At the moment I have a 30Hz timer in my application .At each interrupt of the timer,some function are called.I dont know where to put the second timer and how to start the 2nd thread.can anyone of u experts,helps a completly confused connovice Many thanks p.s.By the way my program is an SDI application How can I display a 3D graph with Nikolai Teofilov program: 3D Graph ActiveX Control? Anonymous10-Jan-04 22:53 Anonymous 10-Jan-04 22:53  Program that networks nukeler10-Jan-04 18:08 nukeler 10-Jan-04 18:08  I want to write a program that comunicates with another on the same network. There are probably a couple ways to do this but i have no idea where to look up info on doing this. Im completly new to this so if there are any tutorals on thos or examples links would be apperciated Re: Program that networks abc87610-Jan-04 18:16 abc876 10-Jan-04 18:16  Search for "Beej's Guide to Network Programming" on google.. easily available online.. It is very good beginning resource for socket programming to communicate on network hope that helps Muhammad Shoaib Khan http://geocities.com/lansolution Re: Program that networks valikac11-Jan-04 6:12 valikac 11-Jan-04 6:12  For a quick tutorial on winsock, check out this site. http://www.tangentsoft.net/wskfaq/ I highly recommend Network Programming for Microsoft Windows, Second Edition by Anthony Jones and Jim Ohmund. Kuphryn Re: Program that networks Jijo.Raj11-Jan-04 18:16 Jijo.Raj 11-Jan-04 18:16  A very very simple tutorial for sockect for beginners. A must have. http://www.gametutorials.com/Tutorials/Networking/Networking_Pg1.htm[^] Jijo ________________________________ Yesterday is history, Tomorrow is a mystery, But today is a present. Warning after importing bitmap Ernesto D.10-Jan-04 14:16 Ernesto D. 10-Jan-04 14:16  Hi all, ibe imported a bitmap to my app, and now i get the following warning: Build : warning : failed to (or don't know how to)build 'D:\Code\FixDesp\vsp.bmp' i imported the bitmap the "usual" way via the resource pane ->import... context menu option. im using VC6 in a WTL7 project any idea of what im doing wrong? Thanks! UPDATE: ibe imported an icon, and i got another warning for it! WTF?? Re: Warning after importing bitmap ohadp10-Jan-04 22:50 ohadp 10-Jan-04 22:50  Perhaps your file is a mis-named .bmp file ? perhaps it's a JPG or something like that ? Try to open it with ms-paint and see what happens, same goes for the icon. Re: Warning after importing bitmap Ernesto D.10-Jan-04 23:33 Ernesto D. 10-Jan-04 23:33  Thanks for your answer. the bitmap is a "standard" .bmp file, same goes for the icon its a normal .ico file. I just spent about 40 minutes triple-checking everything, and i have no clue as to what im i doing wrong, ibe imported bitmaps, icons, .wav files, and even custom resources tons of times before and i never had any trouble. Re: Warning after importing bitmap ohadp10-Jan-04 23:38 ohadp 10-Jan-04 23:38  It's starting to soudn interesting The next thing I'd try if I were you was to create a New Blank MFC App and throw the resources in there, see what happens. If it works it means something is messed up with your current-project, so you can start comparing project settings. If it doesn't work, well then either the bitmaps end up being corrupt or your VC is malfunctioning Re: Warning after importing bitmap Ernesto D.12-Jan-04 12:04 Ernesto D. 12-Jan-04 12:04  This is weird!, i just created a new project, imported the exact same icon & bitmap and got no warnings at all, i compared every project setting (twice) and they are excacly the same!, yet i still get the same warnings on the original app! as a side note, the original app works just fine (even with the warnings) weird isnt it?? VC++ - ODBC : can't reach the last records of my file.dbf Qadddd10-Jan-04 12:54 Qadddd 10-Jan-04 12:54  I used ODBC "dBase files" to access a file GSTAT.DBF, my code is the following : DBName = GlobalDSN + "Gstat;UID=;PWD:"; ErrMsg = ""; res = "SELECT DATUM,CASHT,MCASHT,NETROOM,MNETROOM from GSTAT WHERE (DATUM = #08/01/2004#)"; gDB.OpenEx(DBName,CDatabase::noOdbcDialog); TRY { rs.Open( CRecordset::forwardOnly, res ); NbRecord = rs.GetRecordCount(); } CATCH(CDBException, e) .... The problem is that it works perfecly on the 1061 first records, but it refuses to find me the records 1062-1068 (1068 being the last record in file)... and I wonder why ? I thought that it could be due to a problem with MSjet 4.0 dll because mine is quite "old" (as far as I can see, my version 4.0.4431.3 is from SP5. I downloaded the SP8 from MS, but when I was to install it, I receive a message from the installation program saying that my version is too old and that I should have at least the SP3 ... Once again, I don't know why Any idea on 1st or 2nd of my problem will be appreciated DD Re: VC++ - ODBC : can't reach the last records of my file.dbf Qadddd11-Jan-04 13:03 Qadddd 11-Jan-04 13:03  ok, i have found my 1st problem ... it is due to the wrong date format I passed in the WHERE clause, it must me in the US format (MM/DD/YYYY) and I was giving it in french format (DD/MM/YYYY) ... So, I don't need to upgrade the MSJet stuff Nevertheless, I would like to know if anyone has an idea on the strange message displayed by the prog supposed to upgrade MSJet ... Regards DD .asm file compilation Alexander M.,10-Jan-04 11:47 Alexander M., 10-Jan-04 11:47  who knows a good way to compile .asm files (like microsoft did with files like "memset.asm")? thx for your answers, Alexander M. Don't try it, just do it! Re: .asm file compilation ZoogieZork10-Jan-04 12:05 ZoogieZork 10-Jan-04 12:05  You can use the ml.exe utility in the Vc7/bin directory of VS.NET. Documentation: http://msdn.microsoft.com/library/en-us/vcmasm/html/vclrfML.asp[^] Alternatively, you can probably also use the free NASM utility: http://nasm.sourceforge.net/[^] - Mike #include dependency reduction D. Michael Traub10-Jan-04 11:19 D. Michael Traub 10-Jan-04 11:19  I've recently joined a project where the #includes are a little out of control. Changes in header files trigger compilation of unrelated source files. I've done a little reduction by hand, but it is only a drop in the proverbial bucket. Is there a utility out there that identifies redundant #includes in C++ projects? Re: #include dependency reduction Chris Richardson11-Jan-04 0:03 Chris Richardson 11-Jan-04 0:03  Well, I'm not sure if it's exactly what you need, but I've written an article here that will generate a tree of #include dependancies. You can take a look at it here if you are interested: http://www.codeproject.com/useritems/includefinder.asp[^] Good luck Chris Richardson what is c++ ?? Anonymous10-Jan-04 4:22 Anonymous 10-Jan-04 4:22  please tell me, i want to know it very much... thanks!~ Re: what is c++ ?? Maximilien10-Jan-04 5:07 Maximilien 10-Jan-04 5:07  c++ is a programming language that uses object oriented paradigms. Maximilien Lincourt "Never underestimate the bandwidth of a station wagon filled with backup tapes." ("Computer Networks" by Andrew S Tannenbaum ) Re: what is c++ ?? Jörgen Sigvardsson10-Jan-04 7:17 Jörgen Sigvardsson 10-Jan-04 7:17  Hey now. You can use object oriented paradigms with C++, as well as procedural and functional paradigms. It isn't necessarily OO, which is exactly what makes C++ great. -- If there was a problem, Yo, I'll solve it! Check out the hook while my DJ revolves it. Re: what is c++ ?? DaFrawg11-Jan-04 5:54 DaFrawg 11-Jan-04 5:54  It's great :P Re: what is c++ ?? Jijo.Raj11-Jan-04 18:33 Jijo.Raj 11-Jan-04 18:33  For a simple and nice intorduction to CPP, please refer the following link. Dont worry. its too simple. And you can find many simple tutorials about CPP for beginners in this site. http://cprogramming.com/begin.html[^] Regards, Jijo. ________________________________ Yesterday is history, Tomorrow is a mystery, But today is a present. How can I rename random files? tadees10-Jan-04 1:43 tadees 10-Jan-04 1:43  I'm trying to write a program that will retrieve a list of file names (under windows) from a folder (e.g - Atually tell me (or the program) what the folder contains). When it has the list of names, I want the program to copy the respective files to a different folder and then rename them systematically (e.g - 1, 2, 3, 4, 5...etc). Later on, I want the program to give the copied files the same names as their original files. (The files will either be (.doc) or (.html)) I've pretty new to programming, and have read about file streams, but have only managed to find out how to work with them when I know the filename beforehand (e.g - "File.open ("Doc1.txt", ios::out);"). I'd be grateful if anyone could help me out with this, or at least give me the title of a book that might explain things. Hope you can help. Thanks! Re: How can I rename random files? Antti Keskinen10-Jan-04 2:36 Antti Keskinen 10-Jan-04 2:36  First, the file enumeration. You can use the MFC class CFileFind to enumerate a directory for files. You can extract each filename in question seperately from the object, there is a member function available that will return the filename of a matching file. Using this filename, you open the file into a CFile object. Then, you construct and create a new CFile object to the target directory. After that, it is just reading from the first CFile stream and writing into the second one. Alternatively, if you are not bound to platform-independency (that is, you can use system console commands), then you should consider using the system to copy files directly. For example, commanding system("copy *.* <target dir> ) would copy all files to the target directory on a Windows platform. See the documentation for CFile and CFileFind. These MFC classes encapsulate the Win32 API concepts File and FileFind. Both MFC documentations have links to the respective Win32 ones if you are unable to use MFC. -Antti Keskinen ---------------------------------------------- The definition of impossible is strictly dependant on what we think is possible. Re: How can I rename random files? Ernesto D.10-Jan-04 14:54 Ernesto D. 10-Jan-04 14:54  I suggest taking a look at this API functions in your MSDN documentation CopyFile() MoveFile() FindFirstFile() FindNextFile() FindClose() you can go thru an entire directory (or even drive)with the Find functions, writte your own file-renaming alogarithm via CString manipulation routines (or just the good old strcat, strcpy, etc), and use MoveFile() and CopyFile() to rename / copy the files. As a tip, i suggest using a recursive function to do the file ennumeration. HTH.

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