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Thanks guys I'm writing a project that sends 5250 streams to a display file that is defined with DDS USRDFN record. It seems that the problem that I have is that I don't know how to transfer 5250 control characters. I tried using record I/O functions but it always returns errno = 3102. So, I was thinking that by using binary streams I could make it work. Here is an example of what I was trying to do (I was trying to make a print screen here). And here is an example of how it is done by CL: http://www.sentinex.com/getdsp.html #include <errno.h> #include <stdio.h> #include <recio.h> #include <signal.h> #include <stdlib.h> _RFILE *fp; void handler ( int ); int main(void) { _RIOFB_T *rfb; char buf[1918]; signal (SIGALL, handler ); if (( fp = _Ropen ( "GETDSPC","ar+" )) == NULL ) { printf ( "Could not open the display file\n" ); exit ( 1 ); } _Rformat ( fp,"GET" ); memset(buf,' ',1918); buf[0] = 00; buf[1] = 02; buf[2] = 10; buf[3] = 00; buf[4] = 73; buf[5] = 04; buf[6] = 62; errno = 0; rfb = _Rwriterd ( fp, &buf, 6 ); _Rclose ( fp ); } void handler ( int sig ) { printf ( "message = %7.7s\n", _EXCP_MSGID ); printf ( "program continues \n" ); signal ( SIGALL, handler ); } ----- Original Message ----- From: <c400-l-request@xxxxxxxxxxxx> To: <c400-l@xxxxxxxxxxxx> Sent: Friday, July 30, 2004 7:00 PM Subject: C400-L Digest, Vol 2, Issue 48 > Send C400-L mailing list submissions to > c400-l@xxxxxxxxxxxx > > To subscribe or unsubscribe via the World Wide Web, visit > http://lists.midrange.com/mailman/listinfo/c400-l > or, via email, send a message with subject or body 'help' to > c400-l-request@xxxxxxxxxxxx > > You can reach the person managing the list at > c400-l-owner@xxxxxxxxxxxx > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of C400-L digest..." > > > Today's Topics: > > 1. Re: Example of using Display Files as binary stream files > (Vince Rowe) > 2. Re: using display files in C (Boris) > 3. Re: Re: using display files in C (phillip.groschwitz@xxxxxxxxx) > 4. Re: Example of using Display Files as binary stream files > (Simon Coulter) > 5. RE: Example of using Display Files as binary stream files > (Jevgeni Astanovski) > 6. Re: Example of using Display Files as binary stream files > (Simon Coulter) > > > ---------------------------------------------------------------------- > > message: 1 > date: Thu, 29 Jul 2004 13:09:40 -0400 > from: Vince Rowe <vrowe@xxxxxxxxxxxxxxxx> > subject: Re: [C400-L] Example of using Display Files as binary stream > files > > Boris, > > I couldn't make it work, either, so I wrote the program in modules, one module > that reads/writes to the display file using RecordIO, and another that uses > embeded SQL to get data from DB2. It's clumsy, but you cannot have RecorIO > and stream IO in the same module, apparently. > > Vince Rowe > MIS > Marietta Corp. > > On Thursday 29 July 2004 11:41 am, Boris wrote: > > Hi All, > > Does anybody have an example of using Display files with fopen, fwrite... > > functions? All I could find in the documentation that this is possible. > > > > Or an example of a C program writing into a USRDFN record. > > > > Any input is highly appreciated > > Thanks > > _______________________________________________ > > > > ------------------------------ > > message: 2 > date: Thu, 29 Jul 2004 21:04:43 +0200 > from: "Boris" <bbresc512@xxxxxxxxxx> > subject: [C400-L] Re: using display files in C > > Hi Rob, > thanks a lot for you input. After days of desperate trying I'm leaning to > that exact direction, yet not ready to give up. > I'm coming from windows/linux environment where C and Java has been all I > need so far. I was trying to avoid learning another, very platform oriented, > language, especially while hearing in the background about how RPG may > become obsolete. > > I just hope I will not be spending a lot of time trying to get C and RPG > working together (for example parameter passing and type compatibility). Is > there any learning material or good books that you can point out? > > Thanks > Boris. > ----- Original Message ----- > From: <c400-l-request@xxxxxxxxxxxx> > To: <c400-l@xxxxxxxxxxxx> > Sent: Thursday, July 29, 2004 7:00 PM > Subject: C400-L Digest, Vol 2, Issue 47 > > > > Send C400-L mailing list submissions to > > c400-l@xxxxxxxxxxxx > > > > To subscribe or unsubscribe via the World Wide Web, visit > > http://lists.midrange.com/mailman/listinfo/c400-l > > or, via email, send a message with subject or body 'help' to > > c400-l-request@xxxxxxxxxxxx > > > > You can reach the person managing the list at > > c400-l-owner@xxxxxxxxxxxx > > > > When replying, please edit your Subject line so it is more specific > > than "Re: Contents of C400-L digest..." > > > > > > Today's Topics: > > > > 1. Example of using Display Files as binary stream files (Boris) > > 2. RE: Example of using Display Files as binary stream files > > (Bob Crothers) > > > > > > ---------------------------------------------------------------------- > > > > message: 1 > > date: Thu, 29 Jul 2004 17:41:52 +0200 > > from: "Boris" <bbresc512@xxxxxxxxxx> > > subject: [C400-L] Example of using Display Files as binary stream > > files > > > > Hi All, > > Does anybody have an example of using Display files with fopen, fwrite... > functions? All I could find in the documentation that this is possible. > > > > Or an example of a C program writing into a USRDFN record. > > > > Any input is highly appreciated > > Thanks > > > > ------------------------------ > > > > message: 2 > > date: Thu, 29 Jul 2004 10:18:42 -0500 > > from: "Bob Crothers" <bob@xxxxxxxxxxxxxx> > > subject: RE: [C400-L] Example of using Display Files as binary stream > > files > > > > Boris, > > > > This is where my lack of "purity" will shine thru. > > > > But, I prefer to use each tool for what it is best at. C is very good at > > string manipulation, bit twiddling, buffer manipulation, and crazy screwy > > weird stuff. RPG is no fun at all doing these kind of things. > > > > C sucks at working with "native" AS/400 externally described files (device > > or database). On the other hand, RPG excels at doing these things! > > > > So, I use RPG modules to do the normal as/400 file manipulation and C to > do > > the "fun" stuff. > > > > Yes, you can use a hammer to drive a screw...but it wont be pretty and > > generally makes a mess. > > > > JMHO, > > Bob > > > > > -----Original Message----- > > > From: c400-l-bounces@xxxxxxxxxxxx [mailto:c400-l-bounces@xxxxxxxxxxxx] > On > > > Behalf Of Boris > > > Sent: Thursday, July 29, 2004 10:42 AM > > > To: c400-l@xxxxxxxxxxxx > > > Subject: [C400-L] Example of using Display Files as binary stream files > > > > > > Hi All, > > > Does anybody have an example of using Display files with fopen, > fwrite... > > > functions? All I could find in the documentation that this is possible. > > > > > > Or an example of a C program writing into a USRDFN record. > > > > > > Any input is highly appreciated > > > Thanks > > > _______________________________________________ > > > This is the C programming iSeries / AS400 (C400-L) mailing list > > > To post a message email: C400-L@xxxxxxxxxxxx > > > To subscribe, unsubscribe, or change list options, > > > visit: http://lists.midrange.com/mailman/listinfo/c400-l > > > or email: C400-L-request@xxxxxxxxxxxx > > > Before posting, please take a moment to review the archives > > > at http://archive.midrange.com/c400-l. > > > > > > > > ------------------------------ > > > > _______________________________________________ > > This is the C programming iSeries / AS400 (C400-L) digest list > > To post a message email: C400-L@xxxxxxxxxxxx > > To subscribe, unsubscribe, or change list options, > > visit: http://lists.midrange.com/mailman/listinfo/c400-l > > or email: C400-L-request@xxxxxxxxxxxx > > Before posting, please take a moment to review the archives > > at http://archive.midrange.com/c400-l. > > > > > > > > End of C400-L Digest, Vol 2, Issue 47 > > ************************************* > > > > __________ NOD32 1.826 (20040729) Information __________ > > > > This message was checked by NOD32 antivirus system. > > http://www.nod32.com > > > > > > > > ------------------------------ > > message: 3 > date: Thu, 29 Jul 2004 14:32:33 -0400 > from: phillip.groschwitz@xxxxxxxxx > subject: Re: [C400-L] Re: using display files in C > > > >I'm coming from windows/linux environment where C and Java has been all I > >need so far. I was trying to avoid learning another, very platform > oriented, > >language, > > You could use embedded sql in C. You'll need to learn a few things > specific to the iSeries but not a whole language, and the sql code will be > a lot more portable than the RPG code. > > >especially while hearing in the background about how RPG may > >become obsolete. > > I doubt that'll happen anytime soon. > > >I just hope I will not be spending a lot of time trying to get C and RPG > >working together (for example parameter passing and type compatibility). > >Is there any learning material or good books that you can point out? > > This may be helpful: > http://www.opensource400.org/callc.html > > The RPG400-L list may be helpful. > > Phil > > > > > ------------------------------ > > message: 4 > date: Fri, 30 Jul 2004 15:36:25 +1000 > from: Simon Coulter <shc@xxxxxxxxxxxxxxxxx> > subject: Re: [C400-L] Example of using Display Files as binary stream > files > > > On 30/07/2004, at 1:41 AM, Boris wrote: > > > Does anybody have an example of using Display files with fopen, > > fwrite... functions? All I could find in the documentation that this > > is possible. > > Display files are record oriented files so use the _R functions not the > stream functions. The ILE C Programmer's has examples. See Chapter 8 > Using Device Files in Your ILE C Programs > > Note: Section 8.4 says that fopen, fwrite, etc are only useful for > message subfiles. > > Regards, > Simon Coulter. > -------------------------------------------------------------------- > FlyByNight Software AS/400 Technical Specialists > > http://www.flybynight.com.au/ > Phone: +61 3 9419 0175 Mobile: +61 0411 091 400 /"\ > Fax: +61 3 9419 0175 \ / > X > ASCII Ribbon campaign against HTML E-Mail / \ > -------------------------------------------------------------------- > > > > > ------------------------------ > > message: 5 > date: Fri, 30 Jul 2004 09:09:54 +0300 > from: "Jevgeni Astanovski" <J.Astanovski@xxxxxxxxxxxx> > subject: RE: [C400-L] Example of using Display Files as binary stream > files > > Can I ask you one thing, Boris? > Why are you so definite in trying to use fopen and fwrite? _Ropen and _Rwrite are intended to do the job. > And they do it despite of what Bob is saying - its not driving a screw with a hammer. Nothing but C programming. > > Another question is if display files can be read nad written as streams. Is it really possible formally - I mean does OS/400 allow this sort of tricks? > > Jevgeni. > > > > > -----Original Message----- > > From: Boris [mailto:bbresc512@xxxxxxxxxx] > > Sent: Thursday, July 29, 2004 6:42 PM > > To: c400-l@xxxxxxxxxxxx > > Subject: [C400-L] Example of using Display Files as binary > > stream files > > > > > > Hi All, > > Does anybody have an example of using Display files with > > fopen, fwrite... functions? All I could find in the > > documentation that this is possible. > > > > Or an example of a C program writing into a USRDFN record. > > > > Any input is highly appreciated > > Thanks > > _______________________________________________ > > This is the C programming iSeries / AS400 (C400-L) mailing list > > To post a message email: C400-L@xxxxxxxxxxxx > > To subscribe, unsubscribe, or change list options, > > visit: http://lists.midrange.com/mailman/listinfo/c400-l > > or email: C400-L-request@xxxxxxxxxxxx > > Before posting, please take a moment to review the archives > > at http://archive.midrange.com/c400-l. > > > > > > > > ------------------------------ > > message: 6 > date: Fri, 30 Jul 2004 16:36:40 +1000 > from: Simon Coulter <shc@xxxxxxxxxxxxxxxxx> > subject: Re: [C400-L] Example of using Display Files as binary stream > files > > > On 30/07/2004, at 4:09 PM, Jevgeni Astanovski wrote: > > > Another question is if display files can be read nad written as > > streams. Is it really possible formally - I mean does OS/400 allow > > this sort of tricks? > > No. Only message sub-files can be treated as streams--though why anyone > would want to is beyond me. > > Regards, > Simon Coulter. > -------------------------------------------------------------------- > FlyByNight Software AS/400 Technical Specialists > > http://www.flybynight.com.au/ > Phone: +61 3 9419 0175 Mobile: +61 0411 091 400 /"\ > Fax: +61 3 9419 0175 \ / > X > ASCII Ribbon campaign against HTML E-Mail / \ > -------------------------------------------------------------------- > > > > > ------------------------------ > > _______________________________________________ > This is the C programming iSeries / AS400 (C400-L) digest list > To post a message email: C400-L@xxxxxxxxxxxx > To subscribe, unsubscribe, or change list options, > visit: http://lists.midrange.com/mailman/listinfo/c400-l > or email: C400-L-request@xxxxxxxxxxxx > Before posting, please take a moment to review the archives > at http://archive.midrange.com/c400-l. > > > > End of C400-L Digest, Vol 2, Issue 48 > ************************************* > > __________ NOD32 1.827 (20040729) Information __________ > > This message was checked by NOD32 antivirus system. > http://www.nod32.com > >
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