Delphi printing to Zebra printer -

-

i have written function prints out zplii data zebra printer shown below 

var   st : string;  startdocument(docname); startpage; try i:=0 datatoprint.count-1  begin   st:=formatprintline(i);    try     escape(printerhandle,passthrough,length(st),pansichar(st),nil);    except on e:exception     begin       getwin32apierrormessage(ferrorcode,ferrortext);       raise eprinter.createfmt('printer write error %d'+#13+                                'while printing '+printername+#13+                                errortext,[errorcode]);      end;    end;  end;  endpage;  enddocument;

i have tested label data using command prompt print text file , label prints out correctly cannot print application. if pause printer can see job gets sent printer , size of job 2.12kb, size label should be, nothing prints out. light on zebra printer data lights nothing print. have tried 2 of zebra printers own, not printer issue. guess @ point maybe program isn't sending entire label data printer , end never received when trace through send request, everthing sent properly. printer shows job has 0/0 pages label cannot understand why not sending label. there special needs go @ end of label data besides ^xz termination character? using delphi xe3 if helps.

thanks everyone's able print labels using following changes:

st: ansistring; ... startdocument(docname); startpage; try  i:=0 datatoprint.count-1   begin    st:=formatprintline(i);     try      writeprinter(printerhandle,pchar(st),length(st),n);     except on e:exception      begin        getwin32apierrormessage(ferrorcode,ferrortext);        raise eprinter.createfmt('printer write error %d'+#13+                                'while printing '+printername+#13+                                errortext,[errorcode]);       end;     end;   end;  endpage;  enddocument;

i had change writeprinter instead of escape. escape did not print out after change st type ansistring writeprinter successful.


Comments

Post a Comment

Popular posts from this blog

ios - UICollectionView Self Sizing Cells with Auto Layout -

-
Image
i'm trying self sizing uicollectionviewcells working auto layout, can't seem cells size content. i'm having trouble understanding how cell's size updated contents of what's inside cell's contentview. here's setup i've tried: custom uicollectionviewcell uitextview in contentview. scrolling uitextview disabled. the contentview's horizontal constraint is: "h:|[_textview(320)]", i.e. uitextview pinned left of cell explicit width of 320. the contentview's vertical constraint is: "v:|-0-[_textview]", i.e. uitextview pinned top of cell. the uitextview has height constraint set constant uitextview reports fit text. here's looks cell background set red, , uitextview background set blue: i put project i've been playing on github here . updated ios 9 after seeing github solution break under ios 9 got time investigate issue fully. have updated repo include several examples of different configurations s
Read more

node.js - ldapjs - write after end error -

-
i have created authentication service using following code in node.js , ldapjs. var when = require ('when'); var authenticationerror = require('../errors/authenticationerror'); var sessionmanagerservice = require('./sessionmanagerservice'); var ldap = require('ldapjs'); var client = ldap.createclient({ url: 'ldaps://ad.mycompany.com:636', tlsoptions: {'rejectunauthorized': false} }); module.exports = { signin: function (email, password) { return this.ldapbind(email, password).then( function () { return sessionmanagerservice.createsessionhash({email: email}); } ); }, ldapbind: function (email, password) { var deferred = when.defer(); client.bind(email, password, function(err) { if (err) { deferred.reject (new authenticationerror('invalid username and/or password!', 'authentication.signin.error')
Read more

DOM Manipulation in Wordpress (and elsewhere) using php -

-
DOM Manipulation in Wordpress (and elsewhere) using php - i'm quite new dom manipulation world , head start in order avoid mutual errors. i looking efficient way manipulate content generated wordpress using php. @ moment using simple html dom seems work fine. found domdocument , few others , helpfull if cleared out 1 faster, improve or @ to the lowest degree generate less errors in case of bad markup. also on side can explain syntax (instead of $html @$html) thank much php wordpress domdocument simple-html-dom
Read more