QT5 LNet installation error: Forward declaration not solved

[alanphys]

Problem
Trying to install lnet in Lazarus from the online package manager and from git gives

lclnet.pas(45,15) Error: Forward declaration not solved "HandleIgnoreError(TLHandle);"
lclnet.pas(46,15) Error: Forward declaration not solved "HandleIgnoreWrite(TLHandle);"
lclnet.pas(47,15) Error: Forward declaration not solved "HandleIgnoreRead(TLHandle);"
lclnet.pas(48,15) Error: Forward declaration not solved "InternalUnplugHandle(TLHandle);"
lclnet.pas(50,15) Error: Forward declaration not solved "HandleEvents(Int64;LongWord);"
lclnet.pas(58,14) Error: Forward declaration not solved "AddHandle(TLHandle):Boolean;"

System
Fedora 30
KDE 5/QT 5.12.4
Lazarus 2.0.6
LNet 0.66

Cause
QT5 not defined in lclnet.pas

Workaround
Add
{$ifdef LCLQT5} {$i lclgtkeventer.inc} // identical code ;) {$endif}
before end statement in lclnet.pas

Regards
Alan

[almindor]

Hey, I think the preprocessor ifdefs changed in newer lazarus and need to be updated. You need to use the QT "lcl" eventer for this tho otherwise it won't work as the main "event loop" won't connect. I find it interesting that the gtk one worked for you. Ales st 5. 2. 2020 o 3:03 Alan Chamberlain <[email protected]> napísal(a):

…

*Problem* Trying to install lnet in Lazarus from the online package manager and from git gives lclnet.pas(45,15) Error: Forward declaration not solved "HandleIgnoreError(TLHandle);" lclnet.pas(46,15) Error: Forward declaration not solved "HandleIgnoreWrite(TLHandle);" lclnet.pas(47,15) Error: Forward declaration not solved "HandleIgnoreRead(TLHandle);" lclnet.pas(48,15) Error: Forward declaration not solved "InternalUnplugHandle(TLHandle);" lclnet.pas(50,15) Error: Forward declaration not solved "HandleEvents(Int64;LongWord);" lclnet.pas(58,14) Error: Forward declaration not solved "AddHandle(TLHandle):Boolean;" *System* Fedora 30 KDE 5/QT 5.12.4 Lazarus 2.0.6 LNet 0.66 *Cause* QT5 not defined in lclnet.pas *Workaround* Add {$ifdef LCLQT5} {$i lclgtkeventer.inc} // identical code ;) {$endif} before end statement in lclnet.pas Regards Alan — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#7?email_source=notifications&email_token=AAO4J3W3WQB7JJITZA565Q3RBKFIDA5CNFSM4KQIE6T2YY3PNVWWK3TUL52HS4DFUVEXG43VMWVGG33NNVSW45C7NFSM4ILE6A5Q>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAO4J3SEKVO2MERKLJ5QGO3RBKFIDANCNFSM4KQIE6TQ> .

[alanphys]

Yes, the new version defines LCLQT5. I'm not seeing an lclqteventer.inc. I just copied your existing LCLQT declaration which uses the lclgtkeventer.inc.

So far everything seems to be running OK, but I am only using the TLHTTPServer component.
Regards
Alan