[Lazarus] Postgres Cannot connect

[Tom Russell]

Its like this:

Procedure InitialisePostgres3;

begin
  inc(RefCount);
  if RefCount = 1 then
    begin
    Postgres3LibraryHandle := loadlibrary(pqlib);
    if Postgres3LibraryHandle = nilhandle then
      begin
      RefCount := 0;
      Raise EInOutError.Create('Can not load PosgreSQL client. Is it
installed? ('+pqlib+')');
      end;

    pointer(PQconnectStart) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQconnectStart');
    pointer(PQconnectPoll) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQconnectPoll');
    pointer(PQconnectdb) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQconnectdb');
    pointer(PQsetdbLogin) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQsetdbLogin');
    pointer(PQfinish) := GetProcedureAddress(Postgres3LibraryHandle,'PQfinish');
    pointer(PQconndefaults) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQconndefaults');
    pointer(PQconninfoFree) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQconninfoFree');
    pointer(PQresetStart) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQresetStart');
    pointer(PQresetPoll) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQresetPoll');
    pointer(PQreset) := GetProcedureAddress(Postgres3LibraryHandle,'PQreset');
    pointer(PQrequestCancel) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQrequestCancel');
    pointer(PQdb) := GetProcedureAddress(Postgres3LibraryHandle,'PQdb');
    pointer(PQuser) := GetProcedureAddress(Postgres3LibraryHandle,'PQuser');
    pointer(PQpass) := GetProcedureAddress(Postgres3LibraryHandle,'PQpass');
    pointer(PQhost) := GetProcedureAddress(Postgres3LibraryHandle,'PQhost');
    pointer(PQport) := GetProcedureAddress(Postgres3LibraryHandle,'PQport');
    pointer(PQtty) := GetProcedureAddress(Postgres3LibraryHandle,'PQtty');
    pointer(PQoptions) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQoptions');
    pointer(PQstatus) := GetProcedureAddress(Postgres3LibraryHandle,'PQstatus');
    pointer(PQtransactionStatus) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQtransactionStatus');
    pointer(PQparameterStatus) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQparameterStatus');
    pointer(PQprotocolVersion) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQprotocolVersion');
    pointer(PQerrorMessage) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQerrorMessage');
    pointer(PQsocket) := GetProcedureAddress(Postgres3LibraryHandle,'PQsocket');
    pointer(PQbackendPID) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQbackendPID');
    pointer(PQclientEncoding) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQclientEncoding');
    pointer(PQsetClientEncoding) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQsetClientEncoding');
{$ifdef USE_SSL}
    pointer(PQgetssl) := GetProcedureAddress(Postgres3LibraryHandle,'PQgetssl');
{$endif}
    pointer(PQsetErrorVerbosity) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQsetErrorVerbosity');
    pointer(PQtrace) := GetProcedureAddress(Postgres3LibraryHandle,'PQtrace');
    pointer(PQuntrace) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQuntrace');
    pointer(PQsetNoticeReceiver) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQsetNoticeReceiver');
    pointer(PQsetNoticeProcessor) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQsetNoticeProcessor');
    pointer(PQexec) := GetProcedureAddress(Postgres3LibraryHandle,'PQexec');
    pointer(PQexecParams) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQexecParams');
    pointer(PQexecPrepared) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQexecPrepared');
    pointer(PQPrepare) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQprepare');
    pointer(PQsendQuery) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQsendQuery');
    pointer(PQsendQueryParams) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQsendQueryParams');
    pointer(PQsendQueryPrepared) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQsendQueryPrepared');
    pointer(PQgetResult) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQgetResult');
    pointer(PQisBusy) := GetProcedureAddress(Postgres3LibraryHandle,'PQisBusy');
    pointer(PQconsumeInput) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQconsumeInput');
    pointer(PQnotifies) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQnotifies');
    pointer(PQputCopyData) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQputCopyData');
    pointer(PQputCopyEnd) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQputCopyEnd');
    pointer(PQgetCopyData) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQgetCopyData');
    pointer(PQgetline) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQgetline');
    pointer(PQputline) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQputline');
    pointer(PQgetlineAsync) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQgetlineAsync');
    pointer(PQputnbytes) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQputnbytes');
    pointer(PQendcopy) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQendcopy');
    pointer(PQsetnonblocking) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQsetnonblocking');
    pointer(PQisnonblocking) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQisnonblocking');
    pointer(PQflush) := GetProcedureAddress(Postgres3LibraryHandle,'PQflush');
    pointer(PQfn) := GetProcedureAddress(Postgres3LibraryHandle,'PQfn');
    pointer(PQresultStatus) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQresultStatus');
    pointer(PQresStatus) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQresStatus');
    pointer(PQresultErrorMessage) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQresultErrorMessage');
    pointer(PQresultErrorField) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQresultErrorField');
    pointer(PQntuples) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQntuples');
    pointer(PQnfields) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQnfields');
    pointer(PQbinaryTuples) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQbinaryTuples');
    pointer(PQfname) := GetProcedureAddress(Postgres3LibraryHandle,'PQfname');
    pointer(PQfnumber) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQfnumber');
    pointer(PQftable) := GetProcedureAddress(Postgres3LibraryHandle,'PQftable');
    pointer(PQftablecol) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQftablecol');
    pointer(PQfformat) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQfformat');
    pointer(PQftype) := GetProcedureAddress(Postgres3LibraryHandle,'PQftype');
    pointer(PQfsize) := GetProcedureAddress(Postgres3LibraryHandle,'PQfsize');
    pointer(PQfmod) := GetProcedureAddress(Postgres3LibraryHandle,'PQfmod');
    pointer(PQcmdStatus) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQcmdStatus');
    pointer(PQoidStatus) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQoidStatus');
    pointer(PQoidValue) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQoidValue');
    pointer(PQcmdTuples) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQcmdTuples');
    pointer(PQgetvalue) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQgetvalue');
    pointer(PQgetlength) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQgetlength');
    pointer(PQgetisnull) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQgetisnull');
    pointer(PQclear) := GetProcedureAddress(Postgres3LibraryHandle,'PQclear');
    pointer(PQfreemem) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQfreemem');
    pointer(PQmakeEmptyPGresult) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQmakeEmptyPGresult');
    pointer(PQescapeString) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQescapeString');
    pointer(PQescapeBytea) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQescapeBytea');
    pointer(PQunescapeBytea) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQunescapeBytea');
    pointer(PQprint) := GetProcedureAddress(Postgres3LibraryHandle,'PQprint');
    pointer(PQdisplayTuples) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQdisplayTuples');
    pointer(PQprintTuples) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQprintTuples');
    pointer(lo_open) := GetProcedureAddress(Postgres3LibraryHandle,'lo_open');
    pointer(lo_close) := GetProcedureAddress(Postgres3LibraryHandle,'lo_close');
    pointer(lo_read) := GetProcedureAddress(Postgres3LibraryHandle,'lo_read');
    pointer(lo_write) := GetProcedureAddress(Postgres3LibraryHandle,'lo_write');
    pointer(lo_lseek) := GetProcedureAddress(Postgres3LibraryHandle,'lo_lseek');
    pointer(lo_creat) := GetProcedureAddress(Postgres3LibraryHandle,'lo_creat');
    pointer(lo_tell) := GetProcedureAddress(Postgres3LibraryHandle,'lo_tell');
    pointer(lo_unlink) :=
GetProcedureAddress(Postgres3LibraryHandle,'lo_unlink');
    pointer(lo_import) :=
GetProcedureAddress(Postgres3LibraryHandle,'lo_import');
    pointer(lo_export) :=
GetProcedureAddress(Postgres3LibraryHandle,'lo_export');
    pointer(PQmblen) := GetProcedureAddress(Postgres3LibraryHandle,'PQmblen');
    pointer(PQenv2encoding) :=
GetProcedureAddress(Postgres3LibraryHandle,'PQenv2encoding');

    InitialiseDllist;
    end;
end;

On Mon, Nov 21, 2011 at 12:28 PM, Joost van der Sluis <joost at cnoc.nl> wrote:
> On Mon, 2011-11-21 at 12:13 -0500, Tom Russell wrote:
>> I tried adding the unti to my uses as well as the snippet you gave but
>> it says its the wrong number of parameters? I dont see where that even
>> accepts any really.
>>
>> Or Im confused?
>
> Could be due to the different fpc-version. Ctrl-click on it to find out
> how it is defined.
>
> Joost.
> --
> My Lazarus blog: http://www.lazarussupport.com/lazarus/weblog
>
>
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