Want to win a PS4? Go Premium and enter to win our High-Tech Treats giveaway. Enter to Win

x
?
Solved

Borland Database Engine using SetConfigParameter to set NET DIR - Object not found Error

Posted on 2007-12-04
3
Medium Priority
?
1,523 Views
Last Modified: 2010-07-27
I'm using SetConfigParameter in Delphi 5 to set the NET DIR but get Object not found error. Here's my code:

SetConfigParameter('\program files\common files\borland shared\bde\;NET DIR','\program files\common files\borland shared\bde\');

I'm using the code for the SetConfigParameter routine from the Borland website

Thanks
0
Comment
Question by:pauljackson5750
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
3 Comments
 
LVL 13

Expert Comment

by:rfwoolf
ID: 20404217
I think the first parameter you're supplying is no good, try adding the drive letter, i.e.
SetConfigParameter('C:\program files\common files\borland shared\bde\;NET DIR','\program files\common files\borland shared\bde\');

personally I add DBTables to my uses clause of the form, then I say

session.netfiledir := 'c:\whatever';
0
 
LVL 13

Accepted Solution

by:
rfwoolf earned 500 total points
ID: 20404255
Okay here's what I found on the borland website and implemented to change the LOCAL SHARE to true.

The first is a general procedure to make changes to the BDE:

The second calls the procedure with the parameter to be set in the BDE config file...
procedure SetConfigParameter2(Param: string; Value: string);
var
  hCfg: hDBICfg;
  Config: SYSConfig;
  Path, Option: string;
  ParamCount, I: word;
  pFields, pFld: pFLDDesc;
  pRecBuf, pRec: pBYTE;
  Found, SelfInitialized: boolean;
  rslt: DBIResult;
 
begin
  {$Ifdef WIN32}
  hCfg := nil;
  pFld := nil;
  pRec := nil;
  Found := False;
  SelfInitialized := False;
  try
    if Pos(';', Param) = 0 then
      raise EDatabaseError.Create('Invalid parameter passed to function.  There must ' +
         'be a semi-colon delimited sting passed');
    Path := Copy(Param, 0, Pos(';', Param) - 1);
    Option := Copy(Param, Pos(';', Param) + 1, Length(Param) - Pos(';', Param));
 
    rslt := DbiGetSysConfig(Config);
    if rslt <> DBIERR_NONE then
    begin
      if rslt = DBIERR_NOTINITIALIZED  then // Engine not initialized error...
      begin
        SelfInitialized := True;
        DbiInit(nil);
        Check(DbiGetSysConfig(Config));
      end
      else
        Check(rslt);
    end;
    (* DbiOpenConfigFile is defined as such:
        function DbiOpenConfigFile (            { Open/Create configuration }
              pszDirPath    : PChar;            { Directory }
              bCreate       : Bool;             { TRUE to create/overwrite }
        var   hCfg          : hDBICfg           { Handle to config }
                           ): DBIResult stdcall; *)
    Check(DbiOpenConfigFile(Config.szIniFile, FALSE, hCfg));
 
    (* DbiCfgGetRecord is defined as such:
        function DbiCfgGetRecord (              { Get a record }
              hCfg          : hDBICfg;          { Config Handle/NULL }
              pszCfgPath    : PChar;            { Path }
        var   iFields       : Word;             { Returned nbr of fields }
              pfldDesc      : pFLDDesc;         { Field descriptors }
              pRec          : Pointer           { Field values }
                           ): DBIResult stdcall; *)
    { Call it without the field and record buffer to get the count... }
    Check(DbiCfgGetRecord(hCfg, PChar(Path), ParamCount, nil, nil));
 
    pFields := AllocMem(ParamCount * sizeof(FLDDesc));
    pFld := pFields;
    pRecBuf := AllocMem(10000);
    pRec := pRecBuf;
 
    { Get the node values... }
    Check(DbiCfgGetRecord(hCfg, PChar(Path), ParamCount, pFields, pRecBuf));
 
    for I := 0 to ParamCount - 1 do
    begin
      if pFields^.szName = Option then
      begin
        StrPCopy(PChar(pRecBuf), Value);
 
        (* DbiCfgModifyRecord is defines as such:
             function DbiCfgModifyRecord (           { Modify a record }
                   hCfg          : hDBICfg;          { Config Handle/NULL }
                   pszCfgPath    : PChar;            { Path }
                   iFields       : Word;             { Nbr of fields }
                   pfldDesc      : pFLDDesc;         { Field descriptors }
                   pRec          : Pointer           { Data values }
                ): DBIResult stdcall; *)
        Check(DbiCfgModifyRecord(hCfg,  PChar(Path), ParamCount, pFld, pRec));
 
        Found := True;
     end;
      Inc(pFields);
      Inc(pRecBuf, 128);
    end;
    if Found = False then
      raise EDatabaseError.Create(Param + ' entry was not found in configuration file');
 
  finally
    if pFld <> nil then
      FreeMem(pFld);
    if pRec <> nil then
      FreeMem(pRec);
    if hCfg <> nil then
 
    (* DbiCloseConfigFile is defined as such:
           function DbiCloseConfigFile (           { Close the config file }
           var   hCfg          : hDBICfg;          { Handle }
                 bSave         : Bool;             { To save the changes }
                 bDefault      : Bool;             { To make this file the default }
                 bSaveAs16     : Bool              { To save as a 16-bit config file }
              ): DBIResult stdcall; *)
      { Close and save the config file... }
    Check(DbiCloseConfigFile(hCfg, TRUE, TRUE, FALSE));
    if SelfInitialized = True then
      DbiExit;
  end;
  {$Else}
     raise EDatabaseError.Create('Non supported function in 16 bit');
  {$EndIf}
end;
 
 
 
 
 
 
 
===============================================================
 
 
 
 
 
  //Set LOCAL SHARE TO TRUE
SetConfigParameter2('\SYSTEM\INIT\;LOCAL SHARE', 'TRUE');

Open in new window

0
 

Author Closing Comment

by:pauljackson5750
ID: 31412922
Used the session.netfiledir := getcurrentdir and it seems to work.

Many thanks
0

Featured Post

Important Lessons on Recovering from Petya

In their most recent webinar, Skyport Systems explores ways to isolate and protect critical databases to keep the core of your company safe from harm.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

The uses clause is one of those things that just tends to grow and grow. Most of the time this is in the main form, as it's from this form that all others are called. If you have a big application (including many forms), the uses clause in the in…
Have you ever had your Delphi form/application just hanging while waiting for data to load? This is the article to read if you want to learn some things about adding threads for data loading in the background. First, I'll setup a general applica…
Have you created a query with information for a calendar? ... and then, abra-cadabra, the calendar is done?! I am going to show you how to make that happen. Visualize your data!  ... really see it To use the code to create a calendar from a q…
Want to learn how to record your desktop screen without having to use an outside camera. Click on this video and learn how to use the cool google extension called "Screencastify"! Step 1: Open a new google tab Step 2: Go to the left hand upper corn…
Suggested Courses

609 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question