Author: Jonas Bilinkevicius

I want to run the BDE install from my own setup application. Before I run the BDE 
installation, I would like to check that BDE is installed.

Answer:

Solve 1:

1   function isbdepresent: boolean;
2   var
3     IdapiPath: array[0..255] of Char;
4     IdapiHandle: THandle;
5   begin
6     result := false;
7     GetProfileString('IDAPI', 'DLLPath', 'C:\', IdapiPath, 255);
8     {next lines isolates the first directory path from the IdapiPath in case 
9   	there are more}
10    if Pos(';', StrPas(IdapiPath)) <> 0 then
11    begin
12      StrPCopy(IdapiPath, Copy(StrPas(IdapiPath), 1, Pred(Pos(';',
13        StrPas(IdapiPath)))));
14    end;
15    IdapiHandle := LoadLibrary(StrCat(IdapiPath, '\IDAPI01.DLL'));
16    if IdapiHandle < HINSTANCE_ERROR then
17      result := false
18        {IDAPI is not present on this system}
19    else
20    begin
21      FreeLibrary(IdapiHandle);
22      result := true;
23      {IDAPI is present on this system}
24    end;
25  end;



Solve 2:

Try to check the registry for the presence of the BDE:

26  with TRegistry.create do
27  begin
28    Rootkey := HKEY_LOCAL_MACHINE;
29    OpenKey('SOFTWARE\BORLAND\DATABASE ENGINE', false);
30    CFGFile := ReadString('CONFIGFILE01');
31    Free;
32  end;



Solve 3:

you can try to initialize the BDE 
33  
34  IsBDEExist := (dbiInit(nil) = 0)