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Asked: 2026-05-11T02:02:00+00:00

On Delphi 2009, on a new VCL project: procedure TForm1.FormCreate(Sender: TObject); var Handle: THandle;

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On Delphi 2009, on a new VCL project: 

procedure TForm1.FormCreate(Sender: TObject); var     Handle: THandle; begin     Handle := loadlibrary('oci.dll');     if Handle <> 0 then     begin         try             ShowMessage('Success');         finally             FreeLibrary(Handle);         end;     end     else         ShowMessage('Fail'); end;

If i run the Exe from the IDE, it fails, if i run the EXE from the directory, just on double clicking on it it’s a success !!??

Please tell me what I’m missing.

Thanks, Fred

EDIT: Launching the EXE via the IDE works with Delphi 7 !! WTf is the problem with D2009 ??

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1 Answer

  1. The usual problem with LoadLibrary failing is that the required DLL is not in the DLL search path. It’s possible that D2009 is not searching the same folders for some reason.

    To make sure, you should get more details of the error, using something like…

    ShowMessage(SysErrorMessage(GetLastError));

    Try (even temporarily) placing ‘oci.dll’ in the same directory as you project’s .EXE, and try again.

    Here are some things to check:

    • Which directory is oci.dll located in?
    • Is that directory included in the ‘PATH’ environment variable? If not, try that.
    • Have you maybe set an OVERRIDE for PATH in Delphi Tools/Options/Env variables screen?
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