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Asked: 2026-05-18T12:33:33+00:00

I have a DLL that gets loaded in my application, like so: procedure LoadTessDLL;

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I have a DLL that gets loaded in my application, like so:

procedure LoadTessDLL;
var
  DLLHandle: THandle;
begin
  DLLHandle := LoadLibrary(PChar(ExtractFilePath(application.exename) + 'tessdll.dll'));
  if DLLHandle >= 32 then
  begin
    TessDLLLoaded := True;

We discovered that on an XP PC with Service Pack 2, the DLL fails to get loaded (the DLLHAndle = 0 etc), UNLESS we install Microsoft Visual C++ 2008 Redistributable. Then it gets loaded and works just fine.

Please can you help me get this working without it?

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1 Answer

  1. Editorial Team

    Do you control the source DLL? If not then no, the DLL relies on the C++ 2008 Runtime and it must be installed for the DLL to run and you need to add that as part of your install.

    If you you do control the source for the DLL then statically link it to the C++ runtime, which will build the runtime into the DLL.

    This issue has nothing to do with Windows XP. The DLL requires the C++ 2008 runtime on Vista and 7 as well, it just so happens that the machines you tested with already had it installed. The C++ runtime is not guaranteed to be installed on an any version of Windows.

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