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Editorial Team
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Asked: 2026-06-11T16:06:18+00:00

I am creating a C++ MFC DLL based on a third party SDK in

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I am creating a C++ MFC DLL based on a third party SDK in Visual Studio 2008. The SDK provides a TLB folder, a Lib folder (.lib only), an Include folder (.h and .hpp only) and a Bin folder (some exes, DLL and .ax files). I tried to link the SDK library to my DLL in the following way:

  • C/C++ -> General -> Additional Include Directories – Bin, Include and TLB folder (just in case);
  • Linker -> General -> Additional Library Directories – Lib and Bin;
  • Linker -> Input -> Additional Dependencies – the .lib’s in the Lib folder

Doing things this way I get compiling errors due to linking problems (undeclared indentifiers and such), so I added an import line for the TLB’s:

#import "C:\Path\To\Tlb.tlb" raw_interfaces_only, raw_native_types, no_namespace, named_guids

This pops another compiling errors about type redefinitions:

error C2011: '_SYSTEMTIME' : 'struct' type redefinition

What am I missing? I am quite new to Windows programming.
Thanks in advance.

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1 Answer

  1. Editorial Team

    I don’t know why _SYSTEMTIME is redefined when it is defined in <Windows.h> or something brought in by it.

    Anyway, try removing no_namespaces from the #import directive. Namespaces are there to avoid name clashes like these.

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