Error loading DLL (GetLastError=193)

Community Community & Industry Discussion
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1

I am following [DLL linking tutorial][1]. As of VS 2017, i can’t get my DLL to work with unreal. I get the following error.

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I have debugged the UE4 part of code and there is no chance of any mistakes there. As you can see any other DLL picked from any other application runs fine.

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I have tried :

  • Setting VS2017 in release + x64
  • I have built dll with and without stdafx.h included
  • I have built DLL removing every include from everywhere

Would you kindly let me know what settings would one use to make compatible UE4 DLLs.
I do understand that packing proprietary DLLs into shipped project is a bad practice. But i would like to have the knowledge handy for Educational purposes.

Thank you for your help in advance.

2

Okay, so i found out that every DLL has to have a basic entry point which looks like the following.

274350-screenshot-125.png

Same is true for .exe files and any other windows files. The code part gets this exact pointer.

FPlatformProcess::FreeDllHandle(v_dllHandle);

It just needed to be there. I created another templated base DLL and this time it works.
No need to hate stdafx.

3

Seems like I’m having the same issue as you or at least similar but I’m having a little trouble understanding your solution to the problem. Where does the FPlatformProcess go and what goes in the parameter field