UTexture::UpdateResource() overwrote by winbase.h #define

anonymous_user_f9e5c401 · July 2, 2017, 9:48pm

I have a UTexture2D* variable called texture. UTexture2D has a function called UpdateResource(). WinBase.h has a macro called “UpdateResource” that calls “UpdateResourceW”. When I call “texture->UpdateResource();”, I get the error “class “UTexture2D” has no member “UpdateResourceW”” (despite not even including winbase.h). Going to the definition in VS takes me to that #define in WinBase.h. So that define in winbase is overwriting the function call, renaming it to UpdateResourceW somehow.

Zeblote · July 2, 2017, 11:16pm

Do you actually get an error when you try to compile it or is it just intellisense being stupid?

anonymous_user_f9e5c401 · July 3, 2017, 6:37am

It’s an actual error when I compile that makes the build fail, even when compiling from unreal engine.

anonymous_user_0896116a · February 25, 2022, 3:26am

fixed this by putting this at the top of the file where you are calling UpdateResource for the texture2d under the includes

#ifdef _WIN32
#undef UpdateResource
#endif

sorry for pinging the necro thread just hoping to help someone in the future from headaches

user_68ba8628fb94ac1a63a79132fabdd2bb5d1b070e529b1013db6d2f · October 27, 2023, 9:34am

YOU SAVED MY LIFE

Nonlin · October 3, 2024, 1:55pm

I think epic wants you to use this header instead.
include “Windows/WindowsHWrapper.h”

Using that there shouldn’t be any conflicts.