ERROR Cannot open source file

Question

I am running visual studio C    and I have a header file  GameEngine h  that I am trying to have another file see     When I  include  GameEngine h   it gives me the error that it cannot open the source file   I have no idea what to do   I have done this literally a thousand times but for some reason this is now not working

User · Answer

Copy the contents of the file  Create an  h file  give it the name of the original  h file  Copy the contents of the original file to the newly created one Build it VOILA

User · Answer

Let Unreal do the job  Close all  Right click your Project File   uproject     Generate VisualStudio Project Files

User · Answer

This was the top result when googling  quot cannot open source file quot  so I figured I would share what my issue was since I had already included the correct path  I m not sure about other IDEs or compilers  but least for Visual Studio  make sure there isn t a space in your list of include directories  I had put a space between the   of the last entry and the beginning of my new entry which then caused Visual Studio to disregard my inclusion

User · Answer

Just in case there is someone out there who s a bit new like me  double check that you are spelling your header folders correctly   For example    lt  include  Component BoxComponent h    This will result in the error  Instead  it needs to be     lt  include  Components BoxComponent h

User · Answer

You need to check your project settings  under C    check include directories and make sure it points to where GameEngine h resides  the other issue could be that GameEngine h is not in your source file folder or in any include directory and resides in a different folder relative to your project folder  For instance you have 2 projects ProjectA and ProjectB  if you are including GameEngine h in some source header file in ProjectA then to include it properly  assuming that ProjectB is in the same parent folder do this   include     ProjectB GameEngine h    This is if you have a structure like this      Root ProjectA      Root ProjectB  lt - GameEngine h actually lives here

User · Answer

One thing that caught me out and surprised me was  in an inherited project  the files it was referring to were referred to on a relative path outside of the project folder but yet existed in the project folder  In solution explorer  single click each file with the error  bring up the Properties window  right-click  Properties   and ensure the  quot Relative Path quot  is just the file name  e g  MyMissingFile cpp  if it is in the project folder   In my case it was set to        Some Other Folder MyMissingFile cpp

[visual-studio] ERROR: Cannot open source file " "

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