IntelliSense: cannot open source file "curl.h" in C++

Question

I am unable to compile my C++ project.

IntelliSense: cannot open source file "curl.h" in C++

I tried adding that file to the "Header Files" folder in Solution Explorer: no change. I was unable to add it to the "Source Files" folder.

How can I fix this?

Answer 1

• Right click on your project
• select Properties
• Expand Configuration Properties
• Click on the VC++ Directories
• Add $(ProjectDir) into the "Reference Directories" item

Answer 2

Under Visual Studio 2010/2012/2013

• Right click on your project
• select Properties
• Expand Configuration Properties
• Click on the VC++ Directories
• Add the path to your file, as well as $(ProjectDir), into the "Reference Directories" item