Error using CreateFileMapping - C

Question

I am using the tutorial on this MSDN link to implement a way of transferring data from one process to another. Although I was advised in an earlier question to use the Pipe meth

Answer 1

Ensure the Global name is unique; this can be done with a tool named Process Explorer.

If not unique, this would typically fail with Error code 6 (The handle is invalid) upon calling CreateFileMappinng

1. Download Process Explorer from SysInternals
2. Run Process Explorer
3. Run your application up to a break point just prior to the CreateFileMapping() failure
4. Search for MyFileMappingObject using Find (Ctrl-F)
5. If anything comes up such as another FileMap, Mutex, etc.. consider a more unique name, and ensure your application is not the one creating it.

Note: Consider naming your FileMapping using a GUID (File -> Tools > Create GUID) within Visual Studio