name 'FILE_SHARE_READ' is not defined

The error message "name 'FILE_SHARE_READ' is not defined" indicates that a variable or constant named FILE_SHARE_READ has not been defined in the current scope.

FILE_SHARE_READ is a constant value that is often used in file I/O operations in Windows operating systems. It specifies that a file can be opened for reading, and allows other processes to access the same file for reading at the same time.

To resolve this error, you need to ensure that the correct module or library is imported or included in your code, and that the necessary constants or variables are defined within the scope of your program.