Equivalent to pread/pwrite in MSVC?

Question

What calls best emulate pread/pwrite in MSVC 10?

Answer 1

At the C runtime library level, look at fread, fwrite and fseek.

At the Win32 API level, have a look at ReadFile, WriteFile, and SetFilePointer. MSDN has extensive coverage of file I/O API's.

Note that both ReadFile and WriteFile take an OVERLAPPED struct argument, which lets you specify a file offset. The offset is respected for all files that support byte offsets, even when opened for synchronous (i.e. non 'overlapped') I/O.

Depending on the problem you are trying to solve, file mapping may be a better design choice.