Don’t forget, the fourth parameter to ReadFile and WriteFile is sometimes mandatory

Raymond Chen April 4, 2013 Apr 4, 2013 04/4/13

The Read­File and Write­File functions have a parameter called lp­Number­Of­Byte­Read, which is documented as __out_opt LPDWORD lpNumberOfBytesRead, // or __out_opt LPDWORD lpNumberOfBytesWritten, "Cool," you think. "That parameter is optional, and I can safely pass NULL." My program runs fine if standard ...