file i/o

[1976]

hello good people

can someone plz give an example (if poss wit a brief explanation)
on how to work with the funtions CreateFile, WriteFile, ReadFile.
i'm a bit mixed up with the arguments.
thanks in advance for your kind time

1976

"The truth is an amusing concept"

[HisWord]

Here's what I got for CreateFile and ReadFile

Unsigned Char Buffer[50]={0};
HANDLE hFile;
DWORD ReadBytes = 16;
DWORD dwRead;


hFile= CreateFile("C:\\Temp\\Temp.txt", GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, NULL, NULL);

ReadFile(hFile, &buffer,ReadBytes ,&dwRead ,NULL);

[novacain]

Use sizeof() for the readbytes and dwRead as a check that all the data was read.
Also catch the return of ReadFile(), has to be greater than 0 or error.