WinCrypt sample decrypting file to 1kb?

I am following this sample, compiles fine and runs fine, i have encrypted a file with a password, upon using decrypt testEnc.exe testDec.exe , the encrypted file is 1kb, i have a cmd prompt elivated with admin rights so there is no issue with file operation apis, does anyone know what the problem is?

the site is

Example C Program: Decrypting a File (Windows)

I would guess user error; but, that is just a guess.
Edit: By that I think it is working correctly till you post info that means it is not.

Why do you think the output is wrong?

Tim S.

Because the decrypted file should be the same as the file that was crypted, etc back to its original, and i should be able to run the program again...