[Dev-C++] Error compiling "file_one" from tutorials.

[Richard P. E. <ev...@ma...>]

This is from the Forger's Win32 API tutorials.  I tried to compile the example
"file_one" but in File_one.c I got the following error messages:

17 file_one.c
  warning: converting NULL to non-pointer type

25 file_one.c
  ANSI C++ forbids implicit conversion from `void *' in assignment

49 file_one.c
  warning: converting NULL to non-pointer type

57 file_one.c
  ANSI C++ forbids implicit conversion from `void *' in assignment

179 file_one.c
  warning: converting NULL to non-pointer type

0

Both have the following same line of code:

   pszText = GlobalAlloc(GPTR, dwTextLength + 1);

Can anyone tell me what went wrong?  Thank in advance.