Re: FileExists() is using wildcards

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#10389

From: Hans Galema
Date: Tue, 27 Apr 2004 07:42

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Ed Mulroy [TeamB] wrote:
> You might use one of these.

>     return !access(name, 0);

Interesting function. So DOS had it all already!

>   bool MyFileExists(const char *fname)
>     {
>     DWORD a = GetFileAttributes(name);
> 
>     return (a != INVALID_FILE_ATTRIBUTES) &&
>              !(a & FILE_ATTRIBUTE_DIRECTORY);
>     }

That did not compile for several reasons. The worst was that the
compiler (bcb3) could not know about INVALID_FILE_ATTRIBUTES.

I changed the code to:

   bool MyFileExists2(const char *fname)
     {
     DWORD a = GetFileAttributes(fname);  // winbase.h

     //return (a != INVALID_FILE_ATTRIBUTES) &&
       //       !(a & FILE_ATTRIBUTE_DIRECTORY);

      return (a != FILE_ATTRIBUTE_NORMAL) // 0x00000080 mapiwin.h winnt.h
              &&
            !(a & FILE_ATTRIBUTE_DIRECTORY);// 0x00000010 mapiwin.h winnt.h
     }

Now it does compile. And it works.

You just typed that I suppose. What would be the right value
for INVALID_FILE_ATTRIBUTES ?

Thanks for the reply.

Hans.

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