Q: CFile::GetStatus returns incorrect value ?

Shiva Shenoy -- shiva@wallop.com
Monday, September 30, 1996

Environment: Win95 VC++ 4.1

static version of CFile::GetStatus on "C:\Temp\12345678.htm" returns 
non-zero even when the file does not exist on the disk but another file
C:\Temp\12345678.html" exists.

The Documentation says about the return value - "A value of 0 indicates
that the file does not exist."

On tracing the MFC source, GetStatus calls FindFirstFile which returns
a
valid handle and WIN32_FIND_DATA.cFileName has C:\Temp\12345678.html
in it !! MFC doesnot check the file name.

I do call EnableShellOpen and RegisterShellFileTypes
in my InitInstance.
Could somebody please explain what should be done to check if a file
exists or not ?

Shiva Shenoy	

---

Isaac Katzenelson -- isaac_k@goldnet.net.il
Wednesday, October 02, 1996

[Mini-digest: 2 responses]

Shiva Shenoy wrote:
> 
> Environment: Win95 VC++ 4.1
> 
> static version of CFile::GetStatus on "C:\Temp\12345678.htm" returns
> non-zero even when the file does not exist on the disk but another file
> C:\Temp\12345678.html" exists.
> 
> The Documentation says about the return value - "A value of 0 indicates
> that the file does not exist."
> 
> On tracing the MFC source, GetStatus calls FindFirstFile which returns
> a
> valid handle and WIN32_FIND_DATA.cFileName has C:\Temp\12345678.html
> in it !! MFC doesnot check the file name.
> 
> I do call EnableShellOpen and RegisterShellFileTypes
> in my InitInstance.
> Could somebody please explain what should be done to check if a file
> exists or not ?
> 
> Shiva Shenoy


Hi Shiva

I have VC4.2 and it's help says:

BOOL GetStatus( CFileStatus& rStatus ) const;
static BOOL PASCAL GetStatus( LPCTSTR lpszFileName, CFileStatus&
rStatus);
Return Value
This function always returns TRUE.

This is pretty wierd isn't it ?

To check for file existance you may open it with CFile::Open and check
the return value of this operation.

Hope this helps
Isaac.

______________________________________________________________________________________
LOOSE WEIGHT NOW, ASK ME HOW !
mailto:isaac_k@goldnet.net.il
______________________________________________________________________________________
-----From: "Erik Funkenbusch" 

This seems to be a minor problem in the Win95 long file name mechanism. 
I'm not sure if it's cache related or what, but i've noticed that if you
have a file that's 8.3 and rename it so it's 9.3 or 9.4 it will often
confuse the two files for the same file name.  I think this is a Win95
problem and not an MFC one.

---

Ash Williams -- ash@digitalworkshop.co.uk
Monday, October 07, 1996

I've had similar problems and until I resolve them, I use the _stat 
struct like so:

#include 
#include 


BOOL ExistStatus( const CString& rPath )
{
	BOOL existStatus;

	struct _stat buffer;
	existStatus = _stat( rPath, &buffer ) != 0 ? FALSE : TRUE;

	return existStatus;
}

Ash

---

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