deleting all files from a folder

[normanS]

Because you do findfirst() and findnext() before you do DeleteFile(), I think this will leave one mdb file behind.

[Michael Dunn]

You can use SHFileOperation() which takes wildcards.

--Mike-- Visual C++ MVP :cool: LINKS~! Ericahist | PimpFish | CP SearchBar v3.0 | C++ Forum FAQ

[Hamid Taebi]

No problem we can use from a Do while and yes its right. WIN32_FIND_DATA find; SetCurrentDirectory("c:\\temp"); HANDLE handle=FindFirstFile("*.mdb",&find); do DeleteFile(find.cFileName);//or you can use from //SHFileOperation(...); while(FindNextFile(handle,&find)!=0); FindClose(handle);

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WhiteSky

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[Sarath C]

is it safe(shell API have some dependency on the version?) to use shell API, if we there are some other win32 APi to do the same task? is it faster than Win32 APIs?

SaRath.
_"Before you can learn to recognize what's wrong, you must learn to recognize what's right" - Raymond Chen."

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My Blog | Understanding State Pattern_

[kakan]

According to my experience, it's risky to do changes in a directory structure while doing a FindFirst/Findnext loop. I have had problems doing that (such as deleting the found files) in the past. IMO, ShFileOperation is safer, and I would use it.

Alcohol. The cause of, and the solution to, all of life's problems - Homer Simpson

[Tara14]

This is the program that I tried.

#include "afxdisp.h"

void main()
{

WIN32\_FIND\_DATA find;
char	aExePath\[\_MAX\_PATH\];
char	aDrive\[\_MAX\_DRIVE\];
char	aDir\[\_MAX\_DIR\];
CString	aPath;

::GetModuleFileName( AfxGetInstanceHandle(),aExePath,sizeof(aExePath));

\_splitpath(aExePath,aDrive,aDir,NULL,NULL);

aPath.Format("%s%s",aDrive,aDir);
aPath =  aPath + "sbh\_store";

SetCurrentDirectory(aPath); 
HANDLE handle=FindFirstFile("\*.mdb",&find);
do
DeleteFile(find.cFileName);
while(FindNextFile(handle,&find)!=0);
FindClose(handle);

}

Here I get the error

nafxcwd.lib(thrdcore.obj) : error LNK2001: unresolved external symbol __endthreadex
nafxcwd.lib(thrdcore.obj) : error LNK2001: unresolved external symbol __beginthreadex

When I comment out CString aPath; ::GetModuleFileName( AfxGetInstanceHandle(),aExePath,sizeof(aExePath)); I do not get the unresolved external symbol error. I guess I am missing something. Please can you tell me what I am not doing right. Have I missed out a header? -- modified at 5:40 Friday 18th August, 2006

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Fortitudine Vincimus!_

[Tara14]

I tried using SHFileOperation. But the program is crashing. This is what I did:

SHFILEOPSTRUCT del;

del.hwnd = NULL;
del.wFunc = FO\_DELETE;
del.pFrom = "C:\\\\temp\\\\\*.mdb";
del.fFlags = FOF\_FILESONLY;

SHFileOperation(&del);

Something is wrong here. I tried searching the net, but I am not able to figure it out. Please can you help me. Thanks.

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Fortitudine Vincimus!_

[prasad_som]

see this solution

Prasad Notifier using ATL

[Tara14]

OH! I got it!! The pTo member of the SHFILEOPSTRUCT structure shoud be assigned NULL! Thanks.

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Fortitudine Vincimus!_

[prasad_som]

you need to set del.pTo ,too. i.e. set it to NULL if you are not using it. code will be,

SHFILEOPSTRUCT del;
del.hwnd = NULL;
del.wFunc = FO_DELETE;
del.pFrom = "C:\\temp\\*.mdb";
del.fFlags = FOF_FILESONLY;
del.pTo = NULL;
SHFileOperation(&del);

Oh ! you got it right already. :) -- modified at 5:59 Friday 18th August, 2006

Prasad Notifier using ATL

[Tara14]

Ah! How did I miss it. Thanks a billion!

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Fortitudine Vincimus!_

[Kleser]

hi, i don't want to give you an answer, instead i would like to ask about how you can make your app create an mdb file. because this is what i trying to do right now. if you don't mind, would you share me you little secret? thanks in advance. cheers -- modified at 10:25 Friday 18th August, 2006

[Hamid Taebi]

Is your problem solve

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WhiteSky

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[Tara14]

Hello, I use DAO to make the connection. There are some really nice samples that come in msdn. I wrote my own little class to do the stuff taking help from the samples. Here is the database creation part. My database needed to be locked with a password.

//////////////////////////////////////////////////////
/////////********* CREATE DATABASE ***********///////////////////////////

void CDBcreate::CreateDatabase(CString m_strDBName)
{

int dwOptions =0;
dwOptions |=dbVersion30;

//Release table if selected
if (m_pTableDef)
{
m_pTableDef->Close();
delete m_pTableDef;
m_pTableDef = NULL;
}

//close database if open
if (m_pDatabase)
{
m_pDatabase->Close();
delete m_pDatabase;
m_pDatabase=NULL;
}

//create new database
m_pDatabase = new CDaoDatabase;
m_pDatabase->Create(m_strDBName, dbLangGeneral,dwOptions);

CString strConnect( _T( ";pwd=" ) );
COleVariant NewPassword( "password", VT_BSTRT ),OldPassword( "", VT_BSTRT );
DAO_CHECK( m_pDatabase->m_pDAODatabase->NewPassword( V_BSTR( &OldPassword ),
V_BSTR( &NewPassword ) ) );
m_bOpen=TRUE; // flag of currently open table

}

/////////********* END CREATE DATABASE ***********///////////////////////////

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Fortitudine Vincimus!_

[Tara14]

Yes. Changing the settings helped. But there is something I do not understand. I used ::GetModuleFileName( AfxGetInstanceHandle(),aExePath,sizeof(aExePath)); in my application using mfc. There I had no problem. But in the C++ program that I wrote to delete files form a folder, AfxGetInstanceHandle() was causing assersion failure. I could'nt figure out why. When I changed it to NULL >::GetModuleFileName( NULL,aExePath,sizeof(aExePath)); it worked fine. Why?

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Fortitudine Vincimus!_