Extracting folder Information

[muthuivs]

Ladies and Gents,

I am trying to write a function in my ever growing program to give me information on a selected folder. I actually only need the number of files in the folder so I can use that number in a loop. Is there a way to get the number of files in INT form for this purpose ? Thanks in advance!!


Muthu

 

[cpjust]

Not that I know of.
Use FindFirstFile() and FindNextFile() until you get all the files in the directory and count each one.

 

[muthuivs]

can you give me an example of the FindFirstFile() and FindNextFile() function? I am trying the MSDN example and I am getting errors left, right and centre!! here is what I typed, I am not sure where to enter the path to my folder in this code:


int main(int argc, char *argv[])
{
WIN32_FIND_DATA FindFileData;
HANDLE hFind = INVALID_HANDLE_VALUE;
char DirSpec[MAX_PATH + 1]; // directory specification
DWORD dwError;

printf ("Target directory is %s.\n", argv[1]);
strncpy (DirSpec, argv[1], strlen(argv[1])+1);
strncat (DirSpec, "\\*", 3);

hFind = FindFirstFile(DirSpec, &FindFileData);

if (hFind == INVALID_HANDLE_VALUE)
{
printf ("Invalid file handle. Error is %u\n", GetLastError());
return (-1);
}
else
{
printf ("First file name is %s\n", FindFileData.cFileName);
while (FindNextFile(hFind, &FindFileData) != 0)
{
printf ("Next file name is %s\n", FindFileData.cFileName);
}

dwError = GetLastError();
FindClose(hFind);
if (dwError != ERROR_NO_MORE_FILES)
{
printf ("FindNextFile error. Error is %u\n", dwError);
return (-1);
}
}
return (0);
}

 

[cpjust]

What errors are you getting? Compile-time or run-time?

 

[muthuivs]

It is a runtime error but I think it is because I dont know where to specify my path in the code. I tried forcing it into char *argv[] but I get a conversion error, so i leave it and it it goes into cmd line but terminated with a fatal error. Any Idea?

 

[cpjust]

Does this line print the path properly?

printf ("Target directory is %s.\n", argv[1]);

What if you try hard-coding the path into a const char array? Does that still give you an error?

 

[muthuivs]

The program also terminates before anything shows up on the Cmd line, it is a windows invoked error. I gave up on that example and decided to go a different route, I am not reading the file any more, instead I am running the loop to the max possible scenario about 99 times so it still runs within 6 seconds.

 

[Bioke]

your code seems right... look like microsoft code...

I guest you don't pass parameters to your .exe
like :
MyApp.exe c:\
or
MyApp.exe "c:\program files