Problem with CFindFile

[Kläser Andreas]

How do I get all Files (*.mp3) in this Code:

BROWSEINFO bi = { 0 };
TCHAR path[MAX_PATH];
char mydir[MAX_PATH];

bi.lpszTitle = _T("Wähle ein Verzeichnis das ausgelesen werden soll!");
bi.pszDisplayName = path;
LPITEMIDLIST pidl = SHBrowseForFolder ( &bi );

if ( pidl != 0 )
{
SHGetPathFromIDList(pidl, mydir); // besorgt den Namen des Ordners
if (CString(mydir).IsEmpty())
{
AfxMessageBox("Wähle ein gültiges Verzeichnis !!!");
OnOpenDirectory(); //Siehe hierzu Zeile 6 dieses Postings ;-)
}
}




I will open a directory a will all MP3 Files get to a function like TagReadingForFile!
How does this function work?? Can anybody watch my a code sample??

Sorry for my bad english, i am german!!

[Andreas Masur]

1. Using API functions

#include <string>
#include <vector>
#include <iostream>

#include <conio.h>

using std::cout;
using std::endl;
using std::string;
using std::vector;

int SearchDirectory(vector<string> &refvecFiles,
const string &refcstrRootDirectory,
const string &refcstrExtension)
{
string strFilePath; // Filepath
string strPattern; // Pattern
HANDLE hFile; // Handle to directory
WIN32_FIND_DATA FileInformation; // Directory information


strPattern = refcstrRootDirectory + "\\*." + refcstrExtension;
hFile = ::FindFirstFile(strPattern.c_str(), &FileInformation);
if(hFile != INVALID_HANDLE_VALUE)
{
do
{
if(FileInformation.cFileName[0] != '.')
{
strFilePath.erase();
strFilePath = refcstrRootDirectory + "\\" + FileInformation.cFileName;

// Save path
refvecFiles.push_back(strFilePath);
}
} while(::FindNextFile(hFile, &FileInformation) == TRUE);

// Close handle
::FindClose(hFile);

DWORD dwError = ::GetLastError();
if(dwError != ERROR_NO_MORE_FILES)
return dwError;
}

return 0;
}

int main()
{
vector<string> vecFiles;

// Search 'c:' for '.mp3' files
int iRC = SearchDirectory(vecFiles, "c:", "mp3");
if(iRC)
{
cout << "Error " << iRC << endl;
return -1;
}

// Print results
for(vector<string>::iterator iter = vecFiles.begin();
iter != vecFiles.end();
++iter)
cout << *iter << endl;

// Wait for keystroke
_getch();

return 0;
}



2. Using MFC 'CFileFind'

#include <string>
#include <vector>
#include <iostream>

#include <conio.h>

using std::cout;
using std::endl;
using std::string;
using std::vector;

int SearchDirectory(vector<string> &refvecFiles,
const string &refcstrRootDirectory,
const string &refcstrExtension)
{
string strFilePath; // Filepath
string strPattern; // Pattern
CFileFind FileFinder;
HANDLE hFile; // Handle to directory
WIN32_FIND_DATA FileInformation; // Directory information


strPattern = refcstrRootDirectory + "\\*." + refcstrExtension;

BOOL fWorking = FileFinder.FindFile(strPattern.c_str());

while(fWorking)
{
fWorking = FileFinder.FindNextFile();

if(FileFinder.IsDots() == FALSE)
{
strFilePath.erase();
strFilePath = (LPCTSTR) FileFinder.GetFilePath();

// Save path
refvecFiles.push_back(strFilePath);
}
}

FileFinder.Close();

return 0;
}



Since I just wrote down the code I didn't test it - it should work though...

Ciao, Andreas

"Software is like sex, it's better when it's free." - Linus Torvalds

[Kläser Andreas]

I use mFC and how must I enter the function, with "add member function" or any other way and how do I work with the function in this OnOpenFile - function?


void CMP3Locater2002ODBCView::OnOpenFile()
{
// TODO: Code für Befehlsbehandlungsroutine hier einfügen
OPENFILENAME ofn;
CHAR szFile[_MAX_PATH];

ZeroMemory(&ofn,sizeof(ofn));
ofn.lStructSize = sizeof(OPENFILENAME);
ofn.hwndOwner = m_hWnd;
ofn.Flags = OFN_EXPLORER | OFN_OVERWRITEPROMPT | OFN_HIDEREADONLY | OFN_EXTENSIONDIFFERENT;
ofn.nMaxFile = sizeof(szFile);
*szFile = '\0';
ofn.lpstrFile = szFile;
ofn.lpstrTitle = "MP3 Datei Öffnen";
ofn.lpstrDefExt = "mp3 ";
ofn.lpstrFilter = "MP3-Datei (*.mp3)\0*.mp3\0";
ofn.lpstrInitialDir="C:";
int iResult = GetOpenFileName(&ofn);
if(iResult)
{
MessageBox(ofn.lpstrFile);

}
}

[Andreas Masur]

// CMP3Locater2002ODBCView.h
// Add the necessary includes
#include <string>
#include <vector>

using std::string;
using std::vector;

// Add the function declaration in the private section
private:
int SearchDirectory(vector<string> &refvecFiles,
const string &refcstrRootDirectory,
const string &refcstrExtension);


// CMP3Locater2002ODBCView.cpp
// Add the function
int CMP3Locater2002ODBCView::SearchDirectory(vector<string> &refvecFiles,
const string &refcstrRootDirectory,
const string &refcstrExtension)
{
string strFilePath; // Filepath
string strPattern; // Pattern
CFileFind FileFinder;


strPattern = refcstrRootDirectory + "\\*." + refcstrExtension;

BOOL fWorking = FileFinder.FindFile(strPattern.c_str());

while(fWorking)
{
fWorking = FileFinder.FindNextFile();

if(FileFinder.IsDots() == FALSE)
{
strFilePath.erase();
strFilePath = (LPCTSTR) FileFinder.GetFilePath();

// Save path
refvecFiles.push_back(strFilePath);
}
}

FileFinder.Close();

return 0;
}

// Add the function within your 'OnOpenFile()'
void CMP3Locater2002ODBCView::OnOpenFile()
{
// TODO: Code für Befehlsbehandlungsroutine hier einfügen
OPENFILENAME ofn;
CHAR szFile[_MAX_PATH];

ZeroMemory(&ofn,sizeof(ofn));
ofn.lStructSize = sizeof(OPENFILENAME);
ofn.hwndOwner = m_hWnd;
ofn.Flags = OFN_EXPLORER | OFN_OVERWRITEPROMPT | OFN_HIDEREADONLY | OFN_EXTENSIONDIFFERENT;
ofn.nMaxFile = sizeof(szFile);
*szFile = '\0';
ofn.lpstrFile = szFile;
ofn.lpstrTitle = "MP3 Datei Öffnen";
ofn.lpstrDefExt = "mp3";
ofn.lpstrFilter = "MP3-Datei (*.mp3)\0*.mp3\0";
ofn.lpstrInitialDir="C:";

int iResult = GetOpenFileName(&ofn);
if(iResult)
{
MessageBox(ofn.lpstrFile);

vector<string> vecFiles;
char szDirectory[_MAX_PATH] = "";

memset(szDirectory, 0, sizeof(szDirectory));

// Extract directory
strncpy(szDirectory, szFile, strrchr(szFile, "\\") - szFile);

// Search directory
int iRC = SearchDirectory(vecFiles, szDirectory, "mp3");
if(iRC)
MessageBox("Error searching directory");
else
// Do something with all found .mp3-files
}
}



I didn't test it... ;-)

Ciao, Andreas

"Software is like sex, it's better when it's free." - Linus Torvalds

[Kläser Andreas]

There is only 1 problem with


strncpy(szDirectory, szFile, strchr(szFile, "\\") - szFile);




the Compiler error is:
C:\MP3Locater2002ODBC\MP3Locater2002ODBCView.cpp(295) : error C2664: 'strchr' : Konvertierung des Parameters 2 von 'char [2]' in 'int' nicht moeglich
Diese Konvertierung erfordert einen reinterpret_cast-Operator oder eine Typumwandlung im C- oder Funktionsformat

hope you can help me!!

Greats Andreas

[Andreas Masur]

Sorry my fault...

strncpy(szDirectory, szFile, strrchr(szFile, '\\') - szFile);




Ciao, Andreas

"Software is like sex, it's better when it's free." - Linus Torvalds

[Kläser Andreas]

Sorry I made a fault!! i will open with this code the directory but I can only read the first file! The second prob is that I can't open every file for reading the ID3 Tag! The function to read Tags is "TagReadingForFile" it will works when I open a file!! Hope you can help me again!!


void CMP3Locater2002ODBCView::OnOpenDirectory()
{
// TODO: Code für Befehlsbehandlungsroutine hier einfügen
BROWSEINFO bi = { 0 };
TCHAR path[MAX_PATH];
char mydir[MAX_PATH];

bi.lpszTitle = _T("Wähle ein Verzeichnis das ausgelesen werden soll!");
bi.pszDisplayName = path;
LPITEMIDLIST pidl = SHBrowseForFolder ( &bi );

if ( pidl != 0 )
{
SHGetPathFromIDList(pidl, mydir); // besorgt den Namen des Ordners
if (CString(mydir).IsEmpty())
{
AfxMessageBox("Wähle ein gültiges Verzeichnis !!!");
OnOpenDirectory(); //Siehe hierzu Zeile 6 dieses Postings ;-)
}
}
//Dateien öffnen nur MP3 bis jetzt möglich!!!!!

vector<string> vecFiles;
char szDirectory[_MAX_PATH] = "";
memset(szDirectory, 0,sizeof(szDirectory));
// Extract directory
strncpy(szDirectory, mydir, strrchr(mydir, '\\') - mydir);
// Search directory
int iRC = SearchDirectory(vecFiles, szDirectory, "mp3");
if(iRC)
MessageBox("Error searching directory");
else
TagReadingForFile(mydir);
OnRecordNew();
}

[Kläser Andreas]

Which parameter must I give to the function by this code by using the mfc function??

void CMP3Locater2002ODBCView::OnOpenDirectory()
{
// TODO: Code für Befehlsbehandlungsroutine hier einfügen
BROWSEINFO bi = { 0 };
TCHAR path[MAX_PATH];
char mydir[MAX_PATH];

bi.lpszTitle = _T("Wähle ein Verzeichnis das ausgelesen werden soll!");
bi.pszDisplayName = path;
LPITEMIDLIST pidl = SHBrowseForFolder ( &bi );

if ( pidl != 0 )
{
SHGetPathFromIDList(pidl, mydir); // besorgt den Namen des Ordners
if (CString(mydir).IsEmpty())
{
AfxMessageBox("Wähle ein gültiges Verzeichnis !!!");
OnOpenDirectory(); //Siehe hierzu Zeile 6 dieses Postings ;-)
}
}
//Dateien öffnen nur MP3 bis jetzt möglich!!!!!
SearchDirectory();
TagReadingForFile();
OnRecordNew;
}




Thanks andreas

[Kläser Andreas]

Which parameter must I give to the function by this code by using the mfc function??


void CMP3Locater2002ODBCView::OnOpenDirectory()
{
// TODO: Code für Befehlsbehandlungsroutine hier einfügen
BROWSEINFO bi = { 0 };
TCHAR path[MAX_PATH];
char mydir[MAX_PATH];

bi.lpszTitle = _T("Wähle ein Verzeichnis das ausgelesen werden soll!");
bi.pszDisplayName = path;
LPITEMIDLIST pidl = SHBrowseForFolder ( &bi );

if ( pidl != 0 )
{
SHGetPathFromIDList(pidl, mydir); // besorgt den Namen des Ordners
if (CString(mydir).IsEmpty())
{
AfxMessageBox("Wähle ein gültiges Verzeichnis !!!");
OnOpenDirectory(); //Siehe hierzu Zeile 6 dieses Postings ;-)
}
}
//Dateien öffnen nur MP3 bis jetzt möglich!!!!!
SearchDirectory(/*which Parameters*/);
TagReadingForFile(/*here I msut enter the File name*/);
OnRecordNew();
}





must i make a for.. do ... function to open every file next by next???

Greats Andreas