Thread: Sorting ListView columns

How can i sort a ListView column by the alphabetical order?

thank you

It isn´t working, do i have to especifically create the list view with this style or can i change it during runtime?

it isn´t working even when i create the list view with the LVS_ASCENDING control. I put the items in the list view during run-time, i think thats the problem. Any other sugestions?

Code:

...

int allocate = NumberLetters > (sizeof(WORD)/sizeof(WCHAR)) ? NumberLetters : (sizeof(WORD)/sizeof(WCHAR)) ;
						
	        WCHAR * buffer = new WCHAR[allocate];
		*((LPWORD)buffer ) = allocate;
		SendDlgItemMessage( hwndDlg, EDIT_BOX, EM_GETLINE, (WPARAM) 0, (LPARAM) buffer );
		std::basic_string<WCHAR> FilePath(buffer, NumberLetters);

		Player.AddMediaToLibrary( FilePath, hwndDlg ); 

...

int cMusicPlayer::AddMediaToLibrary(std::basic_string<WCHAR> Path, HWND hWndListView)
{
	cUserInterface UI;
	cString String;

	DWORD Result = GetFileAttributes(Path.c_str());
	WIN32_FIND_DATA FindFileData;
	HANDLE hFind = INVALID_HANDLE_VALUE;
	std::basic_string<WCHAR> SearchPath = Path;
	SearchPath += L"\\*.mp3";
	hFind = FindFirstFile( SearchPath.c_str(), &FindFileData );

	if (hFind == INVALID_HANDLE_VALUE)
	{
		MessageBox(NULL, String.GetString(IDS_NO_FILES).c_str(), L"Error", MB_ICONERROR);
	}
	else
	{
		Path += L"\\";

		UI.AddListViewItems( Path, FindFileData.cFileName, GetDlgItem(hWndListView, ID_LISTVIEW) );
	}
		
	while (FindNextFile(hFind, &FindFileData) != 0)
	{
		UI.AddListViewItems( Path, FindFileData.cFileName, GetDlgItem(hWndListView, ID_LISTVIEW) );	
	}

...

BOOL cUserInterface::AddListViewItems(std::basic_string<WCHAR> FilePath, std::basic_string<WCHAR> FileName, HWND hWndListView)
{
	cString String;
	MP3FileInfo mp3fi;

	FilePath += FileName;
	mp3fi.Init( String.ToMultibyte(FilePath,CP_ACP,0).c_str() );
	
	std::basic_string<WCHAR> artist;
	std::basic_string<WCHAR> album;
	std::basic_string<WCHAR> title;
	
	if (mp3fi.szArtist != NULL)
		artist = String.ToWideChar(mp3fi.szArtist, CP_ACP,0);
	else 
		artist = String.GetString( IDS_UNKNOWN );
	if (mp3fi.szAlbum != NULL)
		album = String.ToWideChar(mp3fi.szAlbum, CP_ACP,0);
	else 
		album = String.GetString( IDS_UNKNOWN );
	if (mp3fi.szTitle != NULL)
		title = String.ToWideChar(mp3fi.szTitle, CP_ACP,0);
	else 
		title = String.GetString( IDS_UNKNOWN );

	if ( FindListViewString( hWndListView, title ) == TRUE && FindListViewString( hWndListView, title ) == TRUE )
		return true;

	LVITEM   lv  = { 0 };
	
	lv.iItem = ItemCount;
    ListView_InsertItem( hWndListView, &lv);

	ListView_SetItemText( hWndListView, ItemCount, 0, const_cast<LPWSTR>(title.c_str()) );
	ListView_SetItemText( hWndListView, ItemCount, 1, const_cast<LPWSTR>(artist.c_str()) );
	ListView_SetItemText( hWndListView, ItemCount, 2, const_cast<LPWSTR>(album.c_str()) );
	ListView_SetItemText( hWndListView, ItemCount, 3, const_cast<LPWSTR>(FilePath.c_str()) );
    
	ListView_SetCheckState( hWndListView, ItemCount, TRUE);

	ItemCount++;

	return true;
}

Im trying to sort any column that i have in the list view (artist, title, album and path) in the alphabetical order.

Any clue?