C / C++ / MFC

//INIT WINSOCK
    if (WSAStartup(MAKEWORD(2,2),&wsa) != 0){
        printf("Failed. Error Code : %d",WSAGetLastError());
        return 1;
    }
    //CREATE SOCKET
    if((s = socket(AF_INET , SOCK_STREAM , 0 )) == INVALID_SOCKET){
        printf("Could not create socket : %d" , WSAGetLastError());
    }
    //sockaddr_in structure
    server.sin_family = AF_INET;
    server.sin_addr.s_addr = INADDR_ANY;
    server.sin_port = htons( 8888 );
    //BIND
    if( bind(s ,(struct sockaddr *)&server , sizeof(server)) == SOCKET_ERROR){
        printf("Bind failed with error code : %d" , WSAGetLastError());
    }
    //LISTEN
    listen(s , 10000);
    //WAIT CONNECTION
    puts("Waiting for incoming connections...");
    while( TRUE ) {
        new_socket = accept(s , (struct sockaddr *)&client, &c);
        if (new_socket == INVALID_SOCKET){
            printf("accept failed with error code : %d" , WSAGetLastError());
        }else{
            clientInfo[cont].clientAddr = client ;
            clientInfo[cont].hClientSocket = new_socket;
            hClientThread[cont] = CreateThread(NULL,0,( LPTHREAD_START_ROUTINE ) cliTh1,( LPVOID ) &clientInfo[cont],0,&dwThreadId ) ;

            if ( hClientThread[cont] == NULL ){
                printf("Unable to create client thread");
            } else {
                printf("thread OK\n");
                CloseHandle( hClientThread[cont] ) ;
                cont++;
            }
        }
    }

DWORD  WINAPI cliTh1( LPVOID lpData ){
    struct CLIENT_INFO *pClientInfo;
    char szClientMsg[250];
    static int j = 0;
    int i = 0;
    char *message;

    pClientInfo = (struct CLIENT_INFO *)lpData ;
    printf("SOCKET:%d - THREAD_ID:%ld\n", pClientInfo->hClientSocket, GetCurrentThreadId());
    while ( 1 ){
        if(WSAGetLastError()){
            printf("CURRENT:%ld\n", GetCurrentThreadId());
            closesocket(pClientInfo->hClientSocket);
            ExitThread(GetCurrentThreadId());
        }
        if(recv( pClientInfo -> hClientSocket, szClientMsg, sizeof( szClientMsg ), 0 ) > 0){
            if(j>5000){j=0;};
            strcpy(bufferRx[j].packet, szClientMsg);
            for(i=0; i < sizeof( szClientMsg ); i++){
                szClientMsg[i] = 0;
            }
            printf("RECEIVE %d: %s",j, bufferRx[j].packet);
            j++;
        }
    }
    return(TRUE);
}

CFileDialog dlgFileBrowse(true);

	UINT uiFileBrowseDlgRC;

// OK here 
	RecursiveDelete("F:");		// 20150615  

//
	uiFileBrowseDlgRC = dlgFileBrowse.DoModal();

//   FAILS HERE - YES


void CDeleteFolderTestDlg::RecursiveDelete(CString szPath)
{
	CFileFind ff;
	BOOL bResult;
	CString path = szPath;
	
	if(path.Right(1) != '\\')	
		path += '\\';			

	path += "*.*";

	bResult = ff.FindFile(path);
	BOOL bItemDelete;
	DWORD dwLastError;
	CString szFilePath;

	while(bResult)
	{
		bResult = ff.FindNextFile();
		if (!ff.IsDots() && !ff.IsDirectory())
		{
			szFilePath = ff.GetFilePath();
			bItemDelete = DeleteFile(szFilePath);
			if(!bItemDelete)
				dwLastError = GetLastError();
		}
		else if (ff.IsDirectory() && !ff.IsDots())	
		{
			path = ff.GetFilePath();

			RecursiveDelete(path);

			bItemDelete = RemoveDirectory(path);
			if(!bItemDelete)
				dwLastError = GetLastError();
		}
	}
}

//	RecursiveDelete("F:");