+ /* Initialization done.
+ * Release the mutex to unblock other instances */
+ ReleaseMutex( hmutex );
+ }
+ else
+ {
+ /* Another instance is running */
+
+ HWND ipcwindow;
+
+ /* Wait until the 1st instance is initialized */
+ WaitForSingleObject( hmutex, INFINITE );
+
+ /* Locate the window created by the IPC helper thread of the
+ * 1st instance */
+ if( !( ipcwindow = FindWindow( 0, L"VLC ipc "VERSION ) ) )
+ {
+ msg_Err( p_this, "one instance mode DISABLED "
+ "(couldn't find 1st instance of program)" );
+ ReleaseMutex( hmutex );
+ return;
+ }
+
+ /* We assume that the remaining parameters are filenames
+ * and their input options */
+ if( *pi_argc - 1 >= optind )
+ {
+ COPYDATASTRUCT wm_data;
+ int i_opt;
+ vlc_ipc_data_t *p_data;
+ size_t i_data = sizeof (*p_data);
+
+ for( i_opt = optind; i_opt < *pi_argc; i_opt++ )
+ {
+ i_data += sizeof (size_t);
+ i_data += strlen( ppsz_argv[ i_opt ] ) + 1;
+ }
+
+ p_data = malloc( i_data );
+ p_data->argc = *pi_argc - optind;
+ p_data->enqueue = config_GetInt( p_this, "playlist-enqueue" );
+ i_data = 0;
+ for( i_opt = optind; i_opt < *pi_argc; i_opt++ )
+ {
+ size_t i_len = strlen( ppsz_argv[ i_opt ] ) + 1;
+ /* Windows will never switch to an architecture
+ * with stronger alignment requirements, right. */
+ *((size_t *)(p_data->data + i_data)) = i_len;
+ i_data += sizeof (size_t);
+ memcpy( &p_data->data[i_data], ppsz_argv[ i_opt ], i_len );
+ i_data += i_len;
+ }
+ i_data += sizeof (*p_data);
+
+ /* Send our playlist items to the 1st instance */
+ wm_data.dwData = 0;
+ wm_data.cbData = i_data;
+ wm_data.lpData = p_data;
+ SendMessage( ipcwindow, WM_COPYDATA, 0, (LPARAM)&wm_data );
+ }
+
+ /* Initialization done.
+ * Release the mutex to unblock other instances */
+ ReleaseMutex( hmutex );
+
+ /* Bye bye */
+ system_End( p_this );
+ exit( 0 );
+ }
+ }
+
+#endif
+}
+
+static void IPCHelperThread( vlc_object_t *p_this )
+{
+ HWND ipcwindow;
+ MSG message;
+
+ ipcwindow =
+ CreateWindow( L"STATIC", /* name of window class */
+ L"VLC ipc "VERSION, /* window title bar text */
+ 0, /* window style */
+ 0, /* default X coordinate */
+ 0, /* default Y coordinate */
+ 0, /* window width */
+ 0, /* window height */
+ NULL, /* no parent window */
+ NULL, /* no menu in this window */
+ GetModuleHandle(NULL), /* handle of this program instance */
+ NULL ); /* sent to WM_CREATE */
+
+ SetWindowLongPtr( ipcwindow, GWLP_WNDPROC, (LRESULT)WMCOPYWNDPROC );
+ SetWindowLongPtr( ipcwindow, GWLP_USERDATA, (LONG_PTR)p_this );
+
+ /* Signal the creation of the thread and events queue */
+ vlc_thread_ready( p_this );
+
+ while( GetMessage( &message, NULL, 0, 0 ) )
+ {
+ TranslateMessage( &message );
+ DispatchMessage( &message );
+ }
+}
+
+LRESULT CALLBACK WMCOPYWNDPROC( HWND hwnd, UINT uMsg, WPARAM wParam,
+ LPARAM lParam )
+{
+ if( uMsg == WM_COPYDATA )