// Include the Essence system header. #include void _start() { // We're not using the C standard library, // so we need to initialise global constructors manually. _init(); while (true) { // Receive a message from the system. EsMessage *message = EsMessageReceive(); if (message->type == ES_MSG_INSTANCE_CREATE) { // The system wants us to create an instance of our application. // Call EsInstanceCreate with the message and application name. EsInstance *instance = EsInstanceCreate(message, "Hello", -1); // Create a text display with the "Hello, world!" message. EsTextDisplayCreate( instance->window, // Add the text display to the instance's window. ES_CELL_FILL, // The text display should fill the window. ES_STYLE_PANEL_WINDOW_BACKGROUND, // Use the window background style. "Hello, world!", -1); // Pass -1 for a zero-terminated string. // Keep receiving messages in a loop, // so the system can handle input messages for the window. } } }