Function FindWindowByClass

src/window.cpp:1168–1175

* Find any window by its class. Useful when searching for a window that uses * the window number as a #WindowClass, like #WC_SEND_NETWORK_MSG. * @param cls Window class * @return Pointer to the found window, or \c nullptr if not available */

 * @return Pointer to the found window, or \c nullptr if not available
 */
Window *FindWindowByClass(WindowClass cls)
{
	for (Window *w : Window::Iterate()) {
		if (w->window_class == cls) return w;
	}

	return nullptr;
}

/**
 * Get the main window, i.e. FindWindowById(WC_MAIN_WINDOW, 0).