[feat] add HarmonyOS desktop and mobile clients，issue #117

apps/desktop/src/platform/harmony/gui/window_state.h

@@ -0,0 +1,16 @@
+/*
+ * @Author: DI JUNKUN
+ * @Date: 2026-10-15
+ * Copyright (c) 2026 by DI JUNKUN, All Rights Reserved.
+ */
+
+#ifndef _WINDOW_STATE_H_
+#define _WINDOW_STATE_H_
+
+namespace slint { class Window; }
+namespace crossdesk {
+// GUI-thread query of the native window focus delivered by Harmony ArkUI.
+bool IsHarmonyWindowActive(const slint::Window& window);
+}
+
+#endif