Add SDL_IsTraySupported

include/SDL3/SDL_tray.h

@@ -96,6 +96,25 @@ typedef Uint32 SDL_TrayEntryFlags;
  */
 typedef void (SDLCALL *SDL_TrayCallback)(void *userdata, SDL_TrayEntry *entry);
 
+/**
+ * Check whether or not tray icons can be created.
+ *
+ * Note that this function does not guarantee that SDL_CreateTray() will or will
+ * not work; you should still check SDL_CreateTray() for errors.
+ *
+ * Using tray icons require the video subsystem.
+ *
+ * \returns true if trays are available, false otherwise.
+ *
+ * \threadsafety This function should only be called on the main thread. It will
+ *               return false if not called on the main thread.
+ *
+ * \since This function is available since SDL 3.4.0.
+ *
+ * \sa SDL_CreateTray
+ */
+extern SDL_DECLSPEC bool SDLCALL SDL_IsTraySupported(void);
+
 /**
  * Create an icon to be placed in the operating system's tray, or equivalent.
  *