It's not AltGr, it's the Windows (or ⌘) key.
@ -503,7 +503,7 @@ class GlfwApplication::InputEvent {
Shift = GLFW_MOD_SHIFT, /**< Shift */
Ctrl = GLFW_MOD_CONTROL, /**< Ctrl */
Alt = GLFW_MOD_ALT, /**< Alt */
AltGr = GLFW_MOD_SUPER /**< AltGr */
Super = GLFW_MOD_SUPER /**< Super key (Windows/⌘) */
};
/**