The SDL_BUTTON_*MASK defines must come immediately after the SDL_MouseButtonFlags typedef to be associated

include/SDL3/SDL_mouse.h

@@ -147,6 +147,19 @@ typedef enum SDL_MouseWheelDirection
  */
 typedef Uint32 SDL_MouseButtonFlags;
 
+#define SDL_BUTTON_LEFT     1
+#define SDL_BUTTON_MIDDLE   2
+#define SDL_BUTTON_RIGHT    3
+#define SDL_BUTTON_X1       4
+#define SDL_BUTTON_X2       5
+
+#define SDL_BUTTON_MASK(X)  (1u << ((X)-1))
+#define SDL_BUTTON_LMASK    SDL_BUTTON_MASK(SDL_BUTTON_LEFT)
+#define SDL_BUTTON_MMASK    SDL_BUTTON_MASK(SDL_BUTTON_MIDDLE)
+#define SDL_BUTTON_RMASK    SDL_BUTTON_MASK(SDL_BUTTON_RIGHT)
+#define SDL_BUTTON_X1MASK   SDL_BUTTON_MASK(SDL_BUTTON_X1)
+#define SDL_BUTTON_X2MASK   SDL_BUTTON_MASK(SDL_BUTTON_X2)
+
 /**
  * A callback used to transform mouse motion delta from raw values.
  *
@@ -186,20 +199,6 @@ typedef void (SDLCALL *SDL_MouseMotionTransformCallback)(
     float *x, float *y
 );
 
-#define SDL_BUTTON_LEFT     1
-#define SDL_BUTTON_MIDDLE   2
-#define SDL_BUTTON_RIGHT    3
-#define SDL_BUTTON_X1       4
-#define SDL_BUTTON_X2       5
-
-#define SDL_BUTTON_MASK(X)  (1u << ((X)-1))
-#define SDL_BUTTON_LMASK    SDL_BUTTON_MASK(SDL_BUTTON_LEFT)
-#define SDL_BUTTON_MMASK    SDL_BUTTON_MASK(SDL_BUTTON_MIDDLE)
-#define SDL_BUTTON_RMASK    SDL_BUTTON_MASK(SDL_BUTTON_RIGHT)
-#define SDL_BUTTON_X1MASK   SDL_BUTTON_MASK(SDL_BUTTON_X1)
-#define SDL_BUTTON_X2MASK   SDL_BUTTON_MASK(SDL_BUTTON_X2)
-
-
 /* Function prototypes */
 
 /**