Document potentially negative mouse coordinates.

maximecb · Sep 30, 2023 · 1005eaa · 1005eaa
1 parent 0c49eee
commit 1005eaa
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Showing 2 changed files with 2 additions and 2 deletions.
diff --git a/api/syscalls.json b/api/syscalls.json
@@ -290,7 +290,7 @@
         ],
         "permission": "window_display",
         "const_idx": 11,
-        "description": "Register a callback for mouse movement."
+        "description": "Register a callback for mouse movement. Mouse x/y coordinates are relative to the top-left corner of the window and may be negative if outside of the window."
       },
       {
         "name": "window_on_mousedown",

diff --git a/ncc/examples/paint.c b/ncc/examples/paint.c
@@ -120,7 +120,7 @@ void draw_palette()
 }
 
 // Mouve movement callback
-void mousemove(u64 window_id, u64 new_x, u64 new_y)
+void mousemove(u64 window_id, int new_x, int new_y)
 {
     if (drawing)
     {