From 1005eaaa6884aeb18087f93e068e93f8d663643f Mon Sep 17 00:00:00 2001
From: Maxime Chevalier-Boisvert <maximechevalierb@gmail.com>
Date: Sat, 30 Sep 2023 17:29:06 -0400
Subject: [PATCH] Document potentially negative mouse coordinates.

---
 api/syscalls.json    | 2 +-
 ncc/examples/paint.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/api/syscalls.json b/api/syscalls.json
index 01863dac..c7660759 100644
--- 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
index e10c69f0..6f809e5f 100644
--- 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)
     {