From 8d03a3255cd528345f8dba7fb65b76d3f50215d7 Mon Sep 17 00:00:00 2001
From: Maarten Hoogendoorn <maarten@moretea.nl>
Date: Fri, 29 Jan 2016 23:11:52 +0100
Subject: [PATCH] Add registration of user events.

---
 src/sdl2/event.rs | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/src/sdl2/event.rs b/src/sdl2/event.rs
index eea6483a..063798cf 100644
--- a/src/sdl2/event.rs
+++ b/src/sdl2/event.rs
@@ -103,6 +103,18 @@ impl ::EventSubsystem {
             }
         }
     }
+
+    /// Registers a custom events.
+    /// If `Ok(nr) = register_event(2);`, then the caller has sucessfully created the custom events `nr` and `nr + 1`
+    pub fn register_events(&self, nr: u32) -> SdlResult<u32> {
+        let result = unsafe { ll::SDL_RegisterEvents(nr as ::libc::c_int) };
+        const ERR_NR:u32 = ::std::u32::MAX - 1;
+
+        match result {
+            ERR_NR => { Err(ErrorMessage("No more user events can be created; SDL_LASTEVENT reached".to_owned())) },
+            _ => Ok(result)
+        }
+    }
 }
 
 /// Types of events that can be delivered.