From a753152bf92f365afa6976293dec0dc03717c091 Mon Sep 17 00:00:00 2001
From: Jesse Luehrs <doy@tozt.net>
Date: Thu, 28 Apr 2016 03:23:14 -0400
Subject: one more method

---
 src/screen.rs | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/screen.rs b/src/screen.rs
index 2312243..fd143d7 100644
--- a/src/screen.rs
+++ b/src/screen.rs
@@ -339,6 +339,14 @@ impl Screen {
         }
     }
 
+    pub fn alternate_buffer_active(&self) -> bool {
+        let Screen(screen_impl) = *self;
+        let prefix: *mut ScreenPrefix = unsafe {
+            std::mem::transmute(screen_impl)
+        };
+        return !unsafe { (*prefix).alternate }.is_null();
+    }
+
     pub fn check_visual_bell(&self) -> bool {
         let Screen(screen_impl) = *self;
         unsafe {
-- 
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