From 4cf9c5909d926ec322ed1c7df47f95bd872bb607 Mon Sep 17 00:00:00 2001
From: Peter Hutterer <peter@cs.unisa.edu.au>
Date: Tue, 15 Apr 2008 13:56:11 +0930
Subject: [PATCH] Xi: fix up button count.

Some leftover code from the previously used alloc/free device classes left us
with a incorrect button count. So a button release didn't come through if
a different pointer was moved after the button press.
---
 Xi/exevents.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Xi/exevents.c b/Xi/exevents.c
index 4417e6c61..4dd9fceb8 100644
--- a/Xi/exevents.c
+++ b/Xi/exevents.c
@@ -603,6 +603,8 @@ DeepCopyDeviceClasses(DeviceIntPtr from, DeviceIntPtr to)
             }
         }
 
+        to->button->buttonsDown = 0;
+        memset(to->button->down, 0, MAP_LENGTH);
         /* merge button states from all attached devices */
         for (sd = inputInfo.devices; sd; sd = sd->next)
         {
@@ -612,6 +614,7 @@ DeepCopyDeviceClasses(DeviceIntPtr from, DeviceIntPtr to)
             for (i = 0; i < MAP_LENGTH; i++)
             {
                 to->button->down[i] += sd->button->down[i];
+                to->button->buttonsDown++;
             }
         }
 #ifdef XKB