From 68045ce08f7b511107a19bf27679bef67dbaea88 Mon Sep 17 00:00:00 2001
From: Elias Naur <elias.naur@gmail.com>
Date: Wed, 12 Feb 2003 12:11:05 +0000
Subject: [PATCH] Don't allow the mouse to drift when failing poll

---
 src/native/win32/org_lwjgl_input_Mouse.cpp | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/src/native/win32/org_lwjgl_input_Mouse.cpp b/src/native/win32/org_lwjgl_input_Mouse.cpp
index 2d5d820e..9d0b9ddf 100644
--- a/src/native/win32/org_lwjgl_input_Mouse.cpp
+++ b/src/native/win32/org_lwjgl_input_Mouse.cpp
@@ -266,9 +266,13 @@ void UpdateMouseFields() {
   HRESULT                 hRes; 
 
   // get data from the Mouse 
-  hRes = mDIDevice->GetDeviceState(sizeof(DIMOUSESTATE), &diMouseState); 
-
+  hRes = mDIDevice->GetDeviceState(sizeof(DIMOUSESTATE), &diMouseState);
   if (hRes != DI_OK) { 
+    // Don't allow the mouse to drift when failed
+    diMouseState.lX = 0;
+    diMouseState.lY = 0;
+    diMouseState.lZ = 0;
+
     // did the read fail because we lost input for some reason? 
     // if so, then attempt to reacquire. 
     if(hRes == DIERR_INPUTLOST || hRes == DIERR_NOTACQUIRED) {
@@ -281,7 +285,6 @@ void UpdateMouseFields() {
       printf("Error getting mouse state: %d\n", hRes);
 #endif
     }
-    return;
   }
 
   mEnvironment->SetStaticIntField(clsMouse, fidMDX, (jint) diMouseState.lX);