From 514fcf3be9ba65665ea1221576b39133e1d406ca Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Axel=20D=C3=B6rfler?= <axeld@pinc-software.de>
Date: Wed, 15 Jul 2009 08:07:44 +0000
Subject: [PATCH] * Pass the mouse wheel message to our parent (ie. the next
 handler) if we don't   have any scrollers.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31580 a95241bf-73f2-0310-859d-f6bbb57e9c96
---
 src/kits/interface/View.cpp | 17 +++++++++++------
 1 file changed, 11 insertions(+), 6 deletions(-)

diff --git a/src/kits/interface/View.cpp b/src/kits/interface/View.cpp
index 616b6843b0..fe3094c991 100644
--- a/src/kits/interface/View.cpp
+++ b/src/kits/interface/View.cpp
@@ -4167,18 +4167,22 @@ BView::MessageReceived(BMessage* msg)
 
 			case B_MOUSE_WHEEL_CHANGED:
 			{
-				float deltaX = 0.0f, deltaY = 0.0f;
-
 				BScrollBar* horizontal = ScrollBar(B_HORIZONTAL);
+				BScrollBar* vertical = ScrollBar(B_VERTICAL);
+				if (horizontal == NULL && vertical == NULL) {
+					// Pass the message to the next handler
+					BHandler::MessageReceived(msg);
+					break;
+				}
+
+				float deltaX = 0.0f, deltaY = 0.0f;
 				if (horizontal != NULL)
 					msg->FindFloat("be:wheel_delta_x", &deltaX);
-
-				BScrollBar* vertical = ScrollBar(B_VERTICAL);
 				if (vertical != NULL)
 					msg->FindFloat("be:wheel_delta_y", &deltaY);
 
 				if (deltaX == 0.0f && deltaY == 0.0f)
-					return;
+					break;
 
 				float smallStep, largeStep;
 				if (horizontal != NULL) {
@@ -4210,7 +4214,8 @@ BView::MessageReceived(BMessage* msg)
 			}
 
 			default:
-				return BHandler::MessageReceived(msg);
+				BHandler::MessageReceived(msg);
+				break;
 		}
 
 		return;