From 47a60e40ddeeb0c3dd05582de479cd0cb0739c1d Mon Sep 17 00:00:00 2001
From: John Levon <levon@movementarian.org>
Date: Mon, 21 Oct 2002 04:46:26 +0000
Subject: [PATCH] Patch from Philippe Elie for making mouse wheel do something
 in Qt.

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@5452 a592a061-630c-0410-9148-cb99ea01b6c8
---
 src/frontends/qt2/ChangeLog      | 5 +++++
 src/frontends/qt2/QContentPane.C | 6 ++++++
 src/frontends/qt2/QContentPane.h | 3 ++-
 3 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/src/frontends/qt2/ChangeLog b/src/frontends/qt2/ChangeLog
index 56a75b7be3..f67aeba143 100644
--- a/src/frontends/qt2/ChangeLog
+++ b/src/frontends/qt2/ChangeLog
@@ -1,3 +1,8 @@
+2002-10-21  Philippe Elie  <phil.el@wanadoo.fr>
+
+	* QContentPane.h:
+	* QContentPane.C: implement wheelEvent	
+
 2002-10-20  Dekel Tsur  <dekelts@tau.ac.il>
 
 	* several files: Use QT_VERSION >= 300 instead of >= 0x030000
diff --git a/src/frontends/qt2/QContentPane.C b/src/frontends/qt2/QContentPane.C
index ccf92d74c2..e5201be836 100644
--- a/src/frontends/qt2/QContentPane.C
+++ b/src/frontends/qt2/QContentPane.C
@@ -133,6 +133,12 @@ void QContentPane::mouseMoveEvent(QMouseEvent * e)
 }
 
 
+void QContentPane::wheelEvent(QWheelEvent * e)
+{
+	wa_->scrollbar_->setValue(wa_->scrollbar_->value() - e->delta());
+}
+
+
 void QContentPane::keyPressEvent(QKeyEvent * e)
 {
 	lyxerr[Debug::KEY] << "Press key " << e->key()
diff --git a/src/frontends/qt2/QContentPane.h b/src/frontends/qt2/QContentPane.h
index c0f9278b54..88f995e154 100644
--- a/src/frontends/qt2/QContentPane.h
+++ b/src/frontends/qt2/QContentPane.h
@@ -69,7 +69,8 @@ protected:
 	void mouseDoubleClickEvent(QMouseEvent * e);
 	/// mouse motion
 	void mouseMoveEvent(QMouseEvent * e);
-
+	/// wheel event
+	void wheelEvent(QWheelEvent * e);
 	/// key press
 	void keyPressEvent(QKeyEvent * e);
 public slots: