### Eclipse Workspace Patch 1.0
#P org.eclipse.swt
Index: Eclipse SWT/win32/org/eclipse/swt/widgets/Scrollable.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/widgets/Scrollable.java,v
retrieving revision 1.38
diff -u -r1.38 Scrollable.java
--- Eclipse SWT/win32/org/eclipse/swt/widgets/Scrollable.java	31 May 2007 22:04:16 -0000	1.38
+++ Eclipse SWT/win32/org/eclipse/swt/widgets/Scrollable.java	24 Jun 2007 19:24:48 -0000
@@ -259,6 +259,8 @@
 	return result;
 }
 
+private int lastWheelDelta = 0;
+
 LRESULT WM_MOUSEWHEEL (int wParam, int lParam) {
 	LRESULT result = super.WM_MOUSEWHEEL (wParam, lParam);
 	if (result != null) return result;
@@ -274,7 +276,8 @@
 		if (msg == 0) return result;
 		int [] value = new int [1];
 		OS.SystemParametersInfo (OS.SPI_GETWHEELSCROLLLINES, 0, value, 0);
-		int delta = (short) (wParam >> 16);
+		int delta = ((short) (wParam >> 16)) + lastWheelDelta;
+		lastWheelDelta = delta % OS.WHEEL_DELTA;
 		int code = 0, count = 0;
   		if (value [0] == OS.WHEEL_PAGESCROLL) {	
    			code = delta < 0 ? OS.SB_PAGEDOWN : OS.SB_PAGEUP;
Index: Eclipse SWT/win32/org/eclipse/swt/widgets/Widget.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/widgets/Widget.java,v
retrieving revision 1.119
diff -u -r1.119 Widget.java
--- Eclipse SWT/win32/org/eclipse/swt/widgets/Widget.java	31 May 2007 22:04:12 -0000	1.119
+++ Eclipse SWT/win32/org/eclipse/swt/widgets/Widget.java	24 Jun 2007 19:24:48 -0000
@@ -1971,9 +1971,12 @@
 	return result;
 }
 
+private int lastWheelDelta = 0;
+
 LRESULT wmMouseWheel (int hwnd, int wParam, int lParam) {
 	if (!hooks (SWT.MouseWheel) && !filters (SWT.MouseWheel)) return null;
-	int delta = wParam >> 16;
+	int delta = (wParam >> 16) + lastWheelDelta;
+	lastWheelDelta = delta % OS.WHEEL_DELTA;
 	int [] value = new int [1];
 	int count, detail;
 	OS.SystemParametersInfo (OS.SPI_GETWHEELSCROLLLINES, 0, value, 0);