diff --git a/bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/widgets/ToolBar.java b/bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/widgets/ToolBar.java
index 68e839fcefe..04b02f53de4 100644
--- a/bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/widgets/ToolBar.java	
+++ b/bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/widgets/ToolBar.java	
@@ -55,7 +55,7 @@ public class ToolBar extends Composite {
 	ToolItem [] items;
 	ToolItem [] tabItemList;
 	boolean ignoreResize, ignoreMouse;
-	ImageList imageList, disabledImageList, hotImageList;
+	private ImageList imageList, disabledImageList, hotImageList;
 	static final long ToolBarProc;
 	static final TCHAR ToolBarClass = new TCHAR (OS.TOOLBARCLASSNAME, true);
 	static {
@@ -143,6 +143,32 @@ public ToolBar (Composite parent, int style) {
 	}
 }
 
+/*
+ * The given image bounds are the bounds of the tool item's image and determine which shared image
+ * lists are used. They are intentionally not derived from the images actually added: for a disabled
+ * item with CHECK or RADIO style, those are the disabled images, which may have different bounds.
+ * Note that the icon size of an image list is defined by the first image added to it.
+ */
+int addImage(Rectangle imageBounds, Image image, Image hotImage, Image disabledImage) {
+	int listStyle = style & SWT.RIGHT_TO_LEFT;
+	if (imageList == null) {
+		imageList = display.getImageListToolBar(listStyle, imageBounds.width, imageBounds.height, getAutoscalingZoom());
+	}
+	if (hotImageList == null) {
+		hotImageList = display.getImageListToolBarHot(listStyle, imageBounds.width, imageBounds.height,
+				getAutoscalingZoom());
+	}
+	if (disabledImageList == null) {
+		disabledImageList = display.getImageListToolBarDisabled(listStyle, imageBounds.width, imageBounds.height,
+				getAutoscalingZoom());
+	}
+	int index = imageList.add(image);
+	hotImageList.add(hotImage);
+	disabledImageList.add(disabledImage);
+	refreshImageLists(true);
+	return index;
+}
+
 @Override
 long callWindowProc (long hwnd, int msg, long wParam, long lParam) {
 	if (handle == 0) return 0;
@@ -199,6 +225,10 @@ public void layout (boolean changed) {
 	super.layout(changed);
 }
 
+void clearImage(int index) {
+	putImage(index, null, null, null);
+}
+
 void clearSizeCache(boolean changed) {
 	// If changed, discard the cached layout information
 	if (changed) {
@@ -495,18 +525,6 @@ void enableWidget (boolean enabled) {
 	}
 }
 
-ImageList getDisabledImageList () {
-	return disabledImageList;
-}
-
-ImageList getHotImageList () {
-	return hotImageList;
-}
-
-ImageList getImageList () {
-	return imageList;
-}
-
 /**
  * Returns the item at the given, zero-relative index in the
  * receiver. Throws an exception if the index is out of range.
@@ -869,6 +887,56 @@ boolean mnemonicMatch (char ch) {
 	return findMnemonic (items [id [0]].text) != '\0';
 }
 
+void putImage(int index, Image image, Image hotImage, Image disabledImage) {
+	if (imageList != null) {
+		imageList.put(index, image);
+	}
+	if (hotImageList != null) {
+		hotImageList.put(index, hotImage);
+	}
+	if (disabledImageList != null) {
+		disabledImageList.put(index, disabledImage);
+	}
+}
+
+private void refreshImageLists(boolean itemsChanged) {
+	int zoom = getAutoscalingZoom();
+	long imageListHandle = getImageListHandle(imageList, zoom);
+	long hotImageListHandle = getImageListHandle(hotImageList, zoom);
+	long disabledImageListHandle = getImageListHandle(disabledImageList, zoom);
+	boolean imageListOutdated = isImageListOutdated(OS.TB_GETIMAGELIST, imageListHandle);
+	boolean hotImageListOutdated = isImageListOutdated(OS.TB_GETHOTIMAGELIST, hotImageListHandle);
+	boolean disabledImageListOutdated = isImageListOutdated(OS.TB_GETDISABLEDIMAGELIST, disabledImageListHandle);
+	if (!imageListOutdated && !hotImageListOutdated && !disabledImageListOutdated) {
+		return;
+	}
+	// clear the BTNS_DROPDOWN bits while the image lists are exchanged, see
+	// setDropDownItems()
+	if (itemsChanged) {
+		setDropDownItems(false);
+	}
+	if (imageListOutdated) {
+		OS.SendMessage(handle, OS.TB_SETIMAGELIST, 0, imageListHandle);
+	}
+	if (hotImageListOutdated) {
+		OS.SendMessage(handle, OS.TB_SETHOTIMAGELIST, 0, hotImageListHandle);
+	}
+	if (disabledImageListOutdated) {
+		OS.SendMessage(handle, OS.TB_SETDISABLEDIMAGELIST, 0, disabledImageListHandle);
+	}
+	if (itemsChanged) {
+		setDropDownItems(true);
+	}
+}
+
+private static long getImageListHandle(ImageList imageList, int zoom) {
+	return imageList != null ? imageList.getHandle(zoom) : 0;
+}
+
+private boolean isImageListOutdated(int getMessageCode, long expectedHandle) {
+	return OS.SendMessage(handle, getMessageCode, 0, 0) != expectedHandle;
+}
+
 @Override
 void releaseChildren (boolean destroy) {
 	if (items != null) {
@@ -1000,19 +1068,6 @@ void setDropDownItems (boolean set) {
 	}
 }
 
-void setDisabledImageList (ImageList imageList) {
-	long hImageList = 0;
-	if ((disabledImageList = imageList) != null) {
-		hImageList = OS.SendMessage(handle, OS.TB_GETDISABLEDIMAGELIST, 0, 0);
-		long newImageList = disabledImageList.getHandle(getAutoscalingZoom());
-		if (hImageList == newImageList) return;
-		hImageList = newImageList;
-	}
-	setDropDownItems (false);
-	OS.SendMessage (handle, OS.TB_SETDISABLEDIMAGELIST, 0, hImageList);
-	setDropDownItems (true);
-}
-
 @Override
 public void setFont (Font font) {
 	checkWidget ();
@@ -1039,32 +1094,6 @@ public void setFont (Font font) {
 	layoutItems ();
 }
 
-void setHotImageList (ImageList imageList) {
-	long hImageList = 0;
-	if ((hotImageList = imageList) != null) {
-		hImageList = OS.SendMessage(handle, OS.TB_GETHOTIMAGELIST, 0, 0);
-		long newImageList = hotImageList.getHandle(getAutoscalingZoom());
-		if (hImageList == newImageList) return;
-		hImageList = newImageList;
-	}
-	setDropDownItems (false);
-	OS.SendMessage (handle, OS.TB_SETHOTIMAGELIST, 0, hImageList);
-	setDropDownItems (true);
-}
-
-void setImageList (ImageList imageList) {
-	long hImageList = 0;
-	if ((this.imageList = imageList) != null) {
-		hImageList = OS.SendMessage(handle, OS.TB_GETIMAGELIST, 0, 0);
-		long newImageList = imageList.getHandle(getAutoscalingZoom());
-		if (hImageList == newImageList) return;
-		hImageList = newImageList;
-	}
-	setDropDownItems (false);
-	OS.SendMessage (handle, OS.TB_SETIMAGELIST, 0, hImageList);
-	setDropDownItems (true);
-}
-
 @Override
 public boolean setParent (Composite parent) {
 	checkWidget ();
@@ -1254,12 +1283,10 @@ void updateOrientation () {
 		display.releaseToolImageList (imageList);
 		display.releaseToolHotImageList (hotImageList);
 		display.releaseToolDisabledImageList (disabledImageList);
-		OS.SendMessage (handle, OS.TB_SETIMAGELIST, 0, newImageList.getHandle(getAutoscalingZoom()));
-		OS.SendMessage (handle, OS.TB_SETHOTIMAGELIST, 0, newHotImageList.getHandle(getAutoscalingZoom()));
-		OS.SendMessage (handle, OS.TB_SETDISABLEDIMAGELIST, 0, newDisabledImageList.getHandle(getAutoscalingZoom()));
 		imageList = newImageList;
 		hotImageList = newHotImageList;
 		disabledImageList = newDisabledImageList;
+		refreshImageLists(false);
 		OS.InvalidateRect (handle, null, true);
 	}
 }
@@ -1744,9 +1771,7 @@ record ToolItemData(ToolItem toolItem, TBBUTTON button) {
 		}
 	}
 	// Refresh the image lists so the image list for the correct zoom is used
-	setImageList(getImageList());
-	setDisabledImageList(getDisabledImageList());
-	setHotImageList(getHotImageList());
+	refreshImageLists(true);
 	boolean toolBarEnabled = getEnabled();
 	for (int i = 0; i < itemCount; i++) {
 		ToolItem item = toolItems[i];
diff --git a/bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/widgets/ToolItem.java b/bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/widgets/ToolItem.java
index 94b020a5a77..b75fbad4c86 100644
--- a/bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/widgets/ToolItem.java	
+++ b/bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/widgets/ToolItem.java	
@@ -535,12 +535,7 @@ void releaseImages () {
 	* an image and one is never assigned, this is not a problem.
 	*/
 	if ((info.fsStyle & OS.BTNS_SEP) == 0 && info.iImage != OS.I_IMAGENONE) {
-		ImageList imageList = parent.getImageList ();
-		ImageList hotImageList = parent.getHotImageList ();
-		ImageList disabledImageList = parent.getDisabledImageList();
-		if (imageList != null) imageList.put (info.iImage, null);
-		if (hotImageList != null) hotImageList.put (info.iImage, null);
-		if (disabledImageList != null) disabledImageList.put (info.iImage, null);
+		parent.clearImage(info.iImage);
 	}
 }
 
@@ -1099,21 +1094,7 @@ void updateImages (boolean enabled) {
 	info.dwMask = OS.TBIF_IMAGE;
 	OS.SendMessage (hwnd, OS.TB_GETBUTTONINFO, id, info);
 	if (info.iImage == OS.I_IMAGENONE && image == null) return;
-	ImageList imageList = parent.getImageList ();
-	ImageList hotImageList = parent.getHotImageList ();
-	ImageList disabledImageList = parent.getDisabledImageList();
 	if (info.iImage == OS.I_IMAGENONE) {
-		Rectangle boundsInPoints = image.getBounds();
-		int listStyle = parent.style & SWT.RIGHT_TO_LEFT;
-		if (imageList == null) {
-			imageList = display.getImageListToolBar (listStyle, boundsInPoints.width, boundsInPoints.height, getAutoscalingZoom());
-		}
-		if (disabledImageList == null) {
-			disabledImageList = display.getImageListToolBarDisabled (listStyle, boundsInPoints.width, boundsInPoints.height, getAutoscalingZoom());
-		}
-		if (hotImageList == null) {
-			hotImageList = display.getImageListToolBarHot (listStyle, boundsInPoints.width, boundsInPoints.height, getAutoscalingZoom());
-		}
 		Image disabled = disabledImage;
 		if (disabledImage == null) {
 			if (disabledImage2 != null) disabledImage2.dispose ();
@@ -1134,27 +1115,19 @@ void updateImages (boolean enabled) {
 		if ((style & (SWT.CHECK | SWT.RADIO)) != 0) {
 			if (!enabled) image2 = hot = disabled;
 		}
-		info.iImage = imageList.add (image2);
-		disabledImageList.add (disabled);
-		hotImageList.add (hot != null ? hot : image2);
-		parent.setImageList (imageList);
-		parent.setDisabledImageList (disabledImageList);
-		parent.setHotImageList (hotImageList);
+		info.iImage = parent.addImage(image.getBounds(), image2, hot != null ? hot : image2, disabled);
 	} else {
 		Image disabled = null;
-		if (disabledImageList != null) {
-			if (image != null) {
-				if (disabledImage2 != null) disabledImage2.dispose ();
-				disabledImage2 = null;
-				disabled = disabledImage;
-				if (disabledImage == null) {
-					disabled = image;
-					if (!enabled) {
-						disabled = disabledImage2 = new Image (display, image, SWT.IMAGE_DISABLE);
-					}
+		if (image != null) {
+			if (disabledImage2 != null) disabledImage2.dispose ();
+			disabledImage2 = null;
+			disabled = disabledImage;
+			if (disabledImage == null) {
+				disabled = image;
+				if (!enabled) {
+					disabled = disabledImage2 = new Image (display, image, SWT.IMAGE_DISABLE);
 				}
 			}
-			disabledImageList.put (info.iImage, disabled);
 		}
 		/*
 		* Bug in Windows.  When a tool item with the style
@@ -1167,12 +1140,8 @@ void updateImages (boolean enabled) {
 		if ((style & (SWT.CHECK | SWT.RADIO)) != 0) {
 			if (!enabled) image2 = hot = disabled;
 		}
-		if (imageList != null) {
-			imageList.put (info.iImage, image2);
-		}
-		if (hotImageList != null) {
-			hotImageList.put (info.iImage, hot != null ? hot : image2);
-		}
+
+		parent.putImage(info.iImage, image2, hot != null ? hot : image2, disabled);
 		if (image == null) info.iImage = OS.I_IMAGENONE;
 	}