remove NULL's
diff --git a/examples/org.eclipse.swt.examples/src/org/eclipse/swt/examples/accessibility/ControlsWithAccessibleNamesExample.java b/examples/org.eclipse.swt.examples/src/org/eclipse/swt/examples/accessibility/ControlsWithAccessibleNamesExample.java
index c87d4ad..7c900ce 100644
--- a/examples/org.eclipse.swt.examples/src/org/eclipse/swt/examples/accessibility/ControlsWithAccessibleNamesExample.java
+++ b/examples/org.eclipse.swt.examples/src/org/eclipse/swt/examples/accessibility/ControlsWithAccessibleNamesExample.java
@@ -474,9 +474,9 @@
 		overrideCCombo.getAccessible().addAccessibleListener(overrideAccessibleAdapter);
 				
 //		CTabFolder cTabFolder, overrideCTabFolder;
-		cTabFolder = new CTabFolder(shell, SWT.NULL);
+		cTabFolder = new CTabFolder(shell, SWT.NONE);
 		for (int i = 0; i < 3; i++) {
-			CTabItem item = new CTabItem(cTabFolder, SWT.NULL);
+			CTabItem item = new CTabItem(cTabFolder, SWT.NONE);
 			item.setText("CTabItem &" + i);
 			item.setToolTipText("TabItem ToolTip" + i);
 			Text itemText = new Text(cTabFolder, SWT.MULTI | SWT.BORDER);
@@ -485,9 +485,9 @@
 		}
 		cTabFolder.setSelection(cTabFolder.getItem(0));
 		
-		overrideCTabFolder = new CTabFolder(shell, SWT.NULL);
+		overrideCTabFolder = new CTabFolder(shell, SWT.NONE);
 		for (int i = 0; i < 3; i++) {
-			CTabItem item = new CTabItem(overrideCTabFolder, SWT.NULL);
+			CTabItem item = new CTabItem(overrideCTabFolder, SWT.NONE);
 			item.setText("CTabItem &" + i);
 			item.setToolTipText("TabItem ToolTip" + i);
 			Text itemText = new Text(overrideCTabFolder, SWT.MULTI | SWT.BORDER);
diff --git a/examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet274.java b/examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet274.java
index 4647e97..f84234d 100644
--- a/examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet274.java
+++ b/examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet274.java
@@ -68,13 +68,13 @@
 	        }
 	    });
 	    for (int i = 0; i < 4; i++) {
-	        TreeItem itemI = new TreeItem(tree, SWT.NULL);
+	        TreeItem itemI = new TreeItem(tree, SWT.NONE);
 	        itemI.setText("Item " + i);
 	        for (int j = 0; j < 4; j++) {
-	            TreeItem itemJ = new TreeItem(itemI, SWT.NULL);
+	            TreeItem itemJ = new TreeItem(itemI, SWT.NONE);
 	            itemJ.setText("Item " + i + " " + j);
 	            for (int k = 0; k < 4; k++) {
-	                TreeItem itemK = new TreeItem(itemJ, SWT.NULL);
+	                TreeItem itemK = new TreeItem(itemJ, SWT.NONE);
 	                itemK.setText("Item " + i + " " + j + " " + k);
 	            }
 	        }
diff --git a/examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet291.java b/examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet291.java
index fc6ba89..2290998 100644
--- a/examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet291.java
+++ b/examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet291.java
@@ -28,7 +28,7 @@
 		shell.setLayout(new FillLayout());
 		final Tree tree = new Tree(shell, SWT.BORDER);
 		for (int i = 0; i < 5; i++) {
-			TreeItem treeItem = new TreeItem (tree, SWT.NULL);
+			TreeItem treeItem = new TreeItem (tree, SWT.NONE);
 			treeItem.setText ("item" + i);
 			for (int j = 0; j < 3; j++) {
 				TreeItem subItem = new TreeItem(treeItem, SWT.NONE);
diff --git a/examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet292.java b/examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet292.java
index d881cfd..9aa1b8c 100644
--- a/examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet292.java
+++ b/examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet292.java
@@ -29,7 +29,7 @@
 		final Shell shell = new Shell(display);
 		final Tree tree = new Tree(shell, SWT.BORDER);
 		for (int i = 0; i < 5; i++) {
-			TreeItem treeItem = new TreeItem (tree, SWT.NULL);
+			TreeItem treeItem = new TreeItem (tree, SWT.NONE);
 			treeItem.setText ("TreeItem " + i);
 			for (int j = 0; j < 3; j++) {
 				TreeItem subItem = new TreeItem(treeItem, SWT.NONE);