--- a/dia/tool_layer.d	Wed Jul 15 23:49:02 2009 +0930
+++ b/dia/tool_layer.d	Thu Jul 16 00:12:02 2009 +0930
@@ -15,7 +15,7 @@
         mTools = tools.dup;
     }
 
-    override bool handle_button_press(Viewport viewport, in ButtonEvent event) {
+    override bool handle_button_press(scope Viewport viewport, in ButtonEvent event) {
         // writefln("%s", event);
 
         if (mGrabbedTool is null) {
@@ -34,7 +34,7 @@
         return true;
     }
 
-    override bool handle_button_release(Viewport viewport, in ButtonEvent event) {
+    override bool handle_button_release(scope Viewport viewport, in ButtonEvent event) {
         // writefln("%s", event);
 
         if (mGrabbedTool !is null) {
@@ -48,19 +48,19 @@
         return true;
     }
 
-    override bool handle_key_press(Viewport viewport, in KeyEvent event) {
+    override bool handle_key_press(scope Viewport viewport, in KeyEvent event) {
         // writefln("%s", event);
 
         return true;
     }
 
-    override bool handle_key_release(Viewport viewport, in KeyEvent event) {
+    override bool handle_key_release(scope Viewport viewport, in KeyEvent event) {
         // writefln("%s", event);
 
         return true;
     }
 
-    override bool handle_motion(Viewport viewport, in MotionEvent event) {
+    override bool handle_motion(scope Viewport viewport, in MotionEvent event) {
         //writefln("%s", event);
 
         if (mGrabbedTool is null) {
@@ -77,7 +77,7 @@
         return true;
     }
 
-    override bool handle_scroll(Viewport viewport, in ScrollEvent event) {
+    override bool handle_scroll(scope Viewport viewport, in ScrollEvent event) {
         // writefln("%s", event);
 
         if (mGrabbedTool is null) {