--- a/dwt/internal/cocoa/OS.d	Sun Dec 28 19:47:54 2008 +0100
+++ b/dwt/internal/cocoa/OS.d	Sun Dec 28 20:07:20 2008 +0100
@@ -2836,7 +2836,7 @@
 public static const int NSColorRenderingIntentRelativeColorimetric = 2;
 public static const int NSColorRenderingIntentSaturation = 4;
 public static const Cocoa.NSUInteger NSCommandKeyMask = 1048576;
-public static const int NSCompositeClear = 0;
+alias Cocoa.NSCompositingOperation.NSCompositeClear NSCompositeClear;
 public static const int NSCompositeCopy = 1;
 public static const int NSCompositeDestinationAtop = 9;
 public static const int NSCompositeDestinationIn = 7;

--- a/dwt/widgets/Tracker.d	Sun Dec 28 19:47:54 2008 +0100
+++ b/dwt/widgets/Tracker.d	Sun Dec 28 20:07:20 2008 +0100
@@ -7,6 +7,9 @@
  *
  * Contributors:
  *     IBM Corporation - initial API and implementation
+ *     
+ * Port to the D programming language:
+ *     Jacob Carlborg <doob@me.com>
  *******************************************************************************/
 module dwt.widgets.Tracker;
 
@@ -34,6 +37,15 @@
 import dwt.internal.cocoa.NSWindow;
 import dwt.internal.cocoa.OS;
 
+import dwt.internal.c.Carbon;
+import dwt.internal.objc.cocoa.Cocoa;
+import dwt.widgets.Composite;
+import dwt.widgets.Control;
+import dwt.widgets.Display;
+import dwt.widgets.Event;
+import dwt.widgets.TypedListener;
+import dwt.widgets.Widget;
+
 /**
  *  Instances of this class implement rubber banding rectangles that are
  *  drawn onto a parent <code>Composite</code> or <code>Display</code>.
@@ -60,7 +72,8 @@
     Control parent;
     bool tracking, cancelled, stippled;
     Cursor clientCursor, resizeCursor;
-    Rectangle [] rectangles = new Rectangle [0], proportions = rectangles;
+    Rectangle [] rectangles;
+    Rectangle [] proportions;
     Rectangle bounds;
     int cursorOrientation = DWT.NONE;
     bool inEvent = false;
@@ -70,8 +83,14 @@
     /*
     * The following values mirror step sizes on Windows
     */
-    final static int STEPSIZE_SMALL = 1;
-    final static int STEPSIZE_LARGE = 9;
+    const static int STEPSIZE_SMALL = 1;
+    const static int STEPSIZE_LARGE = 9;
+    
+    static this ()
+    {
+        rectangles = new Rectangle [0];
+        proportions = rectangles;
+    }
 
 /**
  * Constructs a new instance of this class given its parent
@@ -387,12 +406,12 @@
         frame.width = rect.width;
         frame.height = rect.height;
         if (erase) {
-            frame.width++;
-            frame.height++;
+            frame.size.width++;
+            frame.size.height++;
             NSBezierPath.fillRect(frame);
         } else {
-            frame.x += 0.5f;
-            frame.y += 0.5f;
+            frame.origin.x += 0.5f;
+            frame.origin.y += 0.5f;
             NSBezierPath.strokeRect(frame);
         }
     }
@@ -548,18 +567,19 @@
         }
         oldX = newX;  oldY = newY;
     }
-    switch ((int)/*64*/nsEvent.type()) {
+    switch (cast(int)/*64*/nsEvent.type()) {
         case OS.NSLeftMouseUp:
         case OS.NSRightMouseUp:
         case OS.NSOtherMouseUp:
             tracking = false;
+        default:
     }
 }
 
 void key (NSEvent nsEvent) {
     //TODO send event
 //  if (!sendKeyEvent (DWT.KeyDown, theEvent)) return OS.noErr;
-    int /*long*/ modifierFlags = nsEvent.modifierFlags();
+    NSUInteger modifierFlags = nsEvent.modifierFlags();
     int stepSize = (modifierFlags & OS.NSControlKeyMask) !is 0 ? STEPSIZE_SMALL : STEPSIZE_LARGE;
     int xChange = 0, yChange = 0;
     switch (nsEvent.keyCode()) {
@@ -583,6 +603,7 @@
         case 125: /* Down arrow */
             yChange = stepSize;
             break;
+        default:
     }
     if (xChange !is 0 || yChange !is 0) {
         Rectangle [] oldRectangles = rectangles;
@@ -719,16 +740,16 @@
     checkWidget ();
     cancelled = false;
     tracking = true;
-    window = cast(NSWindow)new NSWindow().alloc();
+    window = cast(NSWindow)(new NSWindow()).alloc();
     NSArray screens = NSScreen.screens();
-    float /*double*/ minX = Float.MAX_VALUE, maxX = Float.MIN_VALUE;
-    float /*double*/ minY = Float.MAX_VALUE, maxY = Float.MIN_VALUE;    
-    int count = (int)/*64*/screens.count();
+    CGFloat minX = Float.MAX_VALUE, maxX = Float.MIN_VALUE;
+    CGFloat minY = Float.MAX_VALUE, maxY = Float.MIN_VALUE;    
+    int count = cast(int)/*64*/screens.count();
     for (int i = 0; i < count; i++) {
         NSScreen screen = new NSScreen(screens.objectAtIndex(i));
         NSRect frame = screen.frame();
-        float /*double*/ x1 = frame.x, x2 = frame.x + frame.width;
-        float /*double*/ y1 = frame.y, y2 = frame.y + frame.height;
+        CGFloat x1 = frame.x, x2 = frame.x + frame.width;
+        CGFloat y1 = frame.y, y2 = frame.y + frame.height;
         if (x1 < minX) minX = x1;
         if (x2 < minX) minX = x2;
         if (x1 > maxX) maxX = x1;
@@ -772,11 +793,12 @@
     bool down = false;
     NSApplication application = NSApplication.sharedApplication();
     NSEvent currentEvent = application.currentEvent();
-    switch ((int)/*64*/currentEvent.type()) {
+    switch (currentEvent.type()) {
         case OS.NSLeftMouseDown:
         case OS.NSRightMouseDown:
         case OS.NSOtherMouseDown:
             down = true;
+        default:
     }
     if (down) {
         cursorPos = display.getCursorLocation();
@@ -794,10 +816,10 @@
 
     /* Tracker behaves like a Dialog with its own OS event loop. */
     while (tracking && !cancelled) {
-        NSAutoreleasePool pool = cast(NSAutoreleasePool)new NSAutoreleasePool().alloc().init();
+        NSAutoreleasePool pool = cast(NSAutoreleasePool)(new NSAutoreleasePool()).alloc().init();
         NSEvent event = application.nextEventMatchingMask(0, NSDate.distantFuture(), OS.NSDefaultRunLoopMode, true);
         if (event is null) continue;
-        int type = (int)/*64*/event.type();
+        NSEventType type = event.type();
         switch (type) {
             case OS.NSLeftMouseUp:
             case OS.NSRightMouseUp:
@@ -813,6 +835,7 @@
             case OS.NSFlagsChanged:
                 key(event);
                 break;
+            default:
         }
         /*
         * Don't dispatch mouse and key events in general, EXCEPT once this
@@ -837,6 +860,7 @@
                 case OS.NSKeyUp:
                 case OS.NSFlagsChanged:
                     dispatch = false;
+                default:
             }
         }
         if (dispatch) application.sendEvent(event);
@@ -1077,9 +1101,9 @@
 public void setRectangles (Rectangle [] rectangles) {
     checkWidget ();
     if (rectangles is null) error (DWT.ERROR_NULL_ARGUMENT);
-    int length = rectangles.length;
-    this.rectangles = new Rectangle [length];
-    for (int i = 0; i < length; i++) {
+    size_t length_ = rectangles.length;
+    this.rectangles = new Rectangle [length_];
+    for (size_t i = 0; i < length_; i++) {
         Rectangle current = rectangles [i];
         if (current is null) error (DWT.ERROR_NULL_ARGUMENT);
         this.rectangles [i] = new Rectangle (current.x, current.y, current.width, current.height);