--- a/dwt/widgets/Widget.d	Wed Feb 06 11:08:01 2008 +0100
+++ b/dwt/widgets/Widget.d	Wed Feb 06 12:09:44 2008 +0100
@@ -108,20 +108,32 @@
 
     /* Check and initialize the Common Controls DLL */
     static const int MAJOR = 5, MINOR = 80;
-    static this() {
-        static if (!OS.IsWinCE) {
-            if (OS.COMCTL32_VERSION < OS.VERSION (MAJOR, MINOR)) {
-                Stdout.formatln ("***WARNING: DWT requires comctl32.dll version {}.{} or greater", MAJOR, MINOR); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
-                Stdout.formatln ("***WARNING: Detected: {}.{}", OS.COMCTL32_MAJOR, OS.COMCTL32_MINOR); //$NON-NLS-1$ //$NON-NLS-2$
+
+    private static bool static_this_completed = false;
+    private static void static_this() {
+        if( static_this_completed ){
+            return;
+        }
+        synchronized {
+            if( static_this_completed ){
+                return;
             }
+            static if (!OS.IsWinCE) {
+                if (OS.COMCTL32_VERSION < OS.VERSION (MAJOR, MINOR)) {
+                    Stdout.formatln ("***WARNING: DWT requires comctl32.dll version {}.{} or greater", MAJOR, MINOR); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
+                    Stdout.formatln ("***WARNING: Detected: {}.{}", OS.COMCTL32_MAJOR, OS.COMCTL32_MINOR); //$NON-NLS-1$ //$NON-NLS-2$
+                }
+            }
+            OS.InitCommonControls ();
+            static_this_completed = true;
         }
-        OS.InitCommonControls ();
     }
 
 /**
  * Prevents uninitialized instances from being created outside the package.
  */
 this () {
+    static_this();
 }
 
 /**
@@ -154,6 +166,7 @@
  * @see #getStyle
  */
 public this (Widget parent, int style) {
+    static_this();
     checkSubclass ();
     checkParent (parent);
     this.style = style;