diff --git a/Source/JavaScriptCore/wtf/mg/MainThreadMg.cpp b/Source/JavaScriptCore/wtf/mg/MainThreadMg.cpp
index 4da6344..4df06f4 100644
--- a/Source/JavaScriptCore/wtf/mg/MainThreadMg.cpp
+++ b/Source/JavaScriptCore/wtf/mg/MainThreadMg.cpp
@@ -43,7 +43,7 @@ void initializeMainThreadPlatform()
 {
     if (!isInitialized) {
         oldDefWndProc = __mg_def_proc[0];
-        __mg_def_proc[0] = ThreadingWindowWndProc;
+        __mg_def_proc[0] = (WNDPROC)ThreadingWindowWndProc;
         isInitialized = TRUE;
     }
 }
diff --git a/Source/WebCore/platform/Cursor.h b/Source/WebCore/platform/Cursor.h
index 10dccf4..560d6eb 100644
--- a/Source/WebCore/platform/Cursor.h
+++ b/Source/WebCore/platform/Cursor.h
@@ -46,7 +46,7 @@ typedef HICON HCURSOR;
 #elif PLATFORM(HAIKU)
 #include <app/Cursor.h>
 #elif PLATFORM(MG)
-typedef unsigned int HCURSOR;
+typedef void * HCURSOR;
 #endif
 
 #if PLATFORM(MAC)
diff --git a/Source/WebCore/platform/PlatformKeyboardEvent.h b/Source/WebCore/platform/PlatformKeyboardEvent.h
index 5b7336d..bfe03b4 100644
--- a/Source/WebCore/platform/PlatformKeyboardEvent.h
+++ b/Source/WebCore/platform/PlatformKeyboardEvent.h
@@ -74,8 +74,8 @@ typedef unsigned long int uint32;
 #endif
 
 #if PLATFORM(MG)
-typedef unsigned int HWND;
-typedef unsigned int WPARAM;
+typedef void *HWND;
+typedef unsigned long WPARAM;
 typedef unsigned long LPARAM;
 #endif
 
diff --git a/Source/WebCore/platform/PlatformMouseEvent.h b/Source/WebCore/platform/PlatformMouseEvent.h
index 4bd88c5..2aea794 100644
--- a/Source/WebCore/platform/PlatformMouseEvent.h
+++ b/Source/WebCore/platform/PlatformMouseEvent.h
@@ -68,8 +68,8 @@ typedef unsigned long int uint32;
 #endif
 
 #if PLATFORM(MG)
-typedef unsigned int HWND;
-typedef unsigned int WPARAM;
+typedef void *HWND;
+typedef unsigned long WPARAM;
 typedef unsigned long LPARAM;
 #endif
 
diff --git a/Source/WebCore/platform/PlatformWheelEvent.h b/Source/WebCore/platform/PlatformWheelEvent.h
index 9fc29aa..0bdfe5b 100644
--- a/Source/WebCore/platform/PlatformWheelEvent.h
+++ b/Source/WebCore/platform/PlatformWheelEvent.h
@@ -59,8 +59,8 @@ class BMessage;
 #endif
 
 #if PLATFORM(MG)
-typedef unsigned int HWND;
-typedef unsigned int WPARAM;
+typedef void *HWND;
+typedef unsigned long WPARAM;
 typedef unsigned long LPARAM;
 #endif
 
diff --git a/Source/WebCore/platform/Widget.h b/Source/WebCore/platform/Widget.h
index f1c9962..843a77b 100644
--- a/Source/WebCore/platform/Widget.h
+++ b/Source/WebCore/platform/Widget.h
@@ -74,7 +74,7 @@ typedef QWidget* PlatformWidget;
 #endif
 
 #if PLATFORM(MG)
-typedef unsigned int HWND;
+typedef void *HWND;
 typedef HWND PlatformWidget;
 typedef PlatformWidget PlatformPageClient;
 #endif
@@ -85,7 +85,7 @@ typedef wxWindow* PlatformWidget;
 #endif
 
 #if PLATFORM(MG)
-typedef unsigned int HWND;
+typedef void *HWND;
 typedef HWND PlatformWidget;
 typedef PlatformWidget PlatformPageClient;
 #endif
diff --git a/Source/WebCore/platform/graphics/GraphicsContext.h b/Source/WebCore/platform/graphics/GraphicsContext.h
index eb42a06..7773fac 100644
--- a/Source/WebCore/platform/graphics/GraphicsContext.h
+++ b/Source/WebCore/platform/graphics/GraphicsContext.h
@@ -87,7 +87,7 @@ struct pattern;
 #elif OS(WINCE)
 typedef struct HDC__ PlatformGraphicsContext;
 #elif PLATFORM(MG) 
-typedef unsigned int HDC;
+typedef void *HDC;
 typedef HDC PlatformGraphicsContext;
 
 #if ENABLE(CAIRO_MG)
diff --git a/Source/WebCore/platform/graphics/Icon.h b/Source/WebCore/platform/graphics/Icon.h
index 9118ea9..70b911c 100644
--- a/Source/WebCore/platform/graphics/Icon.h
+++ b/Source/WebCore/platform/graphics/Icon.h
@@ -45,7 +45,7 @@ typedef struct _Evas_Object Evas_Object;
 #include "Image.h"
 #include "PlatformIcon.h"
 #elif PLATFORM(MG)
-typedef unsigned int HICON;
+typedef void *HICON;
 #endif
 
 namespace WebCore {
diff --git a/Source/WebCore/platform/mg/PopupMenuMg.cpp b/Source/WebCore/platform/mg/PopupMenuMg.cpp
index 67b5a10..ef6602b 100644
--- a/Source/WebCore/platform/mg/PopupMenuMg.cpp
+++ b/Source/WebCore/platform/mg/PopupMenuMg.cpp
@@ -630,7 +630,7 @@ void PopupMenuMg::disconnectClient()
 }
 
 
-static int PopupCtrlProc(HWND hwnd, int message, WPARAM wParam, LPARAM lParam)
+static long PopupCtrlProc(HWND hwnd, unsigned int message, WPARAM wParam, LPARAM lParam)
 {
 	PopupMenuMg * popup;
 
@@ -871,7 +871,6 @@ bool RegisterPopmenu(void)
     MenuClass.hCursor = GetSystemCursor (IDC_ARROW);
     MenuClass.iBkColor = COLOR_lightwhite;
     MenuClass.WinProc = PopupCtrlProc;
-
     return RegisterWindowClass (&MenuClass);
 }
 
diff --git a/Source/WebCore/platform/mg/PopupMenuMg.h b/Source/WebCore/platform/mg/PopupMenuMg.h
index a5d383d..5c71429 100644
--- a/Source/WebCore/platform/mg/PopupMenuMg.h
+++ b/Source/WebCore/platform/mg/PopupMenuMg.h
@@ -31,8 +31,8 @@
 #include "Scrollbar.h"
 #include <wtf/RefPtr.h>
 
-typedef unsigned int HWND;
-typedef unsigned int  HDC;
+typedef void * HWND;
+typedef void *  HDC;
 
 namespace WebCore {
 
diff --git a/Source/WebCore/platform/mg/ScrollbarThemeMg.cpp b/Source/WebCore/platform/mg/ScrollbarThemeMg.cpp
index 4438db7..9757319 100644
--- a/Source/WebCore/platform/mg/ScrollbarThemeMg.cpp
+++ b/Source/WebCore/platform/mg/ScrollbarThemeMg.cpp
@@ -106,13 +106,13 @@ static void paintScrollTrack (SCROLLPART part, HDC hdc, const IntRect &rect, boo
     {
         case HScrollTrackPart:
             {
-                SetBrushColor (hdc, DWORD2PIXEL(hdc, GetWindowElementAttr(HWND_DESKTOP, WE_MAINC_THREED_BODY)));
+                SetBrushColor (hdc, DWORD2Pixel(hdc, GetWindowElementAttr(HWND_DESKTOP, WE_MAINC_THREED_BODY)));
                 FillBox (hdc, rect.x(), rect.y(), rect.width(), rect.height());
             }
             break;
         case VScrollTrackPart:
             {
-                SetBrushColor (hdc, DWORD2PIXEL(hdc, GetWindowElementAttr(HWND_DESKTOP, WE_MAINC_THREED_BODY)));
+                SetBrushColor (hdc, DWORD2Pixel(hdc, GetWindowElementAttr(HWND_DESKTOP, WE_MAINC_THREED_BODY)));
                 FillBox (hdc, rect.x(), rect.y(), rect.width(), rect.height());
             }
             break;
diff --git a/Source/WebCore/platform/mg/SharedTimerMg.cpp b/Source/WebCore/platform/mg/SharedTimerMg.cpp
index 34fe502..ebf8ac2 100644
--- a/Source/WebCore/platform/mg/SharedTimerMg.cpp
+++ b/Source/WebCore/platform/mg/SharedTimerMg.cpp
@@ -68,7 +68,7 @@ void setSharedTimerFireTime(double fireTime)
     }
 
     //printf("wwwwwwwwwwwwwwwwwwwwwwwwwwwwwww  %d\n", intervalInMS);
-    if (SetTimerEx(HWND_NULL, t_id, intervalInMS, timerFired)){
+    if (SetTimerEx(HWND_NULL, t_id, intervalInMS, (TIMERPROC)timerFired)){
         timerID = t_id;
         t_id++;
     }else
diff --git a/Source/WebKit/mg/control/MDWebView.cpp b/Source/WebKit/mg/control/MDWebView.cpp
index 6db354c..ebb7dab 100644
--- a/Source/WebKit/mg/control/MDWebView.cpp
+++ b/Source/WebKit/mg/control/MDWebView.cpp
@@ -1850,7 +1850,7 @@ void MDWebView::dealWithMDMessages(HWND hwnd, WPARAM wParam, LPARAM lParam)
     }
 }
 
-int MDWebView::WebViewWndProc(HWND hwnd, int message, WPARAM wParam, LPARAM lParam)
+long MDWebView::WebViewWndProc(HWND hwnd, unsigned int message, WPARAM wParam, LPARAM lParam)
 {
     MDWebView* view = reinterpret_cast<MDWebView*>(GetWindowAdditionalData2(hwnd));
     switch (message){
diff --git a/Source/WebKit/mg/control/MDWebView.h b/Source/WebKit/mg/control/MDWebView.h
index 6ae0ce8..07a9628 100644
--- a/Source/WebKit/mg/control/MDWebView.h
+++ b/Source/WebKit/mg/control/MDWebView.h
@@ -45,7 +45,7 @@ public:
     static bool registerWebViewWindowClass();
     static bool unregisterWebViewWindowClass();
     static bool m_haveRegisteredWindowClass;
-    static int WebViewWndProc(HWND hwnd, int message, WPARAM wParam, LPARAM lParam);
+    static long WebViewWndProc(HWND hwnd, unsigned int message, WPARAM wParam, LPARAM lParam);
     void init(HWND hwnd);
     virtual HWND viewWindow();
     //END_MDWEBVIEW_INITWINDOW