diff --git a/reactos/win32ss/user/ntuser/callback.c b/reactos/win32ss/user/ntuser/callback.c
index a6112e87e1e..74fb27171f6 100644
--- a/reactos/win32ss/user/ntuser/callback.c
+++ b/reactos/win32ss/user/ntuser/callback.c
@@ -374,6 +374,8 @@ co_IntCallWindowProc(WNDPROC Proc,
           case WM_NCCREATE:
           case WM_STYLECHANGING:
           case WM_WINDOWPOSCHANGING:
+          case WM_SIZING:
+          case WM_MOVING:
             TRACE("Copy lParam, Message %d Size %d lParam %d!\n", Message, lParamBufferSize, lParam);
             if (InSendMessage)
                // Copy into kernel space.
diff --git a/reactos/win32ss/user/ntuser/message.c b/reactos/win32ss/user/ntuser/message.c
index 50deea3e44c..a9e2256d3eb 100644
--- a/reactos/win32ss/user/ntuser/message.c
+++ b/reactos/win32ss/user/ntuser/message.c
@@ -136,6 +136,8 @@ static MSGMEMORY g_MsgMemory[] =
     { WM_COPYGLOBALDATA, MMS_SIZE_WPARAM, MMS_FLAG_READ },
     { WM_WINDOWPOSCHANGED, sizeof(WINDOWPOS), MMS_FLAG_READWRITE },
     { WM_WINDOWPOSCHANGING, sizeof(WINDOWPOS), MMS_FLAG_READWRITE },
+    { WM_SIZING, sizeof(RECT), MMS_FLAG_READWRITE },
+    { WM_MOVING, sizeof(RECT), MMS_FLAG_READWRITE },
 };
 
 static PMSGMEMORY FASTCALL
diff --git a/reactos/win32ss/user/user32/windows/message.c b/reactos/win32ss/user/user32/windows/message.c
index afd066e1eff..f3a729155cb 100644
--- a/reactos/win32ss/user/user32/windows/message.c
+++ b/reactos/win32ss/user/user32/windows/message.c
@@ -2930,6 +2930,17 @@ User32CallWindowProcFromKernel(PVOID Arguments, ULONG ArgumentLength)
           return STATUS_INFO_LENGTH_MISMATCH;
         }
       KMMsg.lParam = (LPARAM) ((char *) CallbackArgs + sizeof(WINDOWPROC_CALLBACK_ARGUMENTS));
+     switch(KMMsg.message)
+     {
+        case WM_SIZING:
+        {
+           PRECT prect = (PRECT) KMMsg.lParam;
+           ERR("WM_SIZING 1 t %d l %d r %d b %d\n",prect->top,prect->left,prect->right,prect->bottom);
+           break;
+        }
+        default:
+           break;
+     }
     }
   else
     {
@@ -2965,6 +2976,20 @@ User32CallWindowProcFromKernel(PVOID Arguments, ULONG ArgumentLength)
     {
     }
 
+  if (0 <= CallbackArgs->lParamBufferSize)
+  {
+     switch(KMMsg.message)
+     {
+        case WM_SIZING:
+        {
+           PRECT prect = (PRECT) KMMsg.lParam;
+           ERR("WM_SIZING 2 t %d l %d r %d b %d\n",prect->top,prect->left,prect->right,prect->bottom);
+           break;
+        }
+        default:
+           break;
+     }
+  }
   return ZwCallbackReturn(CallbackArgs, ArgumentLength, STATUS_SUCCESS);
 }