[USER32]

- Implement RealUserDrawCaption and pass it to uxtheme in order to paint the classic caption when needed. 
CORE-9016

svn path=/trunk/; revision=66722

reactos/win32ss/user/user32/misc/usrapihk.c

@@ -28,6 +28,7 @@ INT WINAPI RealSetScrollInfo(HWND,int,LPCSCROLLINFO,BOOL);
 BOOL WINAPI RealSystemParametersInfoA(UINT,UINT,PVOID,UINT);
 BOOL WINAPI RealSystemParametersInfoW(UINT,UINT,PVOID,UINT);
 DWORD WINAPI GetRealWindowOwner(HWND);
+LRESULT WINAPI RealUserDrawCaption(HWND hWnd, HDC hDC, LPCRECT lpRc, UINT uFlags);
 
 /* GLOBALS *******************************************************************/
 
@@ -154,7 +155,7 @@ ResetUserApiHook(PUSERAPIHOOK puah)
   puah->SystemParametersInfoW = (FARPROC)RealSystemParametersInfoW;
   puah->ForceResetUserApiHook = (FARPROC)ForceResetUserApiHook;
   puah->DrawFrameControl = (FARPROC)RealDrawFrameControl;
-  puah->DrawCaption = (FARPROC)NtUserDrawCaption;
+  puah->DrawCaption = (FARPROC)RealUserDrawCaption;
   puah->MDIRedrawFrame = (FARPROC)RealMDIRedrawFrame;
   puah->GetRealWindowOwner = (FARPROC)GetRealWindowOwner;
 }

reactos/win32ss/user/user32/windows/defwnd.c

@@ -398,6 +398,16 @@ UserSendUiUpdateMsg(HWND hwnd, LPARAM lParam)
     return TRUE;
 }
 
+/*
+ RealUserDrawCaption: This function is passed through RegisterUserApiHook to uxtheme
+                      to call it when the classic caption is needed to be drawn.
+ */
+LRESULT WINAPI
+RealUserDrawCaption(HWND hWnd, HDC hDC, LPCRECT lpRc, UINT uFlags)
+{
+    return DefWndNCPaint(hWnd, HRGN_WINDOW, -1);
+}
+
 static void
 UserPaintCaption(HWND hwnd)
 {
@@ -411,6 +421,11 @@ UserPaintCaption(HWND hwnd)
      */
     if(gpsi->dwSRVIFlags & SRVINFO_APIHOOK)
     {
+        /* 
+         * This will cause uxtheme to either paint the themed caption or call
+         * RealUserDrawCaption in order to draw the classic caption when themes
+         * are disabled but the themes service is enabled
+         */
         SendMessage(hwnd, WM_NCUAHDRAWCAPTION,0,0);
     }
     else