win32u: Move WM_NCACTIVATE implementation from user32.

dlls/user32/controls.h

@@ -123,7 +123,6 @@ extern void MENU_EndMenu(HWND) DECLSPEC_HIDDEN;
 extern HMENU MENU_GetSysMenu( HWND hWnd, HMENU hPopupMenu ) DECLSPEC_HIDDEN;
 
 /* nonclient area */
-extern LRESULT NC_HandleNCActivate( HWND hwnd, WPARAM wParam, LPARAM lParam ) DECLSPEC_HIDDEN;
 extern void NC_HandleNCCalcSize( HWND hwnd, WPARAM wParam, RECT *winRect ) DECLSPEC_HIDDEN;
 extern LRESULT NC_HandleNCHitTest( HWND hwnd, POINT pt ) DECLSPEC_HIDDEN;
 extern LRESULT NC_HandleNCLButtonDown( HWND hwnd, WPARAM wParam, LPARAM lParam ) DECLSPEC_HIDDEN;

dlls/user32/defwnd.c

@@ -253,9 +253,6 @@ static LRESULT DEFWND_DefWinProc( HWND hwnd, UINT msg, WPARAM wParam, LPARAM lPa
                         (short)LOWORD(lParam), (short)HIWORD(lParam), 0, hwnd, NULL );
         return 0;
 
-    case WM_NCACTIVATE:
-        return NC_HandleNCActivate( hwnd, wParam, lParam );
-
     case WM_PRINT:
         DEFWND_Print(hwnd, (HDC)wParam, lParam);
         return 0;

dlls/win32u/defwnd.c

@@ -1463,6 +1463,30 @@ static LRESULT handle_nc_paint( HWND hwnd , HRGN clip )
     return 0;
 }
 
+static LRESULT handle_nc_activate( HWND hwnd, WPARAM wparam, LPARAM lparam )
+{
+    /* Lotus Notes draws menu descriptions in the caption of its main
+     * window. When it wants to restore original "system" view, it just
+     * sends WM_NCACTIVATE message to itself. Any optimizations here in
+     * attempt to minimize redrawings lead to a not restored caption.
+     */
+    if (wparam) win_set_flags( hwnd, WIN_NCACTIVATED, 0 );
+    else win_set_flags( hwnd, 0, WIN_NCACTIVATED );
+
+    /* This isn't documented but is reproducible in at least XP SP2 and
+     * Outlook 2007 depends on it
+     */
+    if (lparam != -1)
+    {
+        nc_paint( hwnd, (HRGN)1 );
+
+        if (NtUserGetAncestor( hwnd, GA_PARENT ) == get_desktop_window())
+            NtUserPostMessage( get_desktop_window(), WM_PARENTNOTIFY, WM_NCACTIVATE, (LPARAM)hwnd );
+    }
+
+    return TRUE;
+}
+
 LRESULT default_window_proc( HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam, BOOL ansi )
 {
     LRESULT result = 0;
@@ -1493,6 +1517,9 @@ LRESULT default_window_proc( HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam,
     case WM_NCPAINT:
         return handle_nc_paint( hwnd, (HRGN)wparam );
 
+    case WM_NCACTIVATE:
+        return handle_nc_activate( hwnd, wparam, lparam );
+
     case WM_WINDOWPOSCHANGING:
         return handle_window_pos_changing( hwnd, (WINDOWPOS *)lparam );