[PATCH v2 1/2] win32u: Add a test for cross-process WM_GETDLGCODE with a NULL lparam.

[Tim Clem]

From: Tim Clem

Co-authored-by: Jacek Caban 
---
 dlls/win32u/tests/win32u.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/dlls/win32u/tests/win32u.c b/dlls/win32u/tests/win32u.c
index 25358c5d0d8..efc7249eca7 100644
--- a/dlls/win32u/tests/win32u.c
+++ b/dlls/win32u/tests/win32u.c
@@ -964,6 +964,9 @@ static LRESULT WINAPI test_ipc_message_proc( HWND hwnd, UINT msg, WPARAM wparam,
             ok( !wcscmp( mdi->szTitle, L"TestTitle" ), "szTitle = %s\n", wine_dbgstr_w( mdi->szTitle ));
             return 0xdeadbeef;
         }
+
+    case WM_GETDLGCODE:
+        return !lparam;
     }

return DefWindowProcW( hwnd, msg, wparam, lparam );
@@ -1059,6 +1062,10 @@ static void test_inter_process_child( HWND hwnd )
     res = NtUserMessageCall( hwnd, WM_GETTEXTLENGTH, 0, 0, NULL, NtUserSendMessage, TRUE );
     ok( res == 4, "res = %d\n", res );

+    res = NtUserMessageCall( hwnd, WM_GETDLGCODE, 0, 0, NULL, NtUserSendMessage, TRUE );
+    todo_wine
+    ok( res == 1, "res = %d\n", res );
+
     mdi.szClass = "TestClass";
     mdi.szTitle = "TestTitle";
     mdi.hOwner = 0;