X-Git-Url: https://git.reactos.org/?p=reactos.git;a=blobdiff_plain;f=win32ss%2Fuser%2Fntuser%2Fdefwnd.c;h=fc55c4acfba8c60fc1a9d27c7a7695433f957453;hp=67215d1f26dfd8c491c9de037c9bcd1699b2378e;hb=37af78775ddb371501fbcfb74c766a7d68f5470a;hpb=d893a6c3558994406c786d72b26f0c4f4a33f071

diff --git a/win32ss/user/ntuser/defwnd.c b/win32ss/user/ntuser/defwnd.c
index 67215d1f26d..fc55c4acfba 100644
--- a/win32ss/user/ntuser/defwnd.c
+++ b/win32ss/user/ntuser/defwnd.c
@@ -787,6 +787,11 @@ IntDefWindowProc(
             PWND topWnd = UserGetWindowObject(hwndTop);
             if (topWnd)
             {
+               if ((topWnd->style & WS_THICKFRAME) == 0)
+               {
+                  return 0;
+               }
+               
                if (wParam == VK_DOWN)
                {
                    if (topWnd->style & WS_MAXIMIZE)