ccs.hWindowMenu = (HMENU) parent->GetWindowMenu()->GetHMenu();
ccs.idFirstChild = wxFIRST_MDI_CHILD;
- DWORD msStyle = /* MDIS_ALLCHILDSTYLES | */ WS_VISIBLE | WS_CHILD | WS_CLIPCHILDREN;
+ DWORD msStyle = MDIS_ALLCHILDSTYLES | WS_VISIBLE | WS_CHILD |
+ WS_CLIPCHILDREN | WS_CLIPSIBLINGS;
+
if ( style & wxHSCROLL )
msStyle |= WS_HSCROLL;
if ( style & wxVSCROLL )