!CreateBase( parent, -1, wxDefaultPosition, wxDefaultSize, style, wxDefaultValidator, wxT("wxMDIClientWindow") ))
{
wxFAIL_MSG( wxT("wxMDIClientWindow creation failed") );
!CreateBase( parent, -1, wxDefaultPosition, wxDefaultSize, style, wxDefaultValidator, wxT("wxMDIClientWindow") ))
{
wxFAIL_MSG( wxT("wxMDIClientWindow creation failed") );