wxMDIParentFrame *mdiParent = wxDynamicCast(m_parent, wxMDIParentFrame);
if ( !mdiParent )
- wxLogError(wxT("Parent is not of type wxMDIParentFrame."));
+ {
+ wxLogError(wxT("Parent of wxMDIParentFrame must be wxMDIParentFrame."));
+ return NULL;
+ }
XRC_MAKE_INSTANCE(frame, wxMDIChildFrame);