wxRichTextCtrl not working?

全局*.h作用域:

#include <wx/sizer.h>
#include <wx/window.h>
#include <wx/richtext/richtextctrl.h>

wxTextCtrl* daTextCtrl;
wxBoxSizer *sizer = new wxBoxSizer(wxHORIZONTAL);
wxFrame *frame2 = new wxFrame(NULL, -1, wxT("Dialog Title"), wxPoint(50, 50), wxSize(500, 500));
frame2->Show(true);
wxWindow *windo = new wxWindow(frame2, wxID_ANY, wxDefaultPosition, wxSize(500,500));
daTextCtrl = new wxRichTextCtrl(windo,
                    wxID_ANY,
                    _T("a"),
                    wxDefaultPosition,
                    wxSize(350,100),
                    wxVSCROLL);

windo->Show();

未定义的引用' wxRichTextCtrl::wxRichTextCtrl(wxWindow*， int，wxString, wxPoint, wxSize, long, wxValidatorconst&， wxString const&)'|