Динамическое обновление элемента радио wxWidgets

Я пытаюсь динамически изменить состояние группы радиоэлементов, и я не мог понять, как это сделать. Я приложил свой код и файл CMakeLists.txt ниже. Когда вызывается метод Test, я ожидаю, что пункт 3 радио будет проверен, но пункт 1 радио остается проверенным. Может кто-нибудь показать мне, где я делаю неправильно?

Спасибо.

#CMakeLists.txt:
cmake_minimum_required(VERSION 2.8)
project(menu_radio_item)
find_package(wxWidgets REQUIRED core)
if(wxWidgets_FOUND)
include(${wxWidgets_USE_FILE})
add_executable(radio_item main.cpp)
target_link_libraries(radio_item ${wxWidgets_LIBRARIES})
endif(wxWidgets_FOUND)

Код:

#include <wx/wx.h>

// Application class declaration
class MyApp : public wxApp {
public:
virtual bool OnInit();
};
DECLARE_APP(MyApp)

// Frame class declaration
#define wxID_RADIO_ITEM_1 wxID_HIGHEST + 1
#define wxID_RADIO_ITEM_2 wxID_HIGHEST + 2
#define wxID_RADIO_ITEM_3 wxID_HIGHEST + 3
#define wxID_TEST         wxID_HIGHEST + 4

class MyFrame : public wxFrame {
public:
MyFrame(const wxString& title);
void OnQuit(wxCommandEvent& event);
void OnRadioItemPressed(wxCommandEvent& event);
void OnTest(wxCommandEvent& event);
void OnRadioItemUpdate(wxUpdateUIEvent& event);
private:
wxMenuBar *menubar;
wxMenu *file;
int item_controller;
DECLARE_EVENT_TABLE()
};

// Application class implementation
IMPLEMENT_APP(MyApp)
bool MyApp::OnInit() {
MyFrame *frame = new MyFrame(wxT("Simple Menu and Toolbar"));
frame->Show();
return true;
}

// Frame class definition
BEGIN_EVENT_TABLE(MyFrame, wxFrame)
EVT_MENU(wxID_EXIT, MyFrame::OnQuit)
EVT_MENU(wxID_RADIO_ITEM_1, MyFrame::OnRadioItemPressed)
EVT_MENU(wxID_RADIO_ITEM_2, MyFrame::OnRadioItemPressed)
EVT_MENU(wxID_RADIO_ITEM_3, MyFrame::OnRadioItemPressed)
EVT_MENU(wxID_TEST, MyFrame::OnTest)
EVT_UPDATE_UI(wxID_RADIO_ITEM_1, MyFrame::OnRadioItemUpdate)
EVT_UPDATE_UI(wxID_RADIO_ITEM_2, MyFrame::OnRadioItemUpdate)
EVT_UPDATE_UI(wxID_RADIO_ITEM_3, MyFrame::OnRadioItemUpdate)
END_EVENT_TABLE()

MyFrame::MyFrame(const wxString& title) :
wxFrame(NULL, wxID_ANY, title, wxDefaultPosition, wxSize(280, 180)),
item_controller(1) {
menubar = new wxMenuBar;
file = new wxMenu;
file->Append(wxID_EXIT, wxT("&Quit"));
file->AppendSeparator();
file->AppendRadioItem(wxID_RADIO_ITEM_1, wxT("One"));
file->AppendRadioItem(wxID_RADIO_ITEM_2, wxT("Two"));
file->AppendRadioItem(wxID_RADIO_ITEM_3, wxT("Tree"));
file->AppendSeparator();
file->Append(wxID_TEST, wxT("Test"));
menubar->Append(file, wxT("&File"));
SetMenuBar(menubar);
Centre();
}

void MyFrame::OnQuit(wxCommandEvent& event) {
Close(true);
}

void MyFrame::OnRadioItemPressed(wxCommandEvent& event) {
if(event.GetId() == wxID_RADIO_ITEM_1) {
std::cout << "Item 1 is pressed" << std::endl;
}
else if(event.GetId() == wxID_RADIO_ITEM_2) {
std::cout << "Item 2 is pressed" << std::endl;
}
else if(event.GetId() == wxID_RADIO_ITEM_3) {
std::cout << "Item 3 is pressed" << std::endl;
}
else {
std::cout << "No match!" << std::endl;
}
}

void MyFrame::OnRadioItemUpdate(wxUpdateUIEvent& event) {
std::cout << "OnRadioItemUpdate" << std::endl;
wxMenuItem* item;
switch(item_controller) {
case 1:
item = GetMenuBar()->FindItem(wxID_RADIO_ITEM_1);
item->Check(true);
break;
case 2:
item = GetMenuBar()->FindItem(wxID_RADIO_ITEM_2);
item->Check(true);
break;
case 3:
item = GetMenuBar()->FindItem(wxID_RADIO_ITEM_3);
item->Check(true);
break;
}
/*
std::cout << "OnRadioItemUpdate" << std::endl;
switch(event.GetId()) {
case wxID_RADIO_ITEM_1:
event.Check(item_controller == 1);
break;
case wxID_RADIO_ITEM_2:
event.Check(item_controller == 2);
break;
case wxID_RADIO_ITEM_3:
event.Check(item_controller == 3);
break;
}
*/
}void MyFrame::OnTest(wxCommandEvent& event) {
item_controller = 3;
UpdateWindowUI();
}