wxWidget c++ abrir nova janela quando butão for clicado

Programação
#1

Pessoal, sou iniciante nessa GUI, estou querendo saber como posso abrir uma nova janela quando um evento de clique de mouse é realizado. Segue o meu código:

#include <wx/wx.h>
#include <wx/grid.h>
#include
#include
#include
#include
#include

using namespace std;
using std::string;

class Simple : public wxFrame
{
wxPanel* painel;

wxStaticText *titulo;
wxButton *btn1;
wxButton *btn2;
wxButton *btn3;



public:
	Simple(const wxString& title)
		: wxFrame(NULL, wxID_ANY, title, wxDefaultPosition, wxSize(400,400))
	{	
		painel = new wxPanel(this, wxID_ANY);
		

		void botao1(wxCommandEvent& event);
		void botao2(wxCommandEvent& event);
		void botao3(wxCommandEvent& event);	

		titulo = new wxStaticText(painel, wxID_ANY,wxT("Escolha o botao"),wxPoint(140,150));
		
		btn1 = new wxButton (painel, wxID_EXIT, wxT("1"),wxPoint(80,200),wxSize(80,80));
		btn1->Connect(wxEVT_BUTTON,wxCommandEventHandler(Simple::botao1),NULL,this);
		
		btn2 = new wxButton (painel, wxID_EXIT, wxT("2"),wxPoint(160,200),wxSize(80,80));
		btn2->Connect(wxEVT_BUTTON,wxCommandEventHandler(Simple::botao2),NULL,this);

		btn3 = new wxButton (painel, wxID_EXIT, wxT("3"),wxPoint(240,200),wxSize(80,80));
		btn3->Connect(wxEVT_BUTTON,wxCommandEventHandler(Simple::botao3),NULL,this);


		Centre();

	}

public:
	void botao1(wxCommandEvent& event)
{
	cout << "cliquei no botao1"<< endl;

} 

public:
	void botao2(wxCommandEvent& event)
{  
	
	cout << " cliquei no botao2" << endl;
}

public:
	void botao3(wxCommandEvent& event)
{ 
	cout << "cliquei no botao3" << endl;
}

};

class MyApp : public wxApp
{
public:
bool OnInit()
{
Simple *simple = new Simple(wxT(“sim”));
simple->Show(true);
return true;
}
};

wxIMPLEMENT_APP(MyApp);