How can i change the border?

[dkaip]

Hello. I make a simle window with wxwidgets. How can i change the border?
Also how can i call the destroy fuction(OnClose) with the right arrow button press?

#include <wx/wx.h>

class _Frame: public wxFrame
{
    public:
        _Frame(wxFrame *frame, const wxString& title);
    private:
    void OnClose(wxCloseEvent& event);
        DECLARE_EVENT_TABLE()
};

BEGIN_EVENT_TABLE(_Frame, wxFrame)
END_EVENT_TABLE()

_Frame::_Frame(wxFrame *frame, const wxString& title)
    : wxFrame(frame, -1, title)
{}

void _Frame::OnClose(wxCloseEvent &event)
{
    Destroy();
}

class _App : public wxApp
{
    public:
        virtual bool OnInit();
};

IMPLEMENT_APP(_App);

bool _App::OnInit()
{
    _Frame* frame = new _Frame(0L, _("wxWidgets Application Template"));
    frame->Show();

    return true;
}