C++ MyFrame::Centre方法代码示例

bool MyApp::OnInit(void)
{
    if ( !wxApp::OnInit() )
        return false;

    wxInitAllImageHandlers();


    // init global objects
    // -------------------

    g_printData = new wxPrintData;

    // You could set an initial paper size here
#if 0
    g_printData->SetPaperId(wxPAPER_LETTER); // for Americans
    g_printData->SetPaperId(wxPAPER_A4);    // for everyone else
#endif

    g_pageSetupData = new wxPageSetupDialogData;

    // copy over initial paper size from print record
    (*g_pageSetupData) = *g_printData;

    // Set some initial page margins in mm.
    g_pageSetupData->SetMarginTopLeft(wxPoint(15, 15));
    g_pageSetupData->SetMarginBottomRight(wxPoint(15, 15));


    // init local GUI objects
    // ----------------------

#if 0
    wxImage image( wxT("test.jpg") );
    image.SetAlpha();
    int i,j;
    for (i = 0; i < image.GetWidth(); i++)
       for (j = 0; j < image.GetHeight(); j++)
          image.SetAlpha( i, j, 50 );
    m_bitmap = image;
#endif
    m_angle = 30;
    m_testFont.Create(10, wxFONTFAMILY_SWISS, wxFONTSTYLE_NORMAL, wxFONTWEIGHT_NORMAL);


    // Create the main frame window
    // ----------------------------

    MyFrame* frame = new MyFrame((wxFrame *) NULL, wxT("wxWidgets Printing Demo"),
                                 wxPoint(0, 0), wxSize(400, 400));

    frame->Centre(wxBOTH);
    frame->Show();

    return true;
}

//.........这里部分代码省略.........
    file_menu->Append(wxID_ANY,_T("&Entry dialogs"),entry_menu);

#endif // wxUSE_TEXTDLG || wxUSE_NUMBERDLG


#if wxUSE_FILEDLG

    wxMenu *filedlg_menu = new wxMenu;
    filedlg_menu->Append(DIALOGS_FILE_OPEN,  _T("&Open file\tCtrl-O"));
    filedlg_menu->Append(DIALOGS_FILE_OPEN2,  _T("&Second open file\tCtrl-2"));
    filedlg_menu->Append(DIALOGS_FILES_OPEN,  _T("Open &files\tCtrl-Q"));
    filedlg_menu->Append(DIALOGS_FILE_SAVE,  _T("Sa&ve file\tCtrl-S"));

#if USE_FILEDLG_GENERIC
    filedlg_menu->AppendSeparator();
    filedlg_menu->Append(DIALOGS_FILE_OPEN_GENERIC,  _T("&Open file (generic)"));
    filedlg_menu->Append(DIALOGS_FILES_OPEN_GENERIC,  _T("Open &files (generic)"));
    filedlg_menu->Append(DIALOGS_FILE_SAVE_GENERIC,  _T("Sa&ve file (generic)"));
#endif // USE_FILEDLG_GENERIC

    file_menu->Append(wxID_ANY,_T("&File operations"),filedlg_menu);

#endif // wxUSE_FILEDLG

#if wxUSE_DIRDLG
    wxMenu *dir_menu = new wxMenu;

    dir_menu->Append(DIALOGS_DIR_CHOOSE,  _T("&Choose a directory\tCtrl-D"));
    dir_menu->Append(DIALOGS_DIRNEW_CHOOSE,  _T("Choose a directory (with \"Ne&w\" button)\tShift-Ctrl-D"));
    file_menu->Append(wxID_ANY,_T("&Directory operations"),dir_menu);

#if USE_DIRDLG_GENERIC
    dir_menu->AppendSeparator();
    dir_menu->Append(DIALOGS_GENERIC_DIR_CHOOSE,  _T("&Choose a directory (generic)"));
#endif // USE_DIRDLG_GENERIC

#endif // wxUSE_DIRDLG


#if wxUSE_STARTUP_TIPS || wxUSE_PROGRESSDLG || wxUSE_BUSYINFO || wxUSE_LOG_DIALOG

    wxMenu *info_menu = new wxMenu;

#if wxUSE_STARTUP_TIPS
    info_menu->Append(DIALOGS_TIP,  _T("&Tip of the day\tCtrl-T"));
#endif // wxUSE_STARTUP_TIPS

#if wxUSE_PROGRESSDLG
    info_menu->Append(DIALOGS_PROGRESS, _T("Pro&gress dialog\tCtrl-G"));
#endif // wxUSE_PROGRESSDLG

#if wxUSE_BUSYINFO
    info_menu->Append(DIALOGS_BUSYINFO, _T("&Busy info dialog\tCtrl-B"));
#endif // wxUSE_BUSYINFO

#if wxUSE_LOG_DIALOG
    info_menu->Append(DIALOGS_LOG_DIALOG, _T("&Log dialog\tCtrl-L"));
#endif // wxUSE_LOG_DIALOG

    file_menu->Append(wxID_ANY,_T("&Informative dialogs"),info_menu);

#endif // wxUSE_STARTUP_TIPS || wxUSE_PROGRESSDLG || wxUSE_BUSYINFO || wxUSE_LOG_DIALOG


#if wxUSE_FINDREPLDLG
    wxMenu *find_menu = new wxMenu;
    find_menu->AppendCheckItem(DIALOGS_FIND, _T("&Find dialog\tCtrl-F"));
    find_menu->AppendCheckItem(DIALOGS_REPLACE, _T("Find and &replace dialog\tShift-Ctrl-F"));
    file_menu->Append(wxID_ANY,_T("&Searching"),find_menu);
#endif // wxUSE_FINDREPLDLG

#if USE_MODAL_PRESENTATION
    wxMenu *modal_menu = new wxMenu;
    modal_menu->Append(DIALOGS_MODAL, _T("Mo&dal dialog\tCtrl-W"));
    modal_menu->AppendCheckItem(DIALOGS_MODELESS, _T("Modeless &dialog\tCtrl-Z"));
    file_menu->Append(wxID_ANY,_T("&Modal/Modeless"),modal_menu);
#endif // USE_MODAL_PRESENTATION

    file_menu->Append(DIALOGS_PROPERTY_SHEET, _T("&Property Sheet Dialog\tCtrl-P"));
    file_menu->Append(DIALOGS_REQUEST, _T("&Request user attention\tCtrl-R"));

    file_menu->AppendSeparator();
    file_menu->Append(wxID_EXIT, _T("E&xit\tAlt-X"));

    wxMenuBar *menu_bar = new wxMenuBar;
    menu_bar->Append(file_menu, _T("&File"));
    frame->SetMenuBar(menu_bar);

    myCanvas = new MyCanvas(frame);
    myCanvas->SetBackgroundColour(*wxWHITE);

    frame->Centre(wxBOTH);

    // Show the frame
    frame->Show(true);

    SetTopWindow(frame);

    return true;
}