我有一个带有两个自定义选项的菜单：选项A和选项B
我的目标是在单击菜单栏上的选项A时获得两个工具书选项，A1和A2
这是我的代码（主要取自wxWidgets repo中的最小样本）：

class MyApp : public wxApp
{
public:
    bool OnInit() override;
};

wxIMPLEMENT_APP(MyApp);

class MyFrame : public wxFrame
{
public:
    MyFrame();

private:
    void OnHello(wxCommandEvent& event);
    void OnExit(wxCommandEvent& event);
    void OnAbout(wxCommandEvent& event);
    void onOptionA(wxCommandEvent& event);

    wxPanel* panel = new wxPanel(this);
    wxToolbook* tabControl1 = new wxToolbook(panel, wxID_ANY, {10, 10}, {370, 250}, /*wxTBK_BUTTONBAR|*/wxTBK_HORZ_LAYOUT);

    wxNotebookPage* tabA1 = new wxNotebookPage(tabControl1, wxID_ANY);
    wxNotebookPage* tabA2 = new wxNotebookPage(tabControl1, wxID_ANY);
    wxDECLARE_EVENT_TABLE();
};

enum
{
    ID_Hello = 1,
    ID_OptionA = 2
};

wxBEGIN_EVENT_TABLE(MyFrame, wxFrame)
    EVT_MENU(ID_OptionA, MyFrame::onOptionA)
wxEND_EVENT_TABLE()

MyFrame::MyFrame()
    : wxFrame(nullptr, wxID_ANY, "MyPrj")
{

    if (wxPlatformInfo::Get().GetOperatingSystemFamilyName() == "Windows") tabControl1->SetImageList(new wxImageList(16, 16));
    else if (wxPlatformInfo::Get().GetOperatingSystemFamilyName() == "Macintosh") tabControl1->SetImageList(new wxImageList(32, 
32));
    else tabControl1->SetImageList(new wxImageList(24, 24));

    wxMenu *menuFile = new wxMenu;
    menuFile->Append(ID_Hello, "&Hello...\tCtrl-H",
                     "Help string shown in status bar for this menu item");
    menuFile->AppendSeparator();
    menuFile->Append(wxID_EXIT);

    wxMenu *menuHelp = new wxMenu;
    menuHelp->Append(wxID_ABOUT);

    wxMenuBar *menuBar = new wxMenuBar;
    menuBar->Append(menuFile, "&File");
    menuBar->Append(menuHelp, "&Help");

    wxMenu *menuOptionA = new wxMenu;
    wxMenu *menuOptionB = new wxMenu;

    menuBar->Append(menuOptionA, "&A");
    menuBar->Append(menuOptionB, "&B");

    SetMenuBar( menuBar );

    CreateStatusBar();
    SetStatusText("Welcome to myPrj!");

    Bind(wxEVT_MENU, &MyFrame::OnHello, this, ID_Hello);
    Bind(wxEVT_MENU, &MyFrame::OnAbout, this, wxID_ABOUT);
    Bind(wxEVT_MENU, &MyFrame::OnExit, this, wxID_EXIT);

    Bind(wxEVT_MENU, [&](wxCommandEvent& event) {
        tabControl1->AddPage(tabA1, "A1", true, 0);
        tabControl1->AddPage(tabA2, "A2", false, 1);
    }, ID_OptionA);

}

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

void MyFrame::onOptionA(wxCommandEvent& event)
{
    tabControl1->AddPage(tabA1, "A1", true, 0);
    tabControl1->AddPage(tabA2, "A2", false, 1);
}

void MyFrame::OnAbout(wxCommandEvent& event)
{
    wxMessageBox("This is a wxWidgets Hello World example",
                 "About Hello World", wxOK | wxICON_INFORMATION);
}

void MyFrame::OnHello(wxCommandEvent& event)
{
    wxLogMessage("Hello world from wxWidgets!");
}

字符串
有：

Bind(wxEVT_MENU, [&](wxCommandEvent& event) {
    tabControl1->AddPage(tabA1, "A1", true, 0);
    tabControl1->AddPage(tabA2, "A2", false, 1);
}, ID_OptionA);

型
单击菜单上的选项A时，我没有得到两个工具菜单选项A1和A2
如果删除ID_OptionA：

Bind(wxEVT_MENU, [&](wxCommandEvent& event) {
    tabControl1->AddPage(tabA1, "A1", true, 0);
    tabControl1->AddPage(tabA2, "A2", false, 1);
});

型
我奇怪地得到两个工具书选项A1和A2时，点击文件->你好
我需要添加和/或修改什么，以便在单击菜单上的“选项A”时显示A1和A2？