如何在wxwidget c++中为文本c++添加搜索功能

#include <wx/wx.h>

class SearchFrame : public wxFrame
{
public:
    SearchFrame(const wxString& title)
        : wxFrame(NULL, wxID_ANY, title)
    {
        wxPanel* panel = new wxPanel(this);
        
        wxBoxSizer* sizer = new wxBoxSizer(wxVERTICAL);

        // 创建搜索框
        wxBoxSizer* searchSizer = new wxBoxSizer(wxHORIZONTAL);
        m_searchTextCtrl = new wxTextCtrl(panel, wxID_ANY, wxEmptyString, wxDefaultPosition, wxDefaultSize, 0);
        searchSizer->Add(m_searchTextCtrl, 1, wxEXPAND|wxALL, 5);

        // 创建搜索按钮
        wxButton* searchButton = new wxButton(panel, wxID_ANY, "Search");
        searchSizer->Add(searchButton, 0, wxALL, 5);
        Connect(searchButton->GetId(), wxEVT_COMMAND_BUTTON_CLICKED, wxCommandEventHandler(SearchFrame::OnSearchButtonClicked));

        sizer->Add(searchSizer, 0, wxEXPAND);

        // 创建文本显示区域
        m_resultTextCtrl = new wxTextCtrl(panel, wxID_ANY, wxEmptyString, wxDefaultPosition, wxDefaultSize, wxTE_MULTILINE|wxTE_READONLY);
        sizer->Add(m_resultTextCtrl, 1, wxEXPAND|wxALL, 5);

        panel->SetSizer(sizer);
        sizer->Fit(panel);
        sizer->SetSizeHints(this);
    }

private:
    void OnSearchButtonClicked(wxCommandEvent& event)
    {
        wxString searchText = m_searchTextCtrl->GetValue();
        wxString textToSearch = m_resultTextCtrl->GetValue();
        
        size_t pos = textToSearch.find(searchText);
        if (pos != wxString::npos)
        {
            wxString matchedText = textToSearch.Mid(pos, searchText.length());
            m_resultTextCtrl->SetValue(matchedText);
        }
        else
        {
            m_resultTextCtrl->SetValue("No match found.");
        }
    }

    wxTextCtrl* m_searchTextCtrl;
    wxTextCtrl* m_resultTextCtrl;
};

class MyApp : public wxApp
{
public:
    virtual bool OnInit()
    {
        SearchFrame* frame = new SearchFrame("Search Text");
        frame->Show(true);
        return true;
    }
};

wxIMPLEMENT_APP(MyApp);