PROSAGA码农传奇-嵌入式C/C++-如何在文本框包含浮点值时获取MFC中文本框的值

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  <P>
    您可以通过在此示例中调用GetDlgItemText和std :: stod来获取值：
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   <pre>
    <code>
      class CAboutDlg : public CDialogEx
{
    CString m_txt;
    double m_num;
public:
    CAboutDlg() noexcept;

// Dialog Data
#ifdef AFX_DESIGN_TIME
    enum { IDD = IDD_ABOUTBOX };
#endif

protected:
    virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support

// Implementation
protected:
    DECLARE_MESSAGE_MAP()
public:
    afx_msg void OnBnClickedOk();
};

CAboutDlg::CAboutDlg() noexcept : CDialogEx(IDD_ABOUTBOX)
{
}

void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
    CDialogEx::DoDataExchange(pDX);
}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialogEx)
    ON_BN_CLICKED(IDOK, &CAboutDlg::OnBnClickedOk)
END_MESSAGE_MAP()

// App command to run the dialog
void CSO55114372App::OnAppAbout()
{
    CAboutDlg aboutDlg;
    aboutDlg.DoModal();
}

// CSO55114372App customization load/save methods

void CSO55114372App::PreLoadState()
{
    BOOL bNameValid;
    CString strName;
    bNameValid = strName.LoadString(IDS_EDIT_MENU);
    ASSERT(bNameValid);
    GetContextMenuManager()->AddMenu(strName, IDR_POPUP_EDIT);
    bNameValid = strName.LoadString(IDS_EXPLORER);
    ASSERT(bNameValid);
    GetContextMenuManager()->AddMenu(strName, IDR_POPUP_EXPLORER);
}

void CSO55114372App::LoadCustomState()
{
}

void CSO55114372App::SaveCustomState()
{
}

// CSO55114372App message handlers

void CAboutDlg::OnBnClickedOk()
{
    GetDlgItemText(IDC_EDIT2, m_txt);
    std::wstring s((LPCTSTR)m_txt);
    m_num = std::stod(s);
    CDialogEx::OnOK();
}

</code>
  </pre>
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