具有结构成员变量的关联对话框控件

Question

我有这个struct定义：

typedef struct tagPublicTalkInfo
{
    CString     strAwayCong1;
    CString     strAwayCong2;
    CString     strAwayBrother1;
    CString     strAwayBrother2;
    CString     strChairman;
    CString     strCong;
    CString     strHosp;
    CString     strReader;
    CString     strBrother;
    CString     strTheme;
    CString     strWTConductor;          
    CString     strInterpreter;          
    CString     strMisc;                 
    CString     strWatchtowerStudyTheme; 
    CString     strServiceTalkTheme;     
    CString     strBibleVersesReader;    
    CString     strVideoHost;            
    CString     strVideoCohost;          
    CString     strOpeningPrayer;        
    CString     strClosingPrayer;        
    int         iSongStart;              
    int         iSongMiddle;             
    int         iSongEnd;                
    int         iThemeNumber;            

} S_TALK_INFO;

此结构被传递到对话框中并像这样检索：

void CWeekendMeetingDlg::SetWeekendMeetingInfo(S_TALK_INFO &rsTalkInfo)
{
    m_sWeekendMeetingInfo = rsTalkInfo;
}

S_TALK_INFO CWeekendMeetingDlg::GetWeekendMeetingInfo()
{
    return m_sWeekendMeetingInfo;
}

目前我正在将对话框控件映射到不同的变量并传输到/从我的结构。例如：

m_strChairman = m_sWeekendMeetingInfo.strChairman;
m_sWeekendMeetingInfo.strChairman = m_strChairman;

是否可以将我的控件直接映射到结构成员 CString 变量，或者这会被视为不好的做法吗？

Answer 1

是的，正如 Adrian 所说，您不必局限于使用向导提供给您的变量。我用我的测试项目通过关于对话框来做到这一点。

struct data_type {
    CString a_data;
    CString b_data;
};

class CAboutDlg : public CDialogEx
{
    data_type& dlg_data;
public:
    CAboutDlg(data_type&);
    //CString dummy;
    enum { IDD = IDD_ABOUTBOX };
protected:
    virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support
protected:
    DECLARE_MESSAGE_MAP()
public:
};

CAboutDlg::CAboutDlg(data_type& data) : CDialogEx(IDD_ABOUTBOX), dlg_data(data)
{
}

void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
    CDialogEx::DoDataExchange(pDX);
    DDX_Text(pDX, IDC_EDIT1_ABOUT, dlg_data.a_data);
    DDX_Text(pDX, IDC_EDIT2_ABOUT, dlg_data.b_data);
}

// App command to run the dialog
void CMFCApplicationApp::OnAppAbout()
{
    data_type data{ L"this", L"that" };
    CAboutDlg aboutDlg(data);
    aboutDlg.DoModal();
    assert(false);
}

这里我传递了对外部数据的引用以直接对其进行处理。由于 DoDataExchange 机制，只有当用户按下 OK 时，数据才会被修改。我使用向导添加了第一个 DDX_Text 处理程序，因此注释值 dummy。我刚刚复制并粘贴了该处理程序以添加第二个。

我将断言放在 app 命令中，这样程序就会中断并可以检查数据。

具有结构成员变量的关联对话框控件

Associated dialog controls with a structure member variables

visual-c++

struct

mfc

cdialog