[英]Associated dialog controls with a structure member variables
I have this struct
definition: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;
This structure is passed into a dialog and retrieved like this:这个结构被传递到一个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;
}
At the moment I am mapping the dialog controls to distinct variables and transfer to / from my structure.目前我正在将对话框控件映射到不同的变量并传输到/从我的结构中传输。 For example:
例如:
m_strChairman = m_sWeekendMeetingInfo.strChairman;
m_sWeekendMeetingInfo.strChairman = m_strChairman;
Is possible to map my controls directly to the structure member CString
variables or would that be considered bad practice?是否可以将 map 我的控件直接用于结构成员
CString
变量,或者这会被认为是不好的做法?
Yes, as Adrian says, you don't have to confine yourself to using the variables that the wizard would hand you.是的,正如 Adrian 所说,您不必将自己局限于使用向导会交给您的变量。 I used my test project to do this with the about dialog.
我使用我的测试项目通过 about 对话框执行此操作。
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);
}
Here I passed a reference to the external data to work on it directly.在这里,我传递了对外部数据的引用以直接对其进行处理。 Because of the
DoDataExchange
mechanism, The data will only be modified if the user pushes OK .由于
DoDataExchange
机制,只有用户按下OK才会修改数据。 I added the first DDX_Text
handler with the wizard, hence the commented value dummy
.我使用向导添加了第一个
DDX_Text
处理程序,因此注释值dummy
。 I just copied and pasted that handler to add the second.我只是复制并粘贴了那个处理程序来添加第二个。
I put the assert in the app command so the program would break there and could examine the data.我将断言放在 app 命令中,这样程序就会在那里中断并检查数据。
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