[求助]也许很简单,但我真的不会啊!关于DDX...

// simple text operations
void AFXAPI DDX_Text(CDataExchange* pDX, int nIDC, BYTE& value);
void AFXAPI DDX_Text(CDataExchange* pDX, int nIDC, short& value);
void AFXAPI DDX_Text(CDataExchange* pDX, int nIDC, int& value);
void AFXAPI DDX_Text(CDataExchange* pDX, int nIDC, UINT& value);
void AFXAPI DDX_Text(CDataExchange* pDX, int nIDC, long& value);
void AFXAPI DDX_Text(CDataExchange* pDX, int nIDC, DWORD& value);
void AFXAPI DDX_Text(CDataExchange* pDX, int nIDC, LONGLONG& value);
void AFXAPI DDX_Text(CDataExchange* pDX, int nIDC, ULONGLONG& value);
void AFXAPI DDX_Text(CDataExchange* pDX, int nIDC, CString& value);
void AFXAPI DDX_Text(__in CDataExchange* pDX, __in int nIDC, __out_ecount_z(nMaxLen) LPTSTR value, __in int nMaxLen);
void AFXAPI DDX_Text(CDataExchange* pDX, int nIDC, float& value);
void AFXAPI DDX_Text(CDataExchange* pDX, int nIDC, double& value);
void AFXAPI DDX_Text(CDataExchange* pDX, int nIDC, COleCurrency& value);
void AFXAPI DDX_Text(CDataExchange* pDX, int nIDC, COleDateTime& value);
void AFXAPI DDX_Text(CDataExchange* pDX, int nIDC, GUID& value);
void AFXAPI DDX_Text(CDataExchange* pDX, int nIDC, DECIMAL& value);
void AFXAPI DDX_Text(CDataExchange* pDX, int nIDC, FILETIME& value);

以上是DDX_Text的定义,只要上面有的类型的都可以

DDX_Text(pDX, IDC_EDIT8, m_data);   向导添加变量时，在组合框 类别(T):选择Value；左边选择int 变量类型，变量名下输入变量名就好了，如我输入的变量名是m_data。