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序号：28095 发表者：雪花 发表日期：2003-01-17 19:29:58
<br>主题：请高手指点
<br>内容：我在非模态对话框类中想获得文档档的数据变量<BR><BR>使用指针方式CMyDoc *pDoc，在对话框类头文件中可以使用前向声明，如：<BR><BR>class CMyDoc;<BR>class CMyDlg<BR>{<BR> CStudentDlg::CStudentDlg(CView* pView,CMyDoc* pDoc);//增加CMyDoc*参数，构造时传入初始化成员m_pDoc。<BR>.........<BR><BR> CMyDoc* m_pDoc;<BR>};<BR>对话框类cpp文件中:（应包含文档类的头文件）<BR>CMyDlg::CMyDlg(CWnd* pParent,CMyDoc* pDoc)<BR>{<BR> m_pDoc = pDoc;<BR>}<BR>BOOL CStudentDlg::Create()<BR>{<BR> return CDialog::Create(CStudentDlg::IDD);<BR>}<BR>建立非模态对话框：<BR>class CMyView<BR>{<BR>.....<BR><BR>CMyDlg *m_pDlg;<BR>.....<BR>}<BR>在MyView.cpp中<BR>void CMyView::OnBuld() <BR>{<BR> if(m_pDlg->GetSafeHwnd()==0)<BR> {<BR> m_pDlg->Create();<BR> }<BR>}<BR>然后在对话框类cpp文件中调用m_pDoc无法通过编译，为什么？<BR>应该如何解决？？？？？？？？？？<BR>
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回复者：在水一方 回复日期：2003-01-17 19:35:59
<br>内容：在MyDlg.h中加入CMyDoc的头生明<BR> #include "mydoc.h"<BR>VC对类的前项声明如class CMyDoc一般是不认可的。
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回复者：雪花 回复日期：2003-01-17 20:04:42
<br>内容：我试过不行!!!<BR><BR>在MyDlg.h的头声明中加入#include"mydoc.h"编译无法通过!
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回复者：雪花 回复日期：2003-01-17 20:08:55
<br>内容：在MyDlg.h的头声明中加入#include"mydoc.h"<BR>然后如下：<BR>class CMyDlg<BR>{<BR> CMyDoc* m_pDoc;<BR>};<BR>编译无法通过!<BR>
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回复者：在水一方 回复日期：2003-01-17 20:15:39
<br>内容：方便把你的Project传上来吗？俺替你把把脉:)
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回复者：雪花 回复日期：2003-01-17 20:27:22
<br>内容：#if !defined(AFX_STUDENTDLG_H__06D62361_21A0_11D7_A020_0010DC73EFC7__INCLUDED_)<BR>#define AFX_STUDENTDLG_H__06D62361_21A0_11D7_A020_0010DC73EFC7__INCLUDED_<BR><BR>#if _MSC_VER > 1000<BR>#pragma once<BR><BR>#endif // _MSC_VER > 1000<BR>// StudentDlg.h : header file<BR>//<BR>#define WM_GOODBYE WM_USER+5<BR>#define WM_ADDLIST WM_USER+6<BR>extern CView * m_pView;<BR>#include "stdafx.h"<BR>#include "MyStudentDoc.h"<BR>#include "student.h"<BR>/////////////////////////////////////////////////////////////////////////////<BR>// CStudentDlg dialog<BR><BR>class CStudentDlg : public CDialog<BR>{<BR>// Construction<BR>protected:<BR> POSITION m_position;<BR> CStudentList *m_pList;<BR><BR>public:<BR> CStudentDlg(CWnd* pParent = NULL); // standard constructor<BR><BR>// Dialog Data<BR> //{{AFX_DATA(CStudentDlg)<BR> enum { IDD = IDD_DIALOG1 };<BR> float m_dlg_data;<BR> CString m_dlg_name;<BR> int m_dlg_number;<BR> //}}AFX_DATA<BR>//public:<BR>// CMyStudentDoc* GetDo();<BR><BR><BR>// Overrides<BR> // ClassWizard generated virtual function overrides<BR> //{{AFX_VIRTUAL(CStudentDlg)<BR> protected:<BR> virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV support<BR> //}}AFX_VIRTUAL<BR><BR>// Implementation<BR>protected:<BR><BR> // Generated message map functions<BR> //{{AFX_MSG(CStudentDlg)<BR> virtual void OnCancel();<BR> virtual void OnOK();<BR> afx_msg void OnUserOut();<BR> afx_msg void OnAddNew();<BR> //}}AFX_MSG<BR> DECLARE_MESSAGE_MAP()<BR><BR>private:<BR>// CView* m_pView;<BR><BR>public:<BR> CStudentDlg(CView * pView);<BR> BOOL Create();<BR> CMyStudentDoc * m_pdoc;<BR>};<BR><BR>//{{AFX_INSERT_LOCATION}}<BR>// Microsoft Visual C++ will insert additional declarations immediately before the previous line.<BR><BR>#endif // !defined(AFX_STUDENTDLG_H__06D62361_21A0_11D7_A020_0010DC73EFC7__INCLUDED_)<BR><BR><BR><BR>// StudentDlg.cpp : implementation file<BR>//<BR><BR>#include "stdafx.h"<BR>#include "MyStudent.h"<BR>#include "StudentDlg.h"<BR>#include "MyStudentDoc.h"<BR>#ifdef _DEBUG<BR>#define new DEBUG_NEW<BR>#undef THIS_FILE<BR>static char THIS_FILE[] = __FILE__;<BR>#endif<BR>CView* m_pView;<BR>#include "Student.h"<BR>//CMyStudentDoc m_pDoc;<BR>/////////////////////////////////////////////////////////////////////////////<BR>// CStudentDlg dialog<BR><BR><BR>CStudentDlg::CStudentDlg(CWnd* pParent /*=NULL*/)<BR> : CDialog(CStudentDlg::IDD, pParent)<BR>{<BR> //{{AFX_DATA_INIT(CStudentDlg)<BR> m_pView=NULL;<BR> //}}AFX_DATA_INIT<BR>}<BR><BR>CStudentDlg::CStudentDlg(CView* pView)<BR>{<BR> m_pView=pView;<BR> m_dlg_data = 0.0f;<BR> m_dlg_name = _T("");<BR> m_dlg_number = 0;<BR> m_position=NULL;<BR>// m_pDoc=NULL;<BR>// m_pDOC=NULL;<BR>}<BR><BR>void CStudentDlg::DoDataExchange(CDataExchange* pDX)<BR>{<BR> CDialog::DoDataExchange(pDX);<BR> //{{AFX_DATA_MAP(CStudentDlg)<BR> DDX_Text(pDX, IDC_DATA, m_dlg_data);<BR> DDX_Text(pDX, IDC_NAME, m_dlg_name);<BR> DDX_Text(pDX, IDC_NUMBER, m_dlg_number);<BR> //}}AFX_DATA_MAP<BR>}<BR><BR>BOOL CStudentDlg::Create()<BR>{<BR> return CDialog::Create(CStudentDlg::IDD);<BR>}<BR><BR><BR><BR>BEGIN_MESSAGE_MAP(CStudentDlg, CDialog)<BR> //{{AFX_MSG_MAP(CStudentDlg)<BR> ON_BN_CLICKED(IDC_USER_OUT, OnUserOut)<BR> ON_BN_CLICKED(IDC_ADD_NEW, OnAddNew)<BR> //}}AFX_MSG_MAP<BR>END_MESSAGE_MAP()<BR><BR>/////////////////////////////////////////////////////////////////////////////<BR>// CStudentDlg message handlers<BR><BR>void CStudentDlg::OnCancel() <BR>{<BR> // TODO: Add extra cleanup here<BR> if(m_pView!=NULL)<BR> {<BR> m_pView->PostMessage(WM_GOODBYE,IDCANCEL);<BR> }<BR> else<BR> {<BR> CDialog::OnCancel();<BR> }<BR>}<BR><BR>void CStudentDlg::OnOK() <BR>{<BR> // TODO: Add extra validation here<BR> if(m_pView!=NULL)<BR> {<BR> UpdateData(TRUE);<BR> m_pView->PostMessage(WM_GOODBYE,IDOK);<BR> }<BR> else<BR> {<BR> CDialog::OnOK();<BR> }<BR>}<BR><BR>void CStudentDlg::OnUserOut() <BR>{<BR> // TODO: Add your control notification handler code here<BR> <BR>}<BR><BR>void CStudentDlg::OnAddNew() <BR>{<BR> // TODO: Add your control notification handler code here<BR>// UpdateData(true);<BR> if(UpdateData(TRUE))<BR> {<BR> CStudent*pStudent=new CStudent;<BR> pStudent->m_nGrade=m_dlg_data;<BR> pStudent->m_strName=m_dlg_name;<BR> m_position = m_pList->InsertAfter(m_position, pStudent);<BR> }<BR> <BR>}<BR><BR><BR><BR><BR><BR>// MyStudentDoc.h : interface of the CMyStudentDoc class<BR>//<BR>/////////////////////////////////////////////////////////////////////////////<BR><BR>#if !defined(AFX_MYSTUDENTDOC_H__67F618AD_20E5_11D7_A020_0010DC73EFC7__INCLUDED_)<BR>#define AFX_MYSTUDENTDOC_H__67F618AD_20E5_11D7_A020_0010DC73EFC7__INCLUDED_<BR><BR>#if _MSC_VER > 1000<BR>#pragma once<BR>#endif // _MSC_VER > 1000<BR>#include "StudentDlg.h"<BR>#include "student.h"<BR>class CMyStudentDoc : public CDocument<BR>{<BR>protected: // create from serialization only<BR> CMyStudentDoc();<BR> DECLARE_DYNCREATE(CMyStudentDoc)<BR><BR>// Attributes<BR>public:<BR> CStudentList* GetList()<BR> {<BR> return & m_studentList;<BR> }<BR>// Operations<BR>public:<BR><BR>// Overrides<BR> // ClassWizard generated virtual function overrides<BR> //{{AFX_VIRTUAL(CMyStudentDoc)<BR> public:<BR> virtual BOOL OnNewDocument();<BR> virtual void Serialize(CArchive& ar);<BR> //}}AFX_VIRTUAL<BR><BR>// Implementation<BR>public:<BR> CStudent m_studentdlg;<BR> virtual ~CMyStudentDoc();<BR>#ifdef _DEBUG<BR> virtual void AssertValid() const;<BR> virtual void Dump(CDumpContext& dc) const;<BR>#endif<BR><BR>protected:<BR><BR>// Generated message map functions<BR>protected:<BR> //{{AFX_MSG(CMyStudentDoc)<BR> afx_msg void OnDelData();<BR> afx_msg void OnDisplayNet();<BR> afx_msg void OnDisplayNumber();<BR> afx_msg void OnDisplayUp();<BR> //}}AFX_MSG<BR> DECLARE_MESSAGE_MAP()<BR>private:<BR> CStudentList m_studentList;<BR>};<BR><BR>/////////////////////////////////////////////////////////////////////////////<BR><BR>//{{AFX_INSERT_LOCATION}}<BR>// Microsoft Visual C++ will insert additional declarations immediately before the previous line.<BR><BR>#endif // !defined(AFX_MYSTUDENTDOC_H__67F618AD_20E5_11D7_A020_0010DC73EFC7__INCLUDED_)<BR><BR><BR><BR><BR>// MyStudentDoc.cpp : implementation of the CMyStudentDoc class<BR>//<BR><BR>#include "stdafx.h"<BR>#include "MyStudent.h"<BR>#include "StudentDlg.h"<BR>#include "MyStudentDoc.h"<BR><BR>#ifdef _DEBUG<BR>#define new DEBUG_NEW<BR>#undef THIS_FILE<BR>static char THIS_FILE[] = __FILE__;<BR>#endif<BR><BR>/////////////////////////////////////////////////////////////////////////////<BR>// CMyStudentDoc<BR><BR>IMPLEMENT_DYNCREATE(CMyStudentDoc, CDocument)<BR><BR>BEGIN_MESSAGE_MAP(CMyStudentDoc, CDocument)<BR> //{{AFX_MSG_MAP(CMyStudentDoc)<BR> ON_BN_CLICKED(IDC_DEL_DATA, OnDelData)<BR> ON_BN_CLICKED(IDC_DISPLAY_NET, OnDisplayNet)<BR> ON_BN_CLICKED(IDC_DISPLAY_NUMBER, OnDisplayNumber)<BR> ON_BN_CLICKED(IDC_DISPLAY_UP, OnDisplayUp)<BR> //}}AFX_MSG_MAP<BR>END_MESSAGE_MAP()<BR><BR>/////////////////////////////////////////////////////////////////////////////<BR>// CMyStudentDoc construction/destruction<BR><BR>CMyStudentDoc::CMyStudentDoc()<BR>{<BR> // TODO: add one-time construction code here<BR><BR>}<BR><BR>CMyStudentDoc::~CMyStudentDoc()<BR>{<BR>}<BR><BR>BOOL CMyStudentDoc::OnNewDocument()<BR>{<BR> if (!CDocument::OnNewDocument())<BR> return FALSE;<BR><BR> // TODO: add reinitialization code here<BR> // (SDI documents will reuse this document)<BR><BR> return TRUE;<BR>}<BR><BR><BR><BR>/////////////////////////////////////////////////////////////////////////////<BR>// CMyStudentDoc serialization<BR><BR>void CMyStudentDoc::Serialize(CArchive& ar)<BR>{<BR> if (ar.IsStoring())<BR> {<BR> // TODO: add storing code here<BR> }<BR> else<BR> {<BR> // TODO: add loading code here<BR> }<BR>}<BR><BR>/////////////////////////////////////////////////////////////////////////////<BR>// CMyStudentDoc diagnostics<BR><BR>#ifdef _DEBUG<BR>void CMyStudentDoc::AssertValid() const<BR>{<BR> CDocument::AssertValid();<BR>}<BR><BR>void CMyStudentDoc::Dump(CDumpContext& dc) const<BR>{<BR> CDocument::Dump(dc);<BR>}<BR>#endif //_DEBUG<BR><BR>/////////////////////////////////////////////////////////////////////////////<BR>// CMyStudentDoc commands<BR><BR><BR>void CMyStudentDoc::OnDelData() <BR>{<BR> // TODO: Add your control notification handler code here<BR> <BR>}<BR><BR>void CMyStudentDoc::OnDisplayNet() <BR>{<BR> // TODO: Add your control notification handler code here<BR> <BR>}<BR><BR>void CMyStudentDoc::OnDisplayNumber() <BR>{<BR> // TODO: Add your control notification handler code here<BR> <BR>}<BR><BR>void CMyStudentDoc::OnDisplayUp() <BR>{<BR> // TODO: Add your control notification handler code here<BR> <BR>}<BR><BR><BR><BR>// student.h<BR><BR>#ifndef _INSIDE_VISUAL_CPP_MYSTUDENT<BR>#define _INSIDE_VISUAL_CPP_MYSTUDENT<BR>//#include "stdafx.h"<BR>#include <afxtempl.h><BR>class CStudent : public CObject<BR>{<BR> DECLARE_DYNAMIC(CStudent)<BR>public:<BR> int m_number;<BR> CString m_strName;<BR> float m_nGrade;<BR><BR> <BR> CStudent()<BR> {<BR> m_nGrade = 0;<BR> m_number = 0;<BR> }<BR> <BR> CStudent(const char* szName, float nGrade) : m_strName(szName)<BR> {<BR> m_nGrade = nGrade;<BR> }<BR><BR> CStudent(const CStudent& s) : m_strName(s.m_strName)<BR> {<BR> // copy constructor<BR> m_nGrade = s.m_nGrade;<BR> }<BR><BR> const CStudent& operator =(const CStudent& s)<BR> {<BR> m_strName = s.m_strName;<BR> m_nGrade = s.m_nGrade;<BR> return *this;<BR> }<BR><BR> BOOL operator ==(const CStudent& s) const<BR> {<BR> if ((m_strName == s.m_strName) && (m_nGrade == s.m_nGrade)) {<BR> return TRUE;<BR> }<BR> else {<BR> return FALSE;<BR> }<BR> }<BR><BR> BOOL operator !=(const CStudent& s) const<BR> {<BR> // Let's make use of the operator we just defined!<BR> return !(*this == s);<BR> }<BR>#ifdef _DEBUG<BR> void Dump(CDumpContext& dc) const;<BR>#endif // _DEBUG<BR>};<BR><BR>typedef CTypedPtrList<CObList, CStudent*> CStudentList;<BR><BR>#endif // _INSIDE_VISUAL_CPP_STUDENT<BR><BR><BR>上面是我工程中的对话框类和文档类及自定义STUDENT类的内容!!!!!!<BR>请指教!!!!!!!!!!<BR>
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回复者：雪花 回复日期：2003-01-17 20:29:24
<br>内容：提示的错误是<BR>studentdlg.h(65) : error C2143: syntax error : missing ';' before '*'<BR>studentdlg.h(65) : error C2501: 'CMyStudentDoc' : missing storage-class or type specifiers<BR>studentdlg.h(65) : error C2501: 'm_pdoc' : missing storage-class or type specifiers
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回复者：tjhe 回复日期：2003-01-17 20:54:58
<br>内容：将工程打包贴上来吧，这样看不方便。
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回复者：雪花 回复日期：2003-01-17 21:32:13
<br>内容：thank!
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