如何在程序中出现错误之前修复丢失';' '*'？

How can I fix missing ';' before '*' error in my program?

本文关键字：程序 错误      更新时间：2023-10-16

我尝试创建MyWindowSplitter类，并将CView类派生的另一个新类作为MySplitter类中的运行时类。但当我试图编译时，我在GetDocument函数的MyProjectView.h中遇到了这些错误：

Error 1
error C2143: syntax error : missing ';' before '*'
Error 2
error C4430: missing type specifier - int assumed. Note: C++ does not support default-int

问题在哪里？我该如何解决？

//MySplitter.cpp
#include "StdAfx.h"
#include "MySplitter.h"
#include "SplitDemoSixView.h"
#include "TestView.h"
#ifdef _DEBUG
#undef THIS_FILE
static char THIS_FILE[]=__FILE__;
#define new DEBUG_NEW
#endif
CMySplitter::CMySplitter(void)
{
}
CMySplitter::~CMySplitter(void)
{
}
void CMySplitter::ChangeViewClass(CRuntimeClass* pNewView)
{
m_pDynamicViewClass = pNewView;
}
void CMySplitter::DeleteView(int row, int col)
{
CView* pView = (CView*)GetDlgItem(IdFromRowCol(row, col));
if(pView->IsKindOf(RUNTIME_CLASS(CSplitDemoSixView)))
{
    ChangeViewClass(RUNTIME_CLASS(CSplitDemoSixView));
}
else
{
    if(pView->IsKindOf(RUNTIME_CLASS(CTestView)))
    {
        ChangeViewClass(RUNTIME_CLASS(CTestView));
    }
}
CSplitterWnd::DeleteView(row, col);
}
//TestView.cpp drived from CView
#include "stdafx.h"
#include "SplitDemoSix.h"
#include "TestView.h"
#include "SplitDemoSixDoc.h"
#include "SplitDemoSixView.h"

// CTestView
IMPLEMENT_DYNCREATE(CTestView, CView)
CTestView::CTestView()
{
}
CTestView::~CTestView()
{
}
BEGIN_MESSAGE_MAP(CTestView, CView)
END_MESSAGE_MAP()

// CTestView drawing
void CTestView::OnDraw(CDC* pDC)
{
CDocument* pDoc = GetDocument();
// TODO: add draw code here
}

// CTestView diagnostics
#ifdef _DEBUG
void CTestView::AssertValid() const
{
CView::AssertValid();
}
#ifndef _WIN32_WCE
void CTestView::Dump(CDumpContext& dc) const
{
CView::Dump(dc);
}
#endif
#endif //_DEBUG

// CTestView message handlers

问题就在这里：

//MyProjectView.h
#pragma once
#include "resource.h"
#include "MySplitter.h"

class CSplitDemoSixView : public CFormView
{
 protected: // create from serialization only
CSplitDemoSixView();
DECLARE_DYNCREATE(CSplitDemoSixView)
public:
enum{ IDD = IDD_SPLITDEMOSIX_FORM };
// Attributes
public:
    //ERROR PERFORMS IN THIS FUNCTION:
CSplitDemoSixDoc* GetDocument();
// Operations
public:
// Overrides
public:
virtual BOOL PreCreateWindow(CREATESTRUCT& cs);
protected:
virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support
virtual void OnInitialUpdate(); 
...

您需要CDocument派生类的前向声明：

// Attributes
public:
    //ERROR PERFORMS IN THIS FUNCTION:
class CSplitDemoSixDoc;
CSplitDemoSixDoc* GetDocument();
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