exam8_3doc.cpp

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// Exam8_3Doc.cpp : implementation of the CExam8_3Doc class
//

#include "stdafx.h"
#include "Exam8_3.h"

#include "Exam8_3Doc.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CExam8_3Doc

IMPLEMENT_DYNCREATE(CExam8_3Doc, CDocument)

BEGIN_MESSAGE_MAP(CExam8_3Doc, CDocument)
	//{{AFX_MSG_MAP(CExam8_3Doc)
		// NOTE - the ClassWizard will add and remove mapping macros here.
		//    DO NOT EDIT what you see in these blocks of generated code!
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CExam8_3Doc construction/destruction

CExam8_3Doc::CExam8_3Doc()
{
	// TODO: add one-time construction code here

}

CExam8_3Doc::~CExam8_3Doc()
{
}

BOOL CExam8_3Doc::OnNewDocument()
{
	if (!CDocument::OnNewDocument())
		return FALSE;

	// TODO: add reinitialization code here
	// (SDI documents will reuse this document)

	return TRUE;
}



/////////////////////////////////////////////////////////////////////////////
// CExam8_3Doc serialization

void CExam8_3Doc::Serialize(CArchive& ar)
{
	/*if (ar.IsStoring())
	{
		// TODO: add storing code here
	}
	else
	{
		// TODO: add loading code here
	}*/
	m_ObArray.Serialize(ar);
}

/////////////////////////////////////////////////////////////////////////////
// CExam8_3Doc diagnostics

#ifdef _DEBUG
void CExam8_3Doc::AssertValid() const
{
	CDocument::AssertValid();
}

void CExam8_3Doc::Dump(CDumpContext& dc) const
{
	CDocument::Dump(dc);
}
#endif //_DEBUG

/////////////////////////////////////////////////////////////////////////////
// CExam8_3Doc commands

void CExam8_3Doc::delStuAll()
{
    /*int index;	
	CStudent*ps;	
	index=this->GetStuNumber();//获取数据中元素个数	
	while(index--)//循环删除学生记录	
	{
		ps=GetStu(index-1);	
		delete ps;
	}   
	m_ObArray.RemoveAll(); //清空对象数据    
	SetModifiedFlag(); //设置修改标志  
	this->UpdateAllViews(NULL);//更新视图*/

	DeleteContents();    
	SetModifiedFlag();   
	this->UpdateAllViews(NULL);
}

void CExam8_3Doc::DelStu(int index)
{  
	CStudent*ps=GetStu(index);//获取要删除的学生对象指针  
	delete ps; //删除学生对象
	m_ObArray.RemoveAt(index);//在对象数组中删除元素(指针)  
	SetModifiedFlag(); //设置修改标志  
	//更新视图,将调用视图类的OnUpdate函数  
	this->UpdateAllViews(NULL);
}

int CExam8_3Doc::GetStuNumber()
{
	//调用GetSize函数返回数组中的元素个数  
	return m_ObArray.GetSize(); 
}

CStudent* CExam8_3Doc::GetStu(int index)
{
    //GetUpperBound返回最大索引值
	if(index<0||index>m_ObArray.GetUpperBound() )  
		return 0;
	//调用GetAt函数返回一个学生对象指针 
	return (CStudent*)m_ObArray.GetAt(index);
}

void CExam8_3Doc::AddStu(CString Name, int Grade)
{
    //动态创建一个学生对象，并使用构造函数赋值	
	CStudent*pStu=new CStudent(Name,Grade);
	//调用Add函数增加一个学生对象到对象数组	
	m_ObArray.Add(pStu); 	
	SetModifiedFlag(); //设置修改标志
}

void CExam8_3Doc::DeleteContents() 
{
	// TODO: Add your specialized code here and/or call the base class
	int index;	
	index=m_ObArray.GetSize();	
	while(index--)		
		delete m_ObArray.GetAt(index);    
	m_ObArray.RemoveAll(); 
	
	CDocument::DeleteContents();
}