dbview.cpp

简单的学生成绩管理系统,只能供入门者参考

// DBView.cpp : implementation of the CDBView class
//

#include "stdafx.h"
#include "DB.h"
#include"SCDLG.h"
#include "DBSet.h"
#include "DBDoc.h"
#include "DBView.h"
#include "ADDDLG.h"
#include "SORTDLG.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CDBView

IMPLEMENT_DYNCREATE(CDBView, CRecordView)

BEGIN_MESSAGE_MAP(CDBView, CRecordView)
	//{{AFX_MSG_MAP(CDBView)
	ON_BN_CLICKED(IDC_ADD, OnAdd)
	ON_BN_CLICKED(IDC_delete, Ondelete)
	ON_BN_CLICKED(IDC_modify, Onmodify)
	ON_BN_CLICKED(IDC_find, Onfind)
	ON_BN_CLICKED(IDC_sort, Onsort)
	ON_BN_CLICKED(IDC_SHOWGRADE, OnShowgrade)
	//}}AFX_MSG_MAP
	// Standard printing commands
	ON_COMMAND(ID_FILE_PRINT, CRecordView::OnFilePrint)
	ON_COMMAND(ID_FILE_PRINT_DIRECT, CRecordView::OnFilePrint)
	ON_COMMAND(ID_FILE_PRINT_PREVIEW, CRecordView::OnFilePrintPreview)
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CDBView construction/destruction

CDBView::CDBView()
	: CRecordView(CDBView::IDD)
{ showflag=false;
	
	//{{AFX_DATA_INIT(CDBView)
	m_pSet = NULL;
	//}}AFX_DATA_INIT
	// TODO: add construction code here

}

CDBView::~CDBView()
{
}

void CDBView::DoDataExchange(CDataExchange* pDX)
{
	CRecordView::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CDBView)
	DDX_FieldText(pDX, IDC_Sage, m_pSet->m_Sage, m_pSet);
	DDX_FieldText(pDX, IDC_Sname, m_pSet->m_Sname, m_pSet);
	DDX_FieldText(pDX, IDC_Sno, m_pSet->m_Sno, m_pSet);
	DDX_FieldText(pDX, IDC_SDEPT, m_pSet->m_Sdept, m_pSet);
	DDX_FieldText(pDX, IDC_SSEX, m_pSet->m_Ssex, m_pSet);
	//}}AFX_DATA_MAP
}

BOOL CDBView::PreCreateWindow(CREATESTRUCT& cs)
{
	// TODO: Modify the Window class or styles here by modifying
	//  the CREATESTRUCT cs

	return CRecordView::PreCreateWindow(cs);
}

void CDBView::OnInitialUpdate()
{
	m_pSet = &GetDocument()->m_dBSet;
	CRecordView::OnInitialUpdate();
	GetParentFrame()->RecalcLayout();
	ResizeParentToFit();

}

/////////////////////////////////////////////////////////////////////////////
// CDBView printing

BOOL CDBView::OnPreparePrinting(CPrintInfo* pInfo)
{
	// default preparation
	return DoPreparePrinting(pInfo);
}

void CDBView::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
	// TODO: add extra initialization before printing
}

void CDBView::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
	// TODO: add cleanup after printing
}

/////////////////////////////////////////////////////////////////////////////
// CDBView diagnostics

#ifdef _DEBUG
void CDBView::AssertValid() const
{
	CRecordView::AssertValid();
}

void CDBView::Dump(CDumpContext& dc) const
{
	CRecordView::Dump(dc);
}

CDBDoc* CDBView::GetDocument() // non-debug version is inline
{
	ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CDBDoc)));
	return (CDBDoc*)m_pDocument;
}
#endif //_DEBUG

/////////////////////////////////////////////////////////////////////////////
// CDBView database support
CRecordset* CDBView::OnGetRecordset()
{
	return m_pSet;
}


/////////////////////////////////////////////////////////////////////////////
// CDBView message handlers

void CDBView::OnAdd() 
{
	ADDDLG mydlg;
	if(mydlg.DoModal()==IDOK)
	{m_pSet->AddNew();
	m_pSet->m_Sage=mydlg.m_sage;
    m_pSet->m_Sno=mydlg.m_sno;
    m_pSet->m_Sname=mydlg.m_sname;
	m_pSet->m_Sdept=mydlg.m_sdept;
	m_pSet->m_Ssex=mydlg.m_ssex;
	m_pSet->Update();
	m_pSet->Requery();
	m_pSet->MoveLast();
	UpdateData(false);
	}
	
}

void CDBView::Ondelete() 
{
	if(MessageBox("确定吗？","你真的要删除吗？",MB_YESNO|MB_ICONINFORMATION)==IDYES)
	{
		if(!m_pSet->IsEOF())
		{m_pSet->Delete();
		m_pSet->Requery();
		UpdateData(false);}
	
}}

void CDBView::Onmodify() 
{
ADDDLG mydlg;
mydlg.m_sage=m_pSet->m_Sage;
mydlg.m_sname=m_pSet->m_Sname;
mydlg.m_sno=m_pSet->m_Sno;
mydlg.m_sdept=m_pSet->m_Sdept;
mydlg.m_ssex=m_pSet->m_Ssex;
UpdateData(false);
if(mydlg.DoModal()==IDOK)
{m_pSet->Edit();
m_pSet->m_Sage=mydlg.m_sage;
    m_pSet->m_Sno=mydlg.m_sno;
    m_pSet->m_Sname=mydlg.m_sname;
m_pSet->m_Sdept=mydlg.m_sdept;
	m_pSet->m_Ssex=mydlg.m_ssex;
	m_pSet->Update();
	m_pSet->Requery();
	
	UpdateData(false);}
}

void CDBView::Onfind() 
{showflag=true;
	SORTDLG mydlg;
  if(mydlg.DoModal()==IDOK)
  {if(mydlg.sortstr=="sage")
    m_pSet->m_strFilter=mydlg.sortstr+"="+mydlg.m_findstr;
   else	
     m_pSet->m_strFilter=mydlg.sortstr+"='"+mydlg.m_findstr+"'";
      m_pSet->Requery();
      UpdateData(false);	}

}

void CDBView::Onsort() 
{    showflag=false;
	
	SORTDLG mydlg;
   
    if(mydlg.DoModal()==IDOK)
	{m_pSet->m_strSort=mydlg.sortstr;
	m_pSet->Requery();
	UpdateData(false);
	}
}

void CDBView::OnShowgrade() 
{
SCDLG mydlg;
mydlg.DoModal();}