odbcsnapview.cpp

《VC++ 编程技巧与示例 .rar》各个示例代码绝对可用

// OdbcSnapView.cpp : implementation of the COdbcSnapView class
//

#include "stdafx.h"
#include "OdbcSnap.h"

#include "OdbcSnapSet.h"
#include "OdbcSnapDoc.h"
#include "OdbcSnapView.h"

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

/////////////////////////////////////////////////////////////////////////////
// COdbcSnapView

IMPLEMENT_DYNCREATE(COdbcSnapView, CRecordView)

BEGIN_MESSAGE_MAP(COdbcSnapView, CRecordView)
	//{{AFX_MSG_MAP(COdbcSnapView)
	ON_COMMAND(ID_RECORD_ADD, OnRecordAdd)
	ON_COMMAND(ID_RECORD_DELETE, OnRecordDelete)
	ON_COMMAND(ID_RECORD_REFRESH, OnRecordRefresh)
	//}}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()

/////////////////////////////////////////////////////////////////////////////
// COdbcSnapView construction/destruction

COdbcSnapView::COdbcSnapView()
	: CRecordView(COdbcSnapView::IDD)
{
	//{{AFX_DATA_INIT(COdbcSnapView)
	m_pSet = NULL;
	//}}AFX_DATA_INIT
	// TODO: add construction code here
	m_bAddMode=FALSE;
}

COdbcSnapView::~COdbcSnapView()
{
}

void COdbcSnapView::DoDataExchange(CDataExchange* pDX)
{
	CRecordView::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(COdbcSnapView)
	DDX_Control(pDX, IDC_EDIT6, m_ctlSection);
	DDX_FieldText(pDX, IDC_EDIT1, m_pSet->m_Capacity, m_pSet);
	DDX_FieldText(pDX, IDC_EDIT2, m_pSet->m_CourseID, m_pSet);
	DDX_FieldText(pDX, IDC_EDIT3, m_pSet->m_InstructorID, m_pSet);
	DDX_FieldText(pDX, IDC_EDIT4, m_pSet->m_RoomNo, m_pSet);
	DDX_FieldText(pDX, IDC_EDIT5, m_pSet->m_Schedule, m_pSet);
	DDX_FieldText(pDX, IDC_EDIT6, m_pSet->m_SectionNo, m_pSet);
	//}}AFX_DATA_MAP
}

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

	return CRecordView::PreCreateWindow(cs);
}

void COdbcSnapView::OnInitialUpdate()
{
	m_pSet = &GetDocument()->m_odbcSnapSet;

	CRecordView::OnInitialUpdate();
	GetParentFrame()->RecalcLayout();
	ResizeParentToFit();

}

/////////////////////////////////////////////////////////////////////////////
// COdbcSnapView printing

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

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

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

/////////////////////////////////////////////////////////////////////////////
// COdbcSnapView diagnostics

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

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

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

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


/////////////////////////////////////////////////////////////////////////////
// COdbcSnapView message handlers
//●:
void COdbcSnapView::OnRecordAdd() 
{
	// TODO: Add your command handler code here
	if(m_bAddMode)
	{
		OnMove(ID_RECORD_FIRST);
	}
	m_pSet->AddNew();
	m_bAddMode=TRUE;
	UpdateData(FALSE);
}

void COdbcSnapView::OnRecordDelete() 
{
	// TODO: Add your command handler code here
	m_pSet->Delete();
	m_pSet->MoveNext();
	if(m_pSet->IsEOF())
	{
		m_pSet->MoveLast();
	}
	if(m_pSet->IsBOF())
	{
		m_pSet->SetFieldNull(NULL);
	}
	UpdateData(FALSE);
}

void COdbcSnapView::OnRecordRefresh() 
{
	// TODO: Add your command handler code here
	if(m_bAddMode)
	{
		m_pSet->Move(0);
		m_bAddMode=FALSE;
	}
	UpdateData(FALSE);
}

BOOL COdbcSnapView::OnMove(UINT nIDMoveCommand) 
{
	// TODO: Add your specialized code here and/or call the base class
	if(m_bAddMode)
	{
		if(!UpdateData())
		{
			return FALSE;
		}
		m_pSet->Update();
		m_pSet->Requery();
		UpdateData(FALSE);
		m_bAddMode=FALSE;
		return TRUE;
	}
	return CRecordView::OnMove(nIDMoveCommand);
}