www.pudn.com > 基本GIS系统开发.rar > Data1View.cpp, change:2005-06-01,size:5908b

// Data1View.cpp : implementation of the CData1View class 
// 
 
#include "stdafx.h" 
#include "Data1.h" 
 
#include "Data1Set.h" 
#include "Data1Doc.h" 
#include "Data1View.h" 
 
#ifdef _DEBUG 
#define new DEBUG_NEW 
#undef THIS_FILE 
static char THIS_FILE[] = __FILE__; 
#endif 
 
///////////////////////////////////////////////////////////////////////////// 
// CData1View 
 
IMPLEMENT_DYNCREATE(CData1View, CRecordView) 
 
BEGIN_MESSAGE_MAP(CData1View, CRecordView) 
	//{{AFX_MSG_MAP(CData1View) 
	ON_COMMAND(ID_RECORD_ADD, OnRecordAdd) 
	ON_COMMAND(ID_RECORD_MODIFY, OnRecordModify) 
	ON_COMMAND(ID_RECORD_DELETE, OnRecordDelete) 
	ON_COMMAND(ID_RECORD_FILTER, OnRecordFilter) 
	ON_COMMAND(ID_RECORD_SORT, OnRecordSort) 
	ON_COMMAND(ID_RECORD_SAVE, OnRecordSave) 
	//}}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() 
 
///////////////////////////////////////////////////////////////////////////// 
// CData1View construction/destruction 
 
CData1View::CData1View() 
	: CRecordView(CData1View::IDD) 
{ 
	//{{AFX_DATA_INIT(CData1View) 
	m_pSet = NULL; 
	//}}AFX_DATA_INIT 
	// TODO: add construction code here 
 
} 
 
CData1View::~CData1View() 
{ 
} 
 
void CData1View::DoDataExchange(CDataExchange* pDX) 
{ 
	CRecordView::DoDataExchange(pDX); 
	//{{AFX_DATA_MAP(CData1View) 
	DDX_FieldText(pDX, IDC_EDIT1, m_pSet->m_only_id, m_pSet); 
	DDX_FieldText(pDX, IDC_EDIT2, m_pSet->m_city_name, m_pSet); 
	DDX_FieldText(pDX, IDC_EDIT3, m_pSet->m_population, m_pSet); 
	DDX_FieldText(pDX, IDC_EDIT4, m_pSet->m_area, m_pSet); 
	DDX_FieldText(pDX, IDC_EDIT5, m_pSet->m_industry, m_pSet); 
	DDX_FieldText(pDX, IDC_EDIT6, m_pSet->m_translate, m_pSet); 
	DDX_FieldText(pDX, IDC_EDIT7, m_pSet->m_enviroment, m_pSet); 
	//}}AFX_DATA_MAP 
} 
 
BOOL CData1View::PreCreateWindow(CREATESTRUCT& cs) 
{ 
	// TODO: Modify the Window class or styles here by modifying 
	//  the CREATESTRUCT cs 
 
	return CRecordView::PreCreateWindow(cs); 
} 
 
void CData1View::OnInitialUpdate() 
{ 
	m_pSet = &GetDocument()->m_data1Set; 
	CRecordView::OnInitialUpdate(); 
	GetParentFrame()->RecalcLayout(); 
	ResizeParentToFit(); 
 
} 
 
///////////////////////////////////////////////////////////////////////////// 
// CData1View printing 
 
BOOL CData1View::OnPreparePrinting(CPrintInfo* pInfo) 
{ 
	// default preparation 
	return DoPreparePrinting(pInfo); 
} 
 
void CData1View::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/) 
{ 
	// TODO: add extra initialization before printing 
} 
 
void CData1View::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/) 
{ 
	// TODO: add cleanup after printing 
} 
 
///////////////////////////////////////////////////////////////////////////// 
// CData1View diagnostics 
 
#ifdef _DEBUG 
void CData1View::AssertValid() const 
{ 
	CRecordView::AssertValid(); 
} 
 
void CData1View::Dump(CDumpContext& dc) const 
{ 
	CRecordView::Dump(dc); 
} 
 
CData1Doc* CData1View::GetDocument() // non-debug version is inline 
{ 
	ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CData1Doc))); 
	return (CData1Doc*)m_pDocument; 
} 
#endif //_DEBUG 
 
///////////////////////////////////////////////////////////////////////////// 
// CData1View database support 
CRecordset* CData1View::OnGetRecordset() 
{ 
	return m_pSet; 
} 
 
 
///////////////////////////////////////////////////////////////////////////// 
// CData1View message handlers 
 
void CData1View::OnRecordAdd()  
{ 
	// TODO: Add your command handler code here 
	m_pSet->AddNew(); //在记录集合中增加一条记录 
	m_bAdding=TRUE;   //标识正在进行增加记录操作 
	UpdateData(FALSE);//将新增空记录的内容转移到视图的控制中 
	 
} 
 
void CData1View::OnRecordModify()  
{ 
	// TODO: Add your command handler code here 
	m_pSet->Edit();           //使当前记录处于编辑状态 
	UpdateData(TRUE);         //在视图中对话框控制的内容修改记录集合的当前记录 
	if(m_pSet->CanUpdate())   //如果能够对数据源进行更新 
		m_pSet->Update();     //更新数据源 
	m_pSet->Requery();        //重新产生数据源 
	UpdateData(FALSE);        //以记录集合中当前记录的内容修改视图中的对话框控制 
	 
} 
 
void CData1View::OnRecordDelete()  
{ 
	// TODO: Add your command handler code here 
	m_pSet->Delete();                //删除记录集合的当前记录 
	m_pSet->MoveNext(); 
	if(m_pSet->IsEOF())              //如果超出记录集合的范围 
		m_pSet->MoveLast(); 
	if(m_pSet->IsBOF())              //如果记录指针在第一条记录前，即记录集合中无任何记录 
		m_pSet->SetFieldNull(NULL);  //将记录设置为空 
	UpdateData(FALSE);               //以记录集合当前记录的内容修改视图中的控制 
} 
 
void CData1View::OnRecordFilter()  
{ 
	// TODO: Add your command handler code here 
	if(m_pSet->IsOpen())//如果记录集合对象处于打开状态，则关闭记录集合对象 
		m_pSet->Close(); 
	m_pSet->m_strFilter="population>600"; 
	m_pSet->Open(); 
} 
 
void CData1View::OnRecordSort()  
{ 
	// TODO: Add your command handler code here 
	if(m_pSet->IsOpen())//如果记录集合对象处于打开状态，则关闭记录集合对象 
		m_pSet->Close(); 
	m_pSet->m_strSort="population DESC";//设置排序子式 
//	m_pSet->m_strSort="enviroment,population DESC";//设置排序子式enviroment升序，后者降序 
 
	m_pSet->Open(); 
	 
} 
 
int CData1View::OnRecordSave()  
{ 
	// TODO: Add your command handler code here 
	if(m_bAdding) 
	{ 
		m_bAdding=FALSE; 
		UpdateData(TRUE); 
		if(m_pSet->CanUpdate()) 
			m_pSet->Update(); 
		m_pSet->Requery(); 
		UpdateData(FALSE); 
		return TRUE; 
	} 
	return FALSE; 
} 
 
BOOL CData1View::OnMove(UINT nIDMoveCommand)  
{ 
	// TODO: Add your specialized code here and/or call the base class 
	if(m_bAdding) 
	{ 
		m_bAdding=FALSE; 
		UpdateData(TRUE); 
		if(m_pSet->CanUpdate()) 
			m_pSet->Update(); 
		m_pSet->Requery(); 
		UpdateData(FALSE); 
		return TRUE; 
 
	} 
	else 
	 
	return CRecordView::OnMove(nIDMoveCommand); 
}