catalogview.cpp

商品管理系统,实现添加

// CatalogView.cpp : implementation of the CCatalogView class
//

#include "stdafx.h"
#include "Catalog.h"

#include "CatalogDoc.h"
#include "CatalogView.h"



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

/////////////////////////////////////////////////////////////////////////////
// CCatalogView

IMPLEMENT_DYNCREATE(CCatalogView, CFormView)

BEGIN_MESSAGE_MAP(CCatalogView, CFormView)
	//{{AFX_MSG_MAP(CCatalogView)
	ON_COMMAND(ID_VIEW_PREV, OnViewPrev)
	ON_COMMAND(ID_VIEW_NEXT, OnViewNext)
	ON_COMMAND(ID_APPEND, OnAppend)
	ON_BN_CLICKED(IDC_SUBMISSION, OnSubmission)
	ON_WM_MOUSEMOVE()
	ON_COMMAND(ID_DELETE_LAST_AND_WRITE, OnDeleteLastAndWrite)
	ON_COMMAND(ID_READ_EXISTING_DATA, OnReadExistingData)
	ON_COMMAND(ID_APP_EXIT, OnAppExit)
	//}}AFX_MSG_MAP
	// Standard printing commands
	ON_COMMAND(ID_FILE_PRINT, CFormView::OnFilePrint)
	ON_COMMAND(ID_FILE_PRINT_DIRECT, CFormView::OnFilePrint)
	ON_COMMAND(ID_FILE_PRINT_PREVIEW, CFormView::OnFilePrintPreview)
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CCatalogView construction/destruction

CCatalogView::CCatalogView()
	: CFormView(CCatalogView::IDD)
{
	Is_Clicked_Firstly=false;
	curIdx=-1;
	NumOfItems=0;	  
//	m_ID_VIS.SetReadOnly(TRUE);

    tipsGiven=false;
	//{{AFX_DATA_INIT(CCatalogView)
	m_szID = _T("");
	m_szItem = _T("");
	m_fPrice = 0.0f;
	m_cur = 1;
	m_sum = 0;
	m_act = _T("输入");
	//}}AFX_DATA_INIT
	// TODO: add construction code here

}

CCatalogView::~CCatalogView()
{
		
}

void CCatalogView::DoDataExchange(CDataExchange* pDX)
{
	CFormView::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CCatalogView)
	DDX_Control(pDX, IDC_EDIT_ID, m_ID_VIS);
	DDX_Text(pDX, IDC_EDIT_ID, m_szID);
	DDV_MaxChars(pDX, m_szID, 8);
	DDX_Text(pDX, IDC_EDIT_ITEM, m_szItem);
	DDV_MaxChars(pDX, m_szItem, 10);
	DDX_Text(pDX, IDC_EDIT_PRICE, m_fPrice);
	DDX_Text(pDX, IDC_CUR, m_cur);
	DDX_Text(pDX, IDC_SUM, m_sum);
	DDX_Text(pDX, IDC_ACT, m_act);
	//}}AFX_DATA_MAP
}

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

	return CFormView::PreCreateWindow(cs);
}

void CCatalogView::OnInitialUpdate()
{
	CFormView::OnInitialUpdate();
	ResizeParentToFit();

}

/////////////////////////////////////////////////////////////////////////////
// CCatalogView printing

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

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

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

void CCatalogView::OnPrint(CDC* pDC, CPrintInfo* /*pInfo*/)
{
	// TODO: add customized printing code here
}

/////////////////////////////////////////////////////////////////////////////
// CCatalogView diagnostics

#ifdef _DEBUG
void CCatalogView::AssertValid() const
{
	CFormView::AssertValid();
}

void CCatalogView::Dump(CDumpContext& dc) const
{
	CFormView::Dump(dc);
}

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

/////////////////////////////////////////////////////////////////////////////
// CCatalogView message handlers

void CCatalogView::OnViewPrev() 
{
	// TODO: Add your command handler code here
	CCatalogDoc*pDoc=GetDocument();
	//UpdateData(TRUE);
    if(curIdx==-1||curIdx==0)
	{
		MessageBox("已到达第一条商品记录,无法再向前!","友情提示^_^",MB_OKCANCEL);	
		return;
	}
	
	m_cur = curIdx;
	m_act = _T("查看");

    //否则就读取最邻近的上一条信息
	m_szID=(pDoc->comdtArr[curIdx-1]).m_szID;
	m_szItem=(pDoc->comdtArr[curIdx-1]).m_szItem;
	m_fPrice=(pDoc->comdtArr[curIdx-1]).m_fPrice;
	curIdx--;//当前指标移动到上一条
	UpdateData(FALSE);
}

void CCatalogView::OnViewNext() 
{
    // TODO: Add your command handler code here
	CCatalogDoc*pDoc=GetDocument();
	//UpdateData(TRUE);
    if(curIdx==NumOfItems-1)
	{
		MessageBox("已到达最后一条商品记录,无法再向后!","友情提示^_^",MB_OKCANCEL);	
		return;
	}

	m_cur = curIdx+2;
	m_act = _T("查看");

    //否则就读取最邻近的上一条信息
	m_szID=(pDoc->comdtArr[curIdx+1]).m_szID;
	m_szItem=(pDoc->comdtArr[curIdx+1]).m_szItem;
	m_fPrice=(pDoc->comdtArr[curIdx+1]).m_fPrice;
	curIdx++;//当前指标移动到上一条
	UpdateData(FALSE);
}

void CCatalogView::OnAppend() 
{
	// TODO: Add your command handler code here
	    CCatalogDoc*pDoc=GetDocument();
		
        curIdx=NumOfItems++;//准备添加下一个，同时总数增加1	
				
		UpdateData(TRUE);
		pDoc->comdtArr[curIdx].m_szID=m_szID;
		pDoc->comdtArr[curIdx].m_szItem=m_szItem;
		pDoc->comdtArr[curIdx].m_fPrice=m_fPrice;

		m_cur = NumOfItems+1;
    	m_sum = NumOfItems;
    	m_act = _T("输入");		
//		UpdateData(FALSE);
		m_szID = _T("");
		m_szItem = _T("");
		m_fPrice = 0.0f;

		
		UpdateData(FALSE);
	
}



void CCatalogView::OnSubmission() 
{
	// TODO: Add your control notification handler code here
	
}

void CCatalogView::OnMouseMove(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default
	
	CFormView::OnMouseMove(nFlags, point);
	 
	if(!tipsGiven)
	{
		
		MessageBox("请选择“商品记录—从商品信息文件中读取数据到数组中”,系统将自动为您读取商品信息；                                                 如果暂时没有商品信息文件，请先按原来的操作方法输入一些新的商品信息。","友情提示^_^",MB_OKCANCEL);	
        tipsGiven=true;
	}
}

void CCatalogView::OnDeleteLastAndWrite() 
{
	// TODO: Add your command handler code here

	//NumOfItems--;//删除数组中的最后一个商品信息

	CCatalogDoc*pDoc=GetDocument();
 
	FILE *fp;
	if((fp=fopen("D:\\文件 W .txt","wb+"))==NULL)
	{
	exit(1);
	}

	fprintf(fp,"现有商品总数是：%d\n",NumOfItems);

	
    for(int curIdx=0; curIdx<NumOfItems; curIdx++)//循环输出每一个商品信息
	{
		char *tmpID=new char[100];
		strcpy(tmpID,(LPCTSTR)pDoc->comdtArr[curIdx].m_szID);
		char *tmpItem=new char[100];
		strcpy(tmpItem,(LPCTSTR)pDoc->comdtArr[curIdx].m_szItem);
	
		fprintf(fp,"第%d条信息：商品编号：%s	商品名称：%s	商品价格：%d\n",curIdx+1,tmpID,tmpItem,pDoc->comdtArr[curIdx].m_fPrice);
	
	}

	fclose(fp);
	
}                                  

void CCatalogView::OnReadExistingData() 
{
	// TODO: Add your command handler code here

	Is_Clicked_Firstly=true;

	//每次重新建立一个输出流
 	char *m_cSzID=new char[100];
	char *m_cSzItem=new char[100];

	char tmpC;
	

//	ofstream out2;
//	out2.open("D:\\这是保存了一些将要被读入到内存中的商品信息数据的文件 R .txt",ios::out); 

	CCatalogDoc*pDoc=GetDocument();
	
	FILE *fp;
	if((fp=fopen("D:\\文件 W .txt","rb+"))==NULL)
	{
	exit(1);
	}

	fscanf(fp,"现有商品总数是：%d\n",&NumOfItems);
 // out2<<NumOfItems<<'\n';

	int i;
    for(curIdx=0; curIdx<NumOfItems; curIdx++)//循环输出每一个商品信息
	{
	
		fscanf(fp,"第%d条信息：商品编号：%s	商品名称：%s	商品价格：%d\n",&i,m_cSzID,m_cSzItem,&pDoc->comdtArr[curIdx].m_fPrice);
		
		pDoc->comdtArr[curIdx].m_szID=_T(m_cSzID);
		pDoc->comdtArr[curIdx].m_szItem=_T(m_cSzItem);
	 	//out2<<(LPCTSTR)m_szID<<(LPCTSTR)m_szItem<<pDoc->comdtArr[curIdx].m_fPrice;

	}
//	out2.close();



    curIdx--;

	m_szID = m_cSzID;
	m_szItem = m_cSzItem;
	m_fPrice =pDoc->comdtArr[curIdx].m_fPrice;


	fclose(fp);
    UpdateData(FALSE);

	
}

void CCatalogView::OnAppExit() 
{
	// TODO: Add your command handler code here
	
}