do2.cpp

一个用VC编写的MFC界面的图书管理系统

// DO2.cpp : implementation file
//

#include "stdafx.h"
#include "lib.h"
#include "stdlib.h"
#include "DO.h"
#include "DO2.h"
#include "fstream.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// DO2 dialog


DO2::DO2(CWnd* pParent /*=NULL*/)
	: CDialog(DO2::IDD, pParent)
{
	//{{AFX_DATA_INIT(DO2)
	m_edit21 = _T("");
	m_edit22 = _T("");
	m_text21 = _T("");
	//}}AFX_DATA_INIT
}


void DO2::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(DO2)
	DDX_Text(pDX, IDC_LAB21, m_edit21);
	DDX_Text(pDX, IDC_LAB22, m_edit22);
	DDX_Text(pDX, IDC_EDIT1, m_text21);
	//}}AFX_DATA_MAP
}


BEGIN_MESSAGE_MAP(DO2, CDialog)
	//{{AFX_MSG_MAP(DO2)
	ON_BN_CLICKED(IDC_BUTTON1, OnButton1)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// DO2 message handlers

void DO2::OnButton1() 
{    ofstream fileout;
     ifstream filein;
	 ofstream fileout2;
     ifstream filein2;
	 int maxbook=100;
	 int i=0,work=0;
	 CString ok;
	 CString   strbookid; 
	 CString   strbookname; 
	 CString  yj="（已借出）";
     CString  wj="（未借出）";   	 
	 CString  shuh="图书编号：";  
	 CString  shum="图书名称：";
	 CString  yj2="  已借书号:";
     CString  wj2="（未借书）";   	 
	 CString  shuh2="读者编号：";  
	 CString  shum2="读者姓名：";
	 CString  temp;
	      char str[80];
		  const maxrow=300;
		  CString text[maxrow];
		  CString text2[maxrow];
		  filein.open("book.dat"); 
		  for ( i=0;i<maxrow;i++)
		  {
		  filein.getline(str,80); 
		  text[i]=str;
		  }
		  filein.close();
		   filein2.open("reader.dat"); 
		  for ( i=0;i<maxrow;i++)
		  {
		  filein2.getline(str,80); 
		  text2[i]=str;
		  }
		  filein2.close();
		  GetDlgItem(IDC_EDIT1)->GetWindowText(strbookid); 

	switch(choice)
	{       		
		 case 3:
		{
		  fileout.open("book.dat",ios::out|ios::trunc);
 		  ofstream out("book.dat"); 

		  for ( i=0;i<maxrow-1;i++)
		  {     
			  if( text[i].Compare(strbookid)==0 && strbookid!="") 
			  {   
			      i=i+2;
				  work=1;			  
				  continue;
			  }
			  if(text[i]!="")fileout<<text[i]<<endl;		 			  		  			  
		  }
		  
		  CDialog::OnOK();
		  if(work){ MessageBox("删除图书成功");work=0;}
		  else  MessageBox("查无此书");
		  break;
		}
		 case 4:
		{
		
		  for ( i=0;i<maxrow-1;i++)
		  {     
			  if( text[i].Compare(strbookid)==0 && strbookid!="") 
			  {   work=1;
				  if(text[i+2]=="0")temp=shuh+strbookid+"  "+shum+text[i+1]+wj;
				  else if(text[i+2]=="1")temp=shuh+strbookid+"  "+shum+text[i+1]+yj;
			  }
 			  			  		  			  
		  }
		
		  CDialog::OnOK();
		  if(work) {MessageBox(temp);work=0;}
		  else  MessageBox("查无此书");
		  break;
		}
		case 6:
		{    GetDlgItem(IDC_EDIT1)->GetWindowText(ok);
			 if(ok=="ok")
			{			
				fileout.open("book.dat",ios::out|ios::trunc);	
				
			    MessageBox("全删操作成功");break;
			}
			else   MessageBox("操作没有成功");
			break;
		}
		 case 13:
		{
		  fileout2.open("reader.dat",ios::out|ios::trunc);
 		  ofstream out("reader.dat"); 

		  for ( i=0;i<maxrow-1;i++)
		  {     
			  if( text2[i].Compare(strbookid)==0 && strbookid!="") 
			  {   
			      i=i+2;
				  work=1;			  
				  continue;
			  }
 		    if(text2[i]!="")fileout2<<text2[i]<<endl;	  		  			  
		  }
		  
		  CDialog::OnOK();
		  if(work){ MessageBox("删除读者成功");work=0;}
		  else  MessageBox("查无此读者");
		  break;
		}
		 case 14:
		{
		
		  for ( i=0;i<maxrow-1;i++)
		  {     
			  if( text2[i].Compare(strbookid)==0 && strbookid!="") 
			  {   work=1;
				  if(text2[i+2]=="0")temp=shuh2+strbookid+"  "+shum2+text2[i+1]+wj2;
				  else  temp=shuh2+strbookid+"  "+shum2+text2[i+1]+yj2+text2[i+2];
			  }
 			  			  		  			  
		  }
		
		  CDialog::OnOK();
		  if(work) {MessageBox(temp);work=0;}
		  else  MessageBox("查无此读者");
		  break;
		}
		case 16:
		{    GetDlgItem(IDC_EDIT1)->GetWindowText(ok);
			 if(ok=="ok")
			{			
				fileout2.open("reader.dat",ios::out|ios::trunc);	
				
			    MessageBox("全删操作成功");break;
			}
			else   MessageBox("操作没有成功");
			break;
		}
	}
	
	fileout.close();
	filein.close();
	CDialog::OnOK();
 
}