bookdeletedlg.cpp

一个图书管理程序 其中数据库部分需要自己设置 具体设置请参看源码

// BookDeleteDlg.cpp : 实现文件
//

#include "stdafx.h"
#include "library.h"
#include "BookDeleteDlg.h"



// BookDeleteDlg 对话框

IMPLEMENT_DYNAMIC(BookDeleteDlg, CDialog)

BookDeleteDlg::BookDeleteDlg(CWnd* pParent /*=NULL*/)
	: CDialog(BookDeleteDlg::IDD, pParent)
	, m_BookNum(_T(""))
	, m_Amount(0)
	, m_deleteall(FALSE)
{

}

BookDeleteDlg::~BookDeleteDlg()
{
}

void BookDeleteDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	DDX_Text(pDX, IDC_EDIT1, m_BookNum);
	DDX_Text(pDX, IDC_EDIT2, m_Amount);
	DDX_Check(pDX, IDC_CHECK1, m_deleteall);
}


BEGIN_MESSAGE_MAP(BookDeleteDlg, CDialog)
	ON_BN_CLICKED(IDOK, &BookDeleteDlg::OnBnClickedOk)
END_MESSAGE_MAP()


// BookDeleteDlg 消息处理程序

void BookDeleteDlg::OnBnClickedOk()
{
	if(!m_bookSet.IsOpen())
		m_bookSet.Open();
	this->UpdateData();


	m_bookSet.m_strFilter=(CString)"bno like '"+(CString)m_BookNum+(CString)"'";
	m_bookSet.Requery();

	if(this->m_deleteall)
	{
		if (MessageBox(_T("确认彻底删除该图书记录吗?"), _T("确认"), MB_OKCANCEL | MB_ICONQUESTION) == IDOK)
			m_bookSet.Delete();
	}
	
	else{
		if(m_bookSet.m_stock-m_Amount<0)
			AfxMessageBox(_T("删除错误！数量太多"));
	
		if(m_bookSet.m_stock-m_Amount>=0)
		{
			m_bookSet.Edit();
			m_bookSet.m_total-=m_Amount;
			m_bookSet.m_stock-=m_Amount;
			m_bookSet.Update();
			AfxMessageBox(_T("删除成功"));
		}
	}
	
	m_bookSet.Close();
	OnOK();
}