freqlistdlg.cpp

通过VC++6.0连接数据库,实现的是一个公司设备管理系统,采购设备,借出和归还设备的详细记录,提高库存管理.

// FreqListDlg.cpp : implementation file
//

#include "stdafx.h"
#include "DeviceDBS.h"
#include "FreqListDlg.h"

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

/////////////////////////////////////////////////////////////////////////////
// CFreqListDlg dialog


CFreqListDlg::CFreqListDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CFreqListDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CFreqListDlg)
		// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT
}


void CFreqListDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CFreqListDlg)
	DDX_Control(pDX, IDC_LIST_LEND, m_listLend);
	//}}AFX_DATA_MAP
}


BEGIN_MESSAGE_MAP(CFreqListDlg, CDialog)
	//{{AFX_MSG_MAP(CFreqListDlg)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CFreqListDlg message handlers

BOOL CFreqListDlg::OnInitDialog() 
{
	CDialog::OnInitDialog();
	
	// TODO: Add extra initialization here
	//设置列表框控件扩展风格
	DWORD dwExStyle = LVS_EX_FULLROWSELECT | LVS_EX_GRIDLINES |
		LVS_EX_HEADERDRAGDROP | LVS_EX_ONECLICKACTIVATE | LVS_EX_UNDERLINEHOT;
	m_listLend.SetExtendedStyle(dwExStyle);
	//初始化借出信息列表框控件
	//添加设备编号列
	LV_COLUMN lvColumn;
	lvColumn.mask = LVCF_FMT | LVCF_WIDTH | LVCF_TEXT | LVCF_SUBITEM;
	lvColumn.fmt = LVCFMT_CENTER;
	lvColumn.cx = 80;
	lvColumn.iSubItem = 0;     
	lvColumn.pszText = "设备编号";
	m_listLend.InsertColumn(0, &lvColumn);
	//添加设备名称列
	lvColumn.cx = 80;  
	lvColumn.iSubItem = 1; 
	lvColumn.pszText = "设备名称";
	m_listLend.InsertColumn(1, &lvColumn);
	//添加使用次数列
	lvColumn.cx = 140;
	lvColumn.iSubItem = 2;     
	lvColumn.pszText = "使用次数";
	m_listLend.InsertColumn(2, &lvColumn);
	InitCtrlData();
	return TRUE;  // return TRUE unless you set the focus to a control
	              // EXCEPTION: OCX Property Pages should return FALSE
}

void CFreqListDlg::InitCtrlData()
{
	TRY{
		CRecordset rs(m_pDB);
		//打开记录.
		CString sql = "select a.DEVICE_CODE,b.device_name,count(a.DEVICE_CODE)  "
			"from DEVICE_LEND_INFO_TAB a,device_info_tab b "
			"where a.device_code = b.device_code "
			"group by a.DEVICE_CODE,b.device_name";
		rs.Open(CRecordset::dynaset, sql);
		while (!rs.IsEOF()) {
			int nCount;
			CString strCode,strName;
			//获取设备编号字段值
			rs.GetFieldValue((short)0, strCode);
			//获取设备名称字段值
			rs.GetFieldValue(1, strName);
			CDBVariant var;
			//获取统计信息字段值
			rs.GetFieldValue(2, var, SQL_C_SLONG);
			if (var.m_dwType != DBVT_NULL)	
				nCount = var.m_iVal;
			//获取当前的纪录条数.
			int nIndex = m_listLend.GetItemCount();
			LV_ITEM lvItem;
			lvItem.mask = LVIF_TEXT ;	
			lvItem.iItem = nIndex;				//行数
			lvItem.iSubItem = 0;
			lvItem.pszText = (char*)(LPCTSTR)strCode;		//第一列
			//在最后一行插入记录值.
			m_listLend.InsertItem(&lvItem);	
			//设置该行的其他列的值.
			m_listLend.SetItemText(nIndex,1,strName);	
			CString temp;
			temp.Format("%d",nCount);
			m_listLend.SetItemText(nIndex,2,temp);	
			rs.MoveNext();	
		}
		rs.Close();
	}
	CATCH(CDBException,ex)
	{
		AfxMessageBox (ex->m_strError);
		AfxMessageBox (ex->m_strStateNativeOrigin);		
	}
	AND_CATCH(CMemoryException,pEx)
	{
		pEx->ReportError();
		AfxMessageBox ("memory exception");
	}
	AND_CATCH(CException,e)
	{
		TCHAR szError[100];
		e->GetErrorMessage(szError,100);
		AfxMessageBox (szError);
	}
	END_CATCH   				
}