rentdlg.cpp

这是一个影碟租借系统,它调用了数据库,可实现影碟的租借及自动增减影碟数量.

// RentDlg.cpp : implementation file
//

#include "stdafx.h"
#include "Rent.h"
#include "RentDlg.h"
#include "RentDVDDlg.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About

class CAboutDlg : public CDialog
{
public:
	CAboutDlg();

// Dialog Data
	//{{AFX_DATA(CAboutDlg)
	enum { IDD = IDD_ABOUTBOX };
	//}}AFX_DATA

	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CAboutDlg)
	protected:
	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support
	//}}AFX_VIRTUAL

// Implementation
protected:
	//{{AFX_MSG(CAboutDlg)
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
};

CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
	//{{AFX_DATA_INIT(CAboutDlg)
	//}}AFX_DATA_INIT
}

void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CAboutDlg)
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
	//{{AFX_MSG_MAP(CAboutDlg)
		// No message handlers
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CRentDlg dialog

CRentDlg::CRentDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CRentDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CRentDlg)
	m_check_Date = FALSE;
	m_name = _T("");
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CRentDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CRentDlg)
	DDX_Control(pDX, IDC_LIST_RENT, m_rentInfoList);
	DDX_Control(pDX, IDC_EDIT_NAME, m_editName);
	DDX_Control(pDX, IDC_DATETIMEPICKER_TO, m_DateTo);
	DDX_Control(pDX, IDC_DATETIMEPICKER_FROM, m_DateFrom);
	DDX_Control(pDX, IDC_COMBO_DVD, m_comboDVD);
	DDX_Check(pDX, IDC_CHECK_DATE, m_check_Date);
	DDX_Text(pDX, IDC_EDIT_NAME, m_name);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CRentDlg, CDialog)
	//{{AFX_MSG_MAP(CRentDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_CHECK_DATE, OnCheckDate)
	ON_BN_CLICKED(IDC_BUTTON_QUERY, OnButtonQuery)
	ON_BN_CLICKED(IDC_BUTTON_RENT, OnButtonRent)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CRentDlg message handlers

BOOL CRentDlg::OnInitDialog()
{
	CDialog::OnInitDialog();

	// Add "About..." menu item to system menu.


	// IDM_ABOUTBOX must be in the system command range.
	ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
	ASSERT(IDM_ABOUTBOX < 0xF000);

	CMenu* pSysMenu = GetSystemMenu(FALSE);
	if (pSysMenu != NULL)
	{
		CString strAboutMenu;
		strAboutMenu.LoadString(IDS_ABOUTBOX);
		if (!strAboutMenu.IsEmpty())
		{
			pSysMenu->AppendMenu(MF_SEPARATOR);
			pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
		}
	}

	// Set the icon for this dialog.  The framework does this automatically
	//  when the application's main window is not a dialog
	SetIcon(m_hIcon, TRUE);			// Set big icon
	SetIcon(m_hIcon, FALSE);		// Set small icon
	
	// TODO: Add extra initialization here
	
	 // return TRUE  unless you set the focus to a control
	m_rentInfoList.InsertColumn(0,"ID",LVCFMT_LEFT,90,-1);
    m_rentInfoList.InsertColumn(1,"租借人",LVCFMT_LEFT,90,-1);
    m_rentInfoList.InsertColumn(2,"租借DVD名",LVCFMT_LEFT,90,-1);
	m_rentInfoList.InsertColumn(3,"租借日期",LVCFMT_LEFT,90,-1);
    m_rentInfoList.SetExtendedStyle(LVS_EX_FULLROWSELECT|LVS_EX_GRIDLINES);
	m_DateFrom.SetFormat("yyyyMMdd");
    m_DateTo.SetFormat("yyyyMMdd");
	m_check_Date=FALSE;
	m_DateFrom.EnableWindow(FALSE);
	m_DateTo.EnableWindow(FALSE);

    HRESULT hr;
	try
	{
		hr=m_pConnection.CreateInstance(_uuidof(Connection));
		if(SUCCEEDED(hr))
		{
			m_pConnection->ConnectionString="File Name=my_data1.udl";
            m_pConnection->ConnectionTimeout=20;
			hr=m_pConnection->Open("","","",adConnectUnspecified);
		if(FAILED(hr))
		{
			AfxMessageBox("open fail!");
			return TRUE;
		}
		}
		else
		{
			AfxMessageBox("createinstance of Connection fail!");
			return TRUE;
		}
	}
	catch (_com_error e)
	{
		_bstr_t bstrSource(e.Source());
		_bstr_t bstrDescription(e.Description());
		AfxMessageBox(bstrSource+bstrDescription);
		return TRUE;
	}
    InitListCtr();
	InitComboCtr();

	return TRUE; 


}

void CRentDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
	if ((nID & 0xFFF0) == IDM_ABOUTBOX)
	{
		CAboutDlg dlgAbout;
		dlgAbout.DoModal();
	}
	else
	{
		CDialog::OnSysCommand(nID, lParam);
	}
}

// If you add a minimize button to your dialog, you will need the code below
//  to draw the icon.  For MFC applications using the document/view model,
//  this is automatically done for you by the framework.

void CRentDlg::OnPaint() 
{
	if (IsIconic())
	{
		CPaintDC dc(this); // device context for painting

		SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);

		// Center icon in client rectangle
		int cxIcon = GetSystemMetrics(SM_CXICON);
		int cyIcon = GetSystemMetrics(SM_CYICON);
		CRect rect;
		GetClientRect(&rect);
		int x = (rect.Width() - cxIcon + 1) / 2;
		int y = (rect.Height() - cyIcon + 1) / 2;

		// Draw the icon
		dc.DrawIcon(x, y, m_hIcon);
	}
	else
	{
		CDialog::OnPaint();
	}
}

// The system calls this to obtain the cursor to display while the user drags
//  the minimized window.
HCURSOR CRentDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CRentDlg::OnCheckDate() 
{
if(m_check_Date==FALSE)
{
	m_check_Date=TRUE;
	m_DateFrom.EnableWindow(TRUE);
	m_DateTo.EnableWindow(TRUE);
}
else
{
	m_check_Date=FALSE;
	m_DateFrom.EnableWindow(FALSE);
	m_DateTo.EnableWindow(FALSE);
}
	
}

void CRentDlg::OnButtonQuery() 
{
	
	
}

void CRentDlg::OnButtonRent() 
{
	CRentDVDDlg dlg;
    dlg.DoModal();	
}

void CRentDlg::InitListCtr()
{
	HRESULT hr;
	_RecordsetPtr pRentRecordset;
	hr=pRentRecordset.CreateInstance(_uuidof(Recordset));
	if(FAILED(hr))
	{
		AfxMessageBox("createinstance of Recordset failed!\n can't initiate List control!");
		return;
	}
	CString strSql;
	_variant_t var;
    CString strValue;
	int curItem=0;
	strSql="SELECT * FROM tbRentInfo";
	try
	{
		hr=pRentRecordset->Open(_variant_t(strSql),m_pConnection.GetInterfacePtr(),adOpenDynamic,adLockOptimistic,adCmdText);
		if(SUCCEEDED(hr))
		{
			while(!pRentRecordset->adoEOF)
			{
				var=pRentRecordset->GetCollect((long)0);
				if(var.vt!=VT_NULL)
					strValue=(LPCSTR)_bstr_t(var);
				m_rentInfoList.SetItemText(curItem,1,strValue);

				var=pRentRecordset->GetCollect("DVDID");
				if(var.vt!=VT_NULL)
					strValue=(LPCSTR)_bstr_t(var);
			m_rentInfoList.SetItemText(curItem,2,QueryDVDName(strValue));
                var=pRentRecordset->GetCollect("Date");
				if(var.vt!=VT_NULL)
					strValue=(LPCSTR)_bstr_t(var);
				m_rentInfoList.SetItemText(curItem,3,strValue);
				pRentRecordset->MoveNext();
				curItem++;
			}
		}
		else
		{
			AfxMessageBox("Open recordset fail!");
		}
	}
	catch(_com_error *e)
	{
		AfxMessageBox(e->ErrorMessage());
		return;
	}
	pRentRecordset->Close();
	pRentRecordset=NULL;

}

CString CRentDlg::QueryDVDName(CString DVDID)
{
	_RecordsetPtr pDVDNameRecordset;
    pDVDNameRecordset.CreateInstance(_uuidof(Recordset));
	CString strValue;
	_variant_t var;
	_bstr_t vSQL;
	vSQL="SELECT DVDName FROM tbDVDInfo where DVDID="+DVDID;
	try
	{
		HRESULT hr;
		hr=pDVDNameRecordset->Open(vSQL,m_pConnection.GetInterfacePtr(),adOpenDynamic,adLockOptimistic,adCmdText);
		if(!FAILED(hr))
		{
			var=pDVDNameRecordset->GetCollect("DVDName");
			if(var.vt!=VT_NULL)
			strValue=(LPCSTR)_bstr_t(var);
		}
		else strValue="";
	}
	catch(_com_error *e)
	{
		AfxMessageBox(e->ErrorMessage());
		strValue="";
	}
	pDVDNameRecordset->Close();
	pDVDNameRecordset=NULL;
	return strValue;

}

void CRentDlg::InitComboCtr()
{
	_RecordsetPtr pDVDNameRecordset;
	pDVDNameRecordset.CreateInstance(_uuidof(Recordset));
	
	try
	{
		pDVDNameRecordset->Open("SELECT DVDName FROM tbDVDInfo",m_pConnection.GetInterfacePtr(),adOpenDynamic,adLockOptimistic,adCmdText);
	}
	catch(_com_error *e)
	{
		AfxMessageBox(e->ErrorMessage());
		return;
	}
	_variant_t var;	
	CString strValue;
	m_comboDVD.AddString("");
	try{
		while(!pDVDNameRecordset->adoEOF)
		{
			var=pDVDNameRecordset->GetCollect("DVDName");
			if(var.vt!=VT_NULL)
				strValue=(LPCSTR)_bstr_t(var);
			m_comboDVD.AddString(strValue);
			pDVDNameRecordset->MoveNext();
		}
		pDVDNameRecordset->Close();
	pDVDNameRecordset=NULL;
	}
	catch(_com_error *e)
	{
		AfxMessageBox(e->ErrorMessage());
	}


	


}