atmdlg.cpp

本程序是利用com原理开发的一个ATM机与银行之间的分布式应用

// ATMDlg.cpp : implementation file
//

#include "stdafx.h"
#include "ATM.h"
#include "ATMDlg.h"
#include "DlgExchange.h"

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

//为组件库初始化定义
#include <objbase.h> 

extern BOOL      g_IsAccountValid;
extern CString   g_AccountID;

BOOL   g_ExchangeType=FALSE;              //交易类型，True为存钱，False为取钱 
float  g_CurrentFund=0.0;               //当前余额
/////////////////////////////////////////////////////////////////////////////
// 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)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CATMDlg dialog

CATMDlg::CATMDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CATMDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CATMDlg)
	m_AccountID = _T("");
	m_CurrentFund = _T("");
	//}}AFX_DATA_INIT
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CATMDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CATMDlg)
	DDX_Text(pDX, IDC_Account, m_AccountID);
	DDV_MaxChars(pDX, m_AccountID, 12);
	DDX_Text(pDX, IDC_Money, m_CurrentFund);
	DDV_MaxChars(pDX, m_CurrentFund, 12);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CATMDlg, CDialog)
	//{{AFX_MSG_MAP(CATMDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_WithDraw, OnWithDraw)
	ON_BN_CLICKED(IDC_Deposit,  OnDeposit)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CATMDlg message handlers

BOOL CATMDlg::OnInitDialog()
{
	CDialog::OnInitDialog();
	// 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);
		}
	}
	SetIcon(m_hIcon, TRUE);			// Set big icon
	SetIcon(m_hIcon, FALSE);		// Set small icon	

	QueryCurrentFund();

	return TRUE;  
}

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

void CATMDlg::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();
}

HCURSOR CATMDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}


//===================================================
void CATMDlg::OnWithDraw() 
{
	g_ExchangeType = FALSE;	 //
	CDlgExchange dlg;
	dlg.DoModal();
	QueryCurrentFund();
}

void CATMDlg::OnDeposit() 
{
	g_ExchangeType = TRUE;	 //
	CDlgExchange dlg;
	dlg.DoModal();	
	QueryCurrentFund();	
}

void CATMDlg::QueryCurrentFund()        //查询余额
{
	HRESULT	  hr;
    IAccount *IAccount;                 //指向接口的指针
	COSERVERINFO srvinfo={0,L"192.168.0.2",NULL,0};
	MULTI_QI MultiQI = {&IID_IUnknown,NULL,NOERROR};
	hr=CoCreateInstanceEx(CLSID_Account, NULL, CLSCTX_REMOTE_SERVER,
		                  &srvinfo,  1,   &MultiQI); 
	if(hr!=0)
	   AfxMessageBox("COM组件创建失败!");
    else
	{
	   BSTR UserID = A2BSTR(g_AccountID);
	   float currentFund=0.0 ;
       hr = IAccount->GetCurrentFund(UserID,&currentFund);    // call method
	   
	   g_CurrentFund = currentFund;
	   m_AccountID   = g_AccountID;
	   m_CurrentFund.Format("%10.2f", currentFund);
       hr = IAccount->Release();                //释放接口
    }
	UpdateData(FALSE);
}