usemultdlg.cpp

Thinkinc++English 电子书籍,英文版

// UseMultDlg.cpp : 实现文件
//

#include "stdafx.h"
#include "UseMult.h"
#include "UseMultDlg.h"
#include ".\usemultdlg.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#endif


// CUseMultDlg 对话框



CUseMultDlg::CUseMultDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CUseMultDlg::IDD, pParent)
	, m_n1(0)
	, m_n2(0)
	, m_dwCookie(0)
	, m_dwCookieTime(0)
{
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CUseMultDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	DDX_Control(pDX, IDC_EDIT1, m_time);
	DDX_Text(pDX, IDC_EDIT2, m_n1);
	DDX_Text(pDX, IDC_EDIT3, m_n2);
	DDX_Control(pDX, IDC_EDIT4, m_edit);
}

BEGIN_MESSAGE_MAP(CUseMultDlg, CDialog)
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	//}}AFX_MSG_MAP
	ON_BN_CLICKED(IDC_ADVISE, OnBnClickedAdvise)
	ON_BN_CLICKED(IDC_UNADVISE, OnBnClickedUnadvise)
	ON_BN_CLICKED(IDOK, OnBnClickedOk)
	ON_BN_CLICKED(IDCANCEL, OnBnClickedCancel)
END_MESSAGE_MAP()


// CUseMultDlg 消息处理程序

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

	// 设置此对话框的图标。当应用程序主窗口不是对话框时，框架将自动
	//  执行此操作
	SetIcon(m_hIcon, TRUE);			// 设置大图标
	SetIcon(m_hIcon, FALSE);		// 设置小图标

	// TODO: 在此添加额外的初始化代码
	m_dwCookie = 0;
	m_dwCookieTime = 0;
	HRESULT hr = m_spObj.CreateInstance( _T("MultConnect.DispConnect.1") );
	if( FAILED( hr ) )
	{
		AfxMessageBox( _T("没有注册还是没有初始化？") );
		CDialog::OnCancel();
	}

	GetDlgItem( IDC_UNADVISE )->EnableWindow( FALSE );
	GetDlgItem( IDC_ADVISE )->EnableWindow( TRUE );

	return TRUE;  // 除非设置了控件的焦点，否则返回 TRUE
}

// 如果向对话框添加最小化按钮，则需要下面的代码
//  来绘制该图标。对于使用文档/视图模型的 MFC 应用程序，
//  这将由框架自动完成。

void CUseMultDlg::OnPaint() 
{
	if (IsIconic())
	{
		CPaintDC dc(this); // 用于绘制的设备上下文

		SendMessage(WM_ICONERASEBKGND, reinterpret_cast<WPARAM>(dc.GetSafeHdc()), 0);

		// 使图标在工作矩形中居中
		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;

		// 绘制图标
		dc.DrawIcon(x, y, m_hIcon);
	}
	else
	{
		CDialog::OnPaint();
	}
}

//当用户拖动最小化窗口时系统调用此函数取得光标显示。
HCURSOR CUseMultDlg::OnQueryDragIcon()
{
	return static_cast<HCURSOR>(m_hIcon);
}

void CUseMultDlg::OnBnClickedAdvise()
{
	HRESULT hr;
	CComQIPtr<IConnectionPointContainer> spContainer( m_spObj );
	ASSERT( spContainer );		// 组件没有提供连接点功能

	spContainer->FindConnectionPoint(
		__uuidof(_IDispConnectEvents), &m_spCP );
	ASSERT( m_spCP );			// 没有找到连接点接口

	hr = m_spCP->Advise( &m_sink, &m_dwCookie );
	ASSERT( SUCCEEDED( hr ) );	// 连接失败
	
	spContainer->FindConnectionPoint(
		__uuidof(_IDispConnectEvents2), &m_spCPTime );
	ASSERT( m_spCPTime );		// 没有找到连接点接口

	hr = m_spCPTime->Advise( &m_sinkTime, &m_dwCookieTime );
	ASSERT( SUCCEEDED( hr ) );	// 连接失败

	m_sink.SetResultWnd( &m_edit );
	m_sinkTime.SetResultWnd( &m_time );

	m_spObj->SetTimer( 1000 );

	GetDlgItem( IDC_UNADVISE )->EnableWindow( TRUE );
	GetDlgItem( IDC_ADVISE )->EnableWindow( FALSE );
}

void CUseMultDlg::OnBnClickedUnadvise()
{
	if( m_spCP )
	{
		m_spCP->Unadvise( m_dwCookie );
		m_spCP.Release();
	}
	if( m_spCPTime )
	{
		m_spObj->KillTimer();
		m_spCPTime->Unadvise( m_dwCookieTime );
		m_spCPTime.Release();
	}

	GetDlgItem( IDC_UNADVISE )->EnableWindow( FALSE );
	GetDlgItem( IDC_ADVISE )->EnableWindow( TRUE );
}

void CUseMultDlg::OnBnClickedOk()
{
	UpdateData();
	m_spObj->Add( m_n1, m_n2 );
}

void CUseMultDlg::OnBnClickedCancel()
{
	if( m_spCP )
		m_spCP->Unadvise( m_dwCookie );
	if( m_spCPTime )
	{
		m_spObj->KillTimer();
		m_spCPTime->Unadvise( m_dwCookieTime );
	}

	CDialog::OnCancel();
}