usedlg.cpp

Thinkinc++English 电子书籍,英文版

// UseDlg.cpp : implementation file
//

#include "stdafx.h"
#include "Use.h"
#include "UseDlg.h"

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

/////////////////////////////////////////////////////////////////////////////
// CUseDlg dialog

CUseDlg::CUseDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CUseDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CUseDlg)
	m_n1 = 0;
	m_n2 = 0;
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CUseDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CUseDlg)
	DDX_Control(pDX, IDC_EDIT3, m_edit);
	DDX_Text(pDX, IDC_EDIT1, m_n1);
	DDX_Text(pDX, IDC_EDIT2, m_n2);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CUseDlg, CDialog)
	//{{AFX_MSG_MAP(CUseDlg)
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_ADVISE, OnAdvise)
	ON_BN_CLICKED(IDC_UNADVISE, OnUnadvise)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CUseDlg message handlers

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

	// 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
	m_dwCookie = 0;
	HRESULT hr = m_spObj.CreateInstance( _T("Simple15.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;  // return TRUE  unless you set the focus to a control
}

// 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 CUseDlg::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 CUseDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CUseDlg::OnAdvise() 
{
		// 得到连接点容器接口
	CComQIPtr<IConnectionPointContainer> spContainer( m_spObj );
	if( !spContainer )
	{
		AfxMessageBox( _T("组件没有提供连接点功能") );
		return;
	}
		// 得到连接点接口
	spContainer->FindConnectionPoint(
		__uuidof(_IDispConnectEvents),
		&m_spCP );
	
	if( !m_spCP )
	{
		AfxMessageBox( _T("没有找到连接点接口") );
		return;
	}

//	CComPtr<IUnknown> spUnk;		//得到接受器接口
//	m_sink.QueryInterface( IID_IUnknown, (LPVOID *)&spUnk );	//m_sink是接受器对象
//	hr=spCP->Advise( pUnk, &m_dwCookie);		//连接，m_dwCookie 是接受器cookie

	// 上面这段程序，其实可以简化为：
	HRESULT hr = m_spCP->Advise( &m_sink, &m_dwCookie );
	if( FAILED( hr ) )
	{
		AfxMessageBox( _T("连接失败") );
	}

	m_sink.SetResultWnd( &m_edit );
	AfxMessageBox( _T("已经连接成功") );

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

void CUseDlg::OnUnadvise() 
{
	if( m_spCP )
	{
		m_spCP->Unadvise( m_dwCookie );
		m_spCP.Release();
	}
	AfxMessageBox( _T("已经断开连接") );

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

void CUseDlg::OnOK() 
{
	UpdateData();
	m_spObj->Add( m_n1, m_n2 );
}

void CUseDlg::OnCancel() 
{
	if( m_spCP )
		m_spCP->Unadvise( m_dwCookie );
	
	CDialog::OnCancel();
}