use5dlg.cpp

Thinkinc++English 电子书籍,英文版

// Use5Dlg.cpp : implementation file
//

#include "stdafx.h"
#include "Use5.h"
#include "Use5Dlg.h"

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

/////////////////////////////////////////////////////////////////////////////
// CUse5Dlg dialog

CUse5Dlg::CUse5Dlg(CWnd* pParent /*=NULL*/)
	: CDialog(CUse5Dlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CUse5Dlg)
		// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CUse5Dlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CUse5Dlg)
		// NOTE: the ClassWizard will add DDX and DDV calls here
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CUse5Dlg, CDialog)
	//{{AFX_MSG_MAP(CUse5Dlg)
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_BUTTON8, OnButton8)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CUse5Dlg message handlers

BOOL CUse5Dlg::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
	
	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 CUse5Dlg::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 CUse5Dlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CUse5Dlg::OnButton8() 
{
	// 由于在stdafx.h中 #import 没有使用 no_namespace 因此要使用命名空间
	// 命名空间叫 SIMPLE1Lib，这个名称是组件的 IDL 文件中 Library 指定的
	try
	{
		// 这次使用智能指针的构造函数启动组件，书写简单。
		// 但也有缺点，因为如果失败的话，不知道失败的原因

//		SIMPLE1Lib::IFunPtr spFun( L"Simple1.fun.1" );				// ProgID 方式
		SIMPLE1Lib::IFunPtr spFun( __uuidof(SIMPLE1Lib::Fun) );		// CLSID 方式

		long nSum = spFun->Add( 1, 2 );

		CString sMsg;
		sMsg.Format( _T("1+2=%d"), nSum );
		AfxMessageBox( sMsg );

		_bstr_t sCat = spFun->Cat( _T("Hello"), _T(" world") );
		AfxMessageBox( sCat );
	}
	catch( _com_error &e )
	{
		e;
		AfxMessageBox( _T("Error") );
	}
}