Use1Dlg.cpp
资源名称:comp5.rar [点击查看]
上传用户:sz6275
上传日期:2022-06-17
资源大小:80k
文件大小:5k
源码类别:
ActiveX/DCOM/ATL
开发平台:
Visual C++
- // Use1Dlg.cpp : implementation file
- //
- #include "stdafx.h"
- #include "Use1.h"
- #include "Use1Dlg.h"
- #ifdef _DEBUG
- #define new DEBUG_NEW
- #undef THIS_FILE
- static char THIS_FILE[] = __FILE__;
- #endif
- /////////////////////////////////////////////////////////////////////////////
- // CUse1Dlg dialog
- CUse1Dlg::CUse1Dlg(CWnd* pParent /*=NULL*/)
- : CDialog(CUse1Dlg::IDD, pParent)
- {
- //{{AFX_DATA_INIT(CUse1Dlg)
- // 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 CUse1Dlg::DoDataExchange(CDataExchange* pDX)
- {
- CDialog::DoDataExchange(pDX);
- //{{AFX_DATA_MAP(CUse1Dlg)
- // NOTE: the ClassWizard will add DDX and DDV calls here
- //}}AFX_DATA_MAP
- }
- BEGIN_MESSAGE_MAP(CUse1Dlg, CDialog)
- //{{AFX_MSG_MAP(CUse1Dlg)
- ON_WM_PAINT()
- ON_WM_QUERYDRAGICON()
- ON_BN_CLICKED(IDC_BUTTON1, OnButton1)
- ON_BN_CLICKED(IDC_BUTTON2, OnButton2)
- //}}AFX_MSG_MAP
- END_MESSAGE_MAP()
- /////////////////////////////////////////////////////////////////////////////
- // CUse1Dlg message handlers
- BOOL CUse1Dlg::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 CUse1Dlg::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 CUse1Dlg::OnQueryDragIcon()
- {
- return (HCURSOR) m_hIcon;
- }
- // 包含组件编译后给我们生成的 C 语言的接口描述文件
- #include "..Simple1simple1.h"
- #include "..Simple1Simple1_i.c"
- void CUse1Dlg::OnButton1()
- {
- ::CoInitialize( NULL );
- IUnknown * pUnk = NULL;
- IFun * pFun = NULL;
- HRESULT hr;
- try
- {
- hr = ::CoCreateInstance(
- CLSID_Fun,
- NULL,
- CLSCTX_INPROC_SERVER, // 以进程内组件 DLL 方式加载
- IID_IUnknown, // 想取得 IUnknown 接口指针
- (LPVOID *) &pUnk);
- if( FAILED( hr ) ) throw( _T("没注册吧?") );
- hr = pUnk->QueryInterface( // 从 IUnknown 得到其它接口指针
- IID_IFun, // 想取得 IFun 接口指针
- (LPVOID *)&pFun );
- if( FAILED( hr ) ) throw( _T("居然没有接口?") );
- long nSum;
- hr = pFun->Add( 1, 2, &nSum ); // IFun::Add()
- if( SUCCEEDED( hr ) )
- {
- CString sMsg;
- sMsg.Format( _T("1 + 2 = %d"), nSum );
- AfxMessageBox( sMsg );
- }
- BSTR s1 = ::SysAllocString( L"Hello" );
- BSTR s2 = ::SysAllocString( L" world" );
- BSTR s3 = NULL;
- hr = pFun->Cat( s1, s2, &s3 ); // IFun::Cat()
- if( SUCCEEDED( hr ) )
- {
- CString sMsg( s3 );
- AfxMessageBox( sMsg );
- }
- // IFun::Cat()最后一个参数是 [out] 方向属性,因此调用者要释放内存
- if( s3 ) ::SysFreeString( s3 );
- }
- catch( LPCTSTR lpErr )
- {
- AfxMessageBox( lpErr );
- }
- if( pUnk ) pUnk->Release();
- if( pFun ) pFun->Release();
- ::CoUninitialize();
- }
- // 包含 CComBSTR 需要使用的头文件
- #include <atlbase.h>
- void CUse1Dlg::OnButton2()
- {
- ::CoInitialize( NULL );
- IFun * pFun = NULL;
- HRESULT hr;
- try
- {
- hr = ::CoCreateInstance(
- CLSID_Fun,
- NULL,
- CLSCTX_INPROC_SERVER,
- IID_IFun, // 不再经过 IUnknown, 直接想得到 IFun 接口指针
- (LPVOID *) &pFun);
- if( FAILED( hr ) ) throw( _T("没注册吧或没有接口?") );
- long nSum;
- hr = pFun->Add( 1, 2, &nSum );
- if( SUCCEEDED( hr ) )
- {
- CString sMsg;
- sMsg.Format( _T("1 + 2 = %d"), nSum );
- AfxMessageBox( sMsg );
- }
- CComBSTR s1( "Hello" ); // 不再使用 API 方式操作 BSTR
- CComBSTR s2( " world" ); // 使用 CComBSTR 的包装类比较简单,并且
- CComBSTR s3; // 最大的好处是不用咱们自己来释放
- hr = pFun->Cat( s1, s2, &s3 );
- if( SUCCEEDED( hr ) )
- {
- CString sMsg( s3 );
- AfxMessageBox( sMsg );
- }
- }
- catch( LPCTSTR lpErr )
- {
- AfxMessageBox( lpErr );
- }
- if( pFun ) pFun->Release();
- ::CoUninitialize();
- }