下面为客户测试端四个函数的完整代码。
// MyExeDlg.cpp : implementation file
//
#include "stdafx.h"
#include "MyExe.h"
#include "MyExeDlg.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
using namespace MYPROJLib;
/////////////////////////////////////////////////////////////////////////////
// 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)
// No message handlers
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CMyExeDlg dialog
CMyExeDlg::CMyExeDlg(CWnd* pParent /*=NULL*/)
: CDialog(CMyExeDlg::IDD, pParent)
{
//{{AFX_DATA_INIT(CMyExeDlg)
// 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 CMyExeDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
//{{AFX_DATA_MAP(CMyExeDlg)
// NOTE: the ClassWizard will add DDX and DDV calls here
//}}AFX_DATA_MAP
}
BEGIN_MESSAGE_MAP(CMyExeDlg, CDialog)
//{{AFX_MSG_MAP(CMyExeDlg)
ON_WM_SYSCOMMAND()
ON_WM_PAINT()
ON_WM_QUERYDRAGICON()
ON_BN_CLICKED(IDC_BUTTON1, OnMyF1)
ON_BN_CLICKED(IDC_BUTTON2, OnMyF2)
ON_BN_CLICKED(IDC_BUTTON3, OnMyF3)
ON_BN_CLICKED(IDC_BUTTON4, OnMyF4)
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CMyExeDlg message handlers
BOOL CMyExeDlg::OnInitDialog()
{
CDialog::OnInitDialog();
// Add "About..." menu item to system menu.
// 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);
}
}
// 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
}
void CMyExeDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
if ((nID & 0xFFF0) == IDM_ABOUTBOX)
{
CAboutDlg dlgAbout;
dlgAbout.DoModal();
}
else
{
CDialog::OnSysCommand(nID, lParam);
}
}
// 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 CMyExeDlg::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 CMyExeDlg::OnQueryDragIcon()
{
return (HCURSOR) m_hIcon;
}
void CMyExeDlg::OnMyF1()
{
// TODO: Add your control notification handler code here
HRESULT hr=CoInitialize(NULL);
CLSID clsid;
hr=CLSIDFromProgID(OLESTR("MyProj.MyCom"),&clsid);
if(FAILED(hr))
{
AfxMessageBox("COM Failed");
return;
}
IMyCom *ptr = NULL;
hr=CoCreateInstance(clsid,NULL,CLSCTX_INPROC_SERVER,__uuidof(IMyCom),(LPVOID*)&ptr);
ptr->MyF1();
ptr->Release(); // 释放实例
CoUninitialize();
}
void CMyExeDlg::OnMyF2()
{
// TODO: Add your control notification handler code here
HRESULT hr=CoInitialize(NULL);
CLSID clsid;
hr=CLSIDFromProgID(OLESTR("MyProj.MyCom"),&clsid);
if(FAILED(hr))
{
AfxMessageBox("COM Failed");
return;
}
IMyCom *ptr = NULL;
hr=CoCreateInstance(clsid,NULL,CLSCTX_INPROC_SERVER,__uuidof(IMyCom),(LPVOID*)&ptr);
char str[32];
sprintf(str,"Len=%d",ptr->MyF2("abcdefg"));
AfxMessageBox(str);
ptr->Release();// 释放实例
CoUninitialize();
}
void CMyExeDlg::OnMyF3()
{
// TODO: Add your control notification handler code here
HRESULT hr=CoInitialize(NULL);
CLSID clsid;
hr=CLSIDFromProgID(OLESTR("MyProj.MyCom"),&clsid);
if(FAILED(hr))
{
AfxMessageBox("COM Failed");
return;
}
IMyCom *ptr = NULL;
hr=CoCreateInstance(clsid,NULL,CLSCTX_INPROC_SERVER,__uuidof(IMyCom),(LPVOID*)&ptr);
AfxMessageBox(ptr->MyF3("abcdefg"));
ptr->Release(); // 释放实例
CoUninitialize();
}
void CMyExeDlg::OnMyF4()
{
// TODO: Add your control notification handler code here
HRESULT hr=CoInitialize(NULL);
CLSID clsid;
hr=CLSIDFromProgID(OLESTR("MyProj.MyCom"),&clsid);
if(FAILED(hr))
{
AfxMessageBox("COM Failed");
return;
}
IMyCom *ptr = NULL;
hr=CoCreateInstance(clsid,NULL,CLSCTX_INPROC_SERVER,__uuidof(IMyCom),(LPVOID*)&ptr);
int x=8; char str[32];
sprintf(str,"x=%d,x+1=%d",x,ptr->MyF4(x));
AfxMessageBox(str);
ptr->Release();// 释放实例
CoUninitialize();
}
通过这个简单的例子，我们做了最简单的COM组件，及测试组件的客户端，在这里只是教大家如何用VC ATL做COM组件，在接下来这一篇里Developing COM Components using VC-ATL(2)将对COM的基本原理进行介绍，以及对这一例子的源代码进行剖析。
Developing COM Components using VC-ATL(1)完
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