Сущность технологии СОМ. Библиотека программиста   ::   Бокс Дональд

idl»;

HRESULT OnNewUser([in, string] const OLECHAR *pwszUser);

HRESULT OnUserLeft([in, string] const OLECHAR *pwszUser);

HRESULT OnNewStatement([in, string] const OLECHAR *pwszUser,

[in, string] const OLECHAR *pwszStmnt);

}

[

uuid(5223A052-2441-11d1-AF4F-0060976AA886),

object

]

interface IChatSessionManager : IUnknown

{

import «objidl.idl»;

HRESULT GetSessionNames([out] IEnumString **ppes);

HRESULT FindSession([in, string] const OLECHAR *pwszName,

[in] BOOL bDontCreate,

[in] BOOL bAllowAnonymousAccess,

[out] IChatSession **ppcs);

HRESULT DeleteSession([in, string] const OLECHAR *pwszName);

}

cpp_quote(«DEFINE_GUID(CLSID_ChatSession,0x5223a053,0x2441,»)

cpp_quote(«0x11d1,0xaf,0x4f,0x0,0x60,0x97,0x6a,0xa8,0x86);»)

client.cpp



/////////////////////////////////////////////////////

//

// client.cpp

//

// Copyright 1997, Don Box/Addison Wesley

//

// This code accompanies the book "The Component

// Object Model" from Addison Wesley. Blah blah blah

//

//

#define _WIN32_WINNT 0x403

#include

#include

#include

#include

#include «../include/COMChat.h»

#include «../include/COMChat_i.c»

void Error(HRESULT hr, const char *psz)

{

printf(«%s failed and returned 0x%x\n», psz, hr);

}

// utility function to print command line syntax

int Usage(void)

{

const char *psz =

«usage: client.exe \n»

« where:\n»

« action = /sessions|/chat:session|/delete:session\n»

« user = /user:domain\\user /password:pw |»

«/anonymous | \n»

« host = /host:hostname | \n»;

printf(psz);

return -1;

}

// utility function for printing a list of strings

void PrintAllStrings(IEnumString *pes)

{

enum { CHUNKSIZE = 64 };

OLECHAR *rgpwsz[CHUNKSIZE];

ULONG cFetched;

HRESULT hr;

do

{

hr = pes->Next(CHUNKSIZE, rgpwsz, &cFetched);

if (SUCCEEDED(hr))

{

for (ULONG i = 0; i < cFetched; i++)

if (rgpwsz[i])

{

wprintf(L"%s\n", rgpwsz[i]);

CoTaskMemFree(rgpwsz[i]);