home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Tricks of the Windows Gam…ming Gurus (2nd Edition)
/
Disc2.iso
/
msdn_vcb
/
samples
/
vc98
/
sdk
/
com
/
tutsamp
/
conserve
/
connect.h
< prev
next >
Wrap
C/C++ Source or Header
|
1997-08-05
|
9KB
|
260 lines
/*+==========================================================================
File: CONNECT.H
Summary: Include file declaring COM object classes and constants for
managing the connection points (and their connections)
exposed by the connectable objects in the CONSERVE server.
For a comprehensive tutorial code tour of this module's
contents and offerings see the tutorial CONSERVE.HTM
file. For more specific technical details on the internal
workings see the comments dispersed throughout the module's
source code.
Functions: .
Classes: COEnumConnectionPoints, COConnectionPoint, and
COEnumConnections.
Origin: 6-3-96: atrent - Created for the CONSERVE Tutorial
Code Sample.
----------------------------------------------------------------------------
This file is part of the Microsoft COM Tutorial Code Samples.
Copyright (C) Microsoft Corporation, 1997. All rights reserved.
This source code is intended only as a supplement to Microsoft
Development Tools and/or on-line documentation. See these other
materials for detailed information regarding Microsoft code samples.
THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY
KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
PARTICULAR PURPOSE.
==========================================================================+*/
#if !defined(CONNECT_H)
#define CONNECT_H
#ifdef __cplusplus
// An enumeration giving symbol names array indexes of the connection
// points offered by the DllSndBall component in this server.
enum
{
CONNPOINT_BALLSINK = 0
};
enum
{
// The maximum number of connection points offered by the DllSndBall
// component in this CONSERVE server. The number of items in the
// connection point enumeration above.
MAX_CONNECTION_POINTS = 1,
// A constant for the number of connections to add to the allocation
// of the dynamic connection array.
ALLOC_CONNECTIONS = 8,
// The start value for the connection key (cookie) counter.
COOKIE_START_VALUE = 400
};
/*O+O+++O+++O+++O+++O+++O+++O+++O+++O+++O+++O+++O+++O+++O+++O+++O+++O+++O+++O
ObjectClass: COEnumConnectionPoints
Summary: COM object class for enumerating the Connection Points of
offered by a connectable object.
Interfaces: IUnknown
Standard interface providing COM object features.
IEnumConnectionPoints
Interface for connection point enumeration.
Aggregation: COEnumConnectionPoints COM Objects are not aggregatable.
O---O---O---O---O---O---O---O---O---O---O---O---O---O---O---O---O---O---O-O*/
class COEnumConnectionPoints : public IEnumConnectionPoints
{
public:
// Main Object Constructor & Destructor.
COEnumConnectionPoints(IUnknown* pHostObj);
~COEnumConnectionPoints(void);
// A general method for initializing this newly created object.
// Creates any subordinate arrays, structures, or objects.
HRESULT Init(
ULONG cConnPts,
IConnectionPoint** paConnPts,
ULONG iEnumIndex);
// IUnknown methods. Main object, non-delegating.
STDMETHODIMP QueryInterface(REFIID, PPVOID);
STDMETHODIMP_(ULONG) AddRef(void);
STDMETHODIMP_(ULONG) Release(void);
// IEnumConnectionPoints methods.
STDMETHODIMP Next(ULONG, IConnectionPoint**, ULONG*);
STDMETHODIMP Skip(ULONG);
STDMETHODIMP Reset(void);
STDMETHODIMP Clone(IEnumConnectionPoints**);
private:
// Private data of COEnumConnectionPoints COM objects.
// Main Object reference count.
ULONG m_cRefs;
// IUnknown pointer to host COM object being enumerated.
IUnknown* m_pHostObj;
// Connection Point index variable.
ULONG m_iEnumIndex;
// Number of Connection Points being enumerated.
ULONG m_cConnPts;
// Allocated array of Connection Point interface pointers.
IConnectionPoint** m_paConnPts;
};
typedef COEnumConnectionPoints* PCOEnumConnectionPoints;
/*O+O+++O+++O+++O+++O+++O+++O+++O+++O+++O+++O+++O+++O+++O+++O+++O+++O+++O+++O
ObjectClass: COConnectionPoint
Summary: Connection Point COM object class. Implements a native
IConnectionPoint interface. The Advise, Unadvise, and
EnumConnections methods use the CThreaded OwnThis mechanism
to provide thread-safe mutually exclusive access to this
connection point object.
Interfaces: IUnknown
Standard interface providing COM object features.
IConnectionPoint
Interface for connection point features.
Aggregation: COConnectionPoint COM Objects are not aggregatable.
O---O---O---O---O---O---O---O---O---O---O---O---O---O---O---O---O---O---O-O*/
class COConnectionPoint : public IConnectionPoint, public CThreaded
{
public:
// Main Object Constructor & Destructor.
COConnectionPoint(IUnknown* pHostObj);
~COConnectionPoint(void);
// A general method for initializing this newly created object.
// Creates any subordinate arrays, structures, or objects.
HRESULT Init(REFIID riid);
// IUnknown methods. Main object, non-delegating.
STDMETHODIMP QueryInterface(REFIID, PPVOID);
STDMETHODIMP_(ULONG) AddRef(void);
STDMETHODIMP_(ULONG) Release(void);
// IConnectionPoint methods.
STDMETHODIMP GetConnectionInterface(IID*);
STDMETHODIMP GetConnectionPointContainer(IConnectionPointContainer**);
STDMETHODIMP Advise(IUnknown*, DWORD*);
STDMETHODIMP Unadvise(DWORD);
STDMETHODIMP EnumConnections(IEnumConnections**);
private:
// Private utility methods of COConnectionPoint.
HRESULT GetSlot(UINT* puiFreeSlot);
HRESULT FindSlot(DWORD dwCookie, UINT* puiSlot);
// Private data of COConnectionPoint COM objects.
// Main Object reference count.
ULONG m_cRefs;
// IUnknown pointer to host COM object offering this connection point.
IUnknown* m_pHostObj;
// The IID of the sink interface associated with this connection point.
IID m_iidSink;
// The current connection cookie (key) counter.
DWORD m_dwNextCookie;
// The current number of live sink connections to this connection point.
UINT m_cConnections;
// The current maximum index into the dynamic connection array.
UINT m_uiMaxIndex;
// The dynamic array of sink connections to this connection point.
CONNECTDATA* m_paConnections;
};
typedef COConnectionPoint* PCOConnectionPoint;
/*O+O+++O+++O+++O+++O+++O+++O+++O+++O+++O+++O+++O+++O+++O+++O+++O+++O+++O+++O
ObjectClass: COEnumConnections
Summary: COM object class for enumerating the connections of
a connection point of a connectable object.
Interfaces: IUnknown
Standard interface providing COM object features.
IEnumConnections
Interface for connection enumeration features.
Aggregation: COEnumConnections COM Objects are not aggregatable.
O---O---O---O---O---O---O---O---O---O---O---O---O---O---O---O---O---O---O-O*/
class COEnumConnections : public IEnumConnections
{
public:
// Main Object Constructor & Destructor.
COEnumConnections(IUnknown* pHostObj);
~COEnumConnections(void);
// A general method for initializing this newly created object.
// Creates any subordinate arrays, structures, or objects.
HRESULT Init(
ULONG cConnections,
CONNECTDATA* paConnections,
ULONG iEnumIndex);
// IUnknown methods. Main object, non-delegating.
STDMETHODIMP QueryInterface(REFIID, PPVOID);
STDMETHODIMP_(ULONG) AddRef(void);
STDMETHODIMP_(ULONG) Release(void);
// IEnumConnections methods.
STDMETHODIMP Next(ULONG, CONNECTDATA*, ULONG*);
STDMETHODIMP Skip(ULONG);
STDMETHODIMP Reset(void);
STDMETHODIMP Clone(IEnumConnections**);
private:
// Private data of COEnumConnections COM objects.
// Main Object reference count.
ULONG m_cRefs;
// IUnknown pointer to host connection point COM object being
// enumerated.
IUnknown* m_pHostObj;
// Connection index variable.
ULONG m_iEnumIndex;
// Number of Connections being enumerated.
ULONG m_cConnections;
// Allocated array of live Connections only.
CONNECTDATA* m_paConnections;
};
typedef COEnumConnections* PCOEnumConnections;
#endif // __cplusplus
#endif // CONNECT_H