442 lines
26 KiB
OpenEdge ABL
442 lines
26 KiB
OpenEdge ABL
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/****************************************************************************/
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/* Header: cchannel.h */
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/* */
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/* Purpose: Virtual Channel Client API */
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/* */
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/* Copyright(C) Microsoft Corporation 1999 */
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/* */
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/****************************************************************************/
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#ifndef H_CCHANNEL
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#define H_CCHANNEL
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/****************************************************************************/
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/* Include Virtual Channel Protocol header */
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/****************************************************************************/
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#include <pchannel.h>
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#ifdef _WIN32
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#define VCAPITYPE _stdcall
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#define VCEXPORT
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#else // _WIN32
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#define VCAPITYPE CALLBACK
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#define VCEXPORT __export
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#endif // _WIN32
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/****************************************************************************/
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/* Name: CHANNEL_INIT_EVENT_FN */
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/* */
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/* Purpose: */
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/* */
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/* This function is passed to MSTSC on VirtualChannelInit. It is called by */
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/* MSTSC to tell the application about interesting events. */
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/* */
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/* Returns: */
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/* */
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/* none */
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/* */
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/* Params: */
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/* */
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/* - pInitHandle - a handle uniquely identifying this connection */
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/* - event - the event that has occurred - see CHANNEL_EVENT_XXX below */
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/* - pData - data associated with the event - see CHANNEL_EVENT_XXX below */
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/* - dataLength - length of the data. */
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/* */
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/****************************************************************************/
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typedef VOID VCAPITYPE CHANNEL_INIT_EVENT_FN(LPVOID pInitHandle,
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UINT event,
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LPVOID pData,
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UINT dataLength);
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typedef CHANNEL_INIT_EVENT_FN FAR * PCHANNEL_INIT_EVENT_FN;
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typedef VOID VCAPITYPE CHANNEL_INIT_EVENT_EX_FN(LPVOID lpUserParam,
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LPVOID pInitHandle,
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UINT event,
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LPVOID pData,
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UINT dataLength);
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typedef CHANNEL_INIT_EVENT_EX_FN FAR * PCHANNEL_INIT_EVENT_EX_FN;
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/****************************************************************************/
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/* Events passed to VirtualChannelInitEvent */
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/****************************************************************************/
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/* Client initialized (no data) */
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#define CHANNEL_EVENT_INITIALIZED 0
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/* Connection established (data = name of Server) */
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#define CHANNEL_EVENT_CONNECTED 1
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/* Connection established with old Server, so no channel support */
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#define CHANNEL_EVENT_V1_CONNECTED 2
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/* Connection ended (no data) */
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#define CHANNEL_EVENT_DISCONNECTED 3
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/* Client terminated (no data) */
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#define CHANNEL_EVENT_TERMINATED 4
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/* Remote control is starting on this client */
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#define CHANNEL_EVENT_REMOTE_CONTROL_START 5
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/* Remote control is ending on this client */
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#define CHANNEL_EVENT_REMOTE_CONTROL_STOP 6
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/****************************************************************************/
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/* Name: CHANNEL_OPEN_EVENT_FN */
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/* */
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/* Purpose: */
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/* */
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/* This function is passed to MSTSC on VirtualChannelOpen. It is called by */
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/* MSTSC when data is available on the channel. */
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/* */
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/* Returns: */
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/* */
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/* none */
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/* */
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/* Params: */
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/* */
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/* - openHandle - a handle uniquely identifying this channel */
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/* - event - event that has occurred - see CHANNEL_EVENT_XXX below */
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/* - pData - data received */
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/* - dataLength - length of the data */
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/* - totalLength - total length of data written by the Server */
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/* - dataFlags - flags, zero, one or more of: */
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/* - 0x01 - beginning of data from a single write operation at the Server */
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/* - 0x02 - end of data from a single write operation at the Server. */
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/* */
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/****************************************************************************/
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typedef VOID VCAPITYPE CHANNEL_OPEN_EVENT_FN(DWORD openHandle,
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UINT event,
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LPVOID pData,
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UINT32 dataLength,
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UINT32 totalLength,
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UINT32 dataFlags);
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typedef CHANNEL_OPEN_EVENT_FN FAR * PCHANNEL_OPEN_EVENT_FN;
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typedef VOID VCAPITYPE CHANNEL_OPEN_EVENT_EX_FN(LPVOID lpUserParam,
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DWORD openHandle,
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UINT event,
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LPVOID pData,
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UINT32 dataLength,
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UINT32 totalLength,
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UINT32 dataFlags);
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typedef CHANNEL_OPEN_EVENT_EX_FN FAR * PCHANNEL_OPEN_EVENT_EX_FN;
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/****************************************************************************/
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/* Events passed to VirtualChannelOpenEvent */
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/****************************************************************************/
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/* Data received from Server (data = incoming data) */
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#define CHANNEL_EVENT_DATA_RECEIVED 10
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/* VirtualChannelWrite completed (pData - pUserData passed on
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VirtualChannelWrite) */
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#define CHANNEL_EVENT_WRITE_COMPLETE 11
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/* VirtualChannelWrite cancelled (pData - pUserData passed on
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VirtualChannelWrite) */
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#define CHANNEL_EVENT_WRITE_CANCELLED 12
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/****************************************************************************/
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/* Return codes from VirtualChannelXxx functions */
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/****************************************************************************/
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#define CHANNEL_RC_OK 0
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#define CHANNEL_RC_ALREADY_INITIALIZED 1
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#define CHANNEL_RC_NOT_INITIALIZED 2
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#define CHANNEL_RC_ALREADY_CONNECTED 3
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#define CHANNEL_RC_NOT_CONNECTED 4
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#define CHANNEL_RC_TOO_MANY_CHANNELS 5
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#define CHANNEL_RC_BAD_CHANNEL 6
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#define CHANNEL_RC_BAD_CHANNEL_HANDLE 7
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#define CHANNEL_RC_NO_BUFFER 8
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#define CHANNEL_RC_BAD_INIT_HANDLE 9
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#define CHANNEL_RC_NOT_OPEN 10
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#define CHANNEL_RC_BAD_PROC 11
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#define CHANNEL_RC_NO_MEMORY 12
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#define CHANNEL_RC_UNKNOWN_CHANNEL_NAME 13
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#define CHANNEL_RC_ALREADY_OPEN 14
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#define CHANNEL_RC_NOT_IN_VIRTUALCHANNELENTRY 15
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#define CHANNEL_RC_NULL_DATA 16
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#define CHANNEL_RC_ZERO_LENGTH 17
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#define CHANNEL_RC_INVALID_INSTANCE 18
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#define CHANNEL_RC_UNSUPPORTED_VERSION 19
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/****************************************************************************/
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/* Levels of Virtual Channel Support */
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/****************************************************************************/
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#define VIRTUAL_CHANNEL_VERSION_WIN2000 1
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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/****************************************************************************/
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/* Name: VirtualChannelInit */
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/* */
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/* Purpose: */
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/* */
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/* This function is called by the application to register the virtual */
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/* channels it wants to have access to. Note that this does not open the */
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/* channels, merely reserves the names for use by this application. This */
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/* function must be called before the Client connects to the Server, hence */
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/* it is recommended that it is called from the DLL's initialization */
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/* procedure. */
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/* */
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/* */
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/* On_return, the channels requested have been registered. However, other */
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/* MSTSC initialization may not yet have completed. The application */
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/* receives a VirtualChannelInitEvent callback with the "Client */
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/* initialized" event when all MSTSC initialization is complete. */
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/* */
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/* Returns: */
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/* */
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/* CHANNEL_RC_OK */
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/* CHANNEL_RC_ALREADY_INITIALIZED */
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/* CHANNEL_RC_ALREADY_CONNECTED */
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/* CHANNEL_RC_TOO_MANY_CHANNELS */
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/* CHANNEL_RC_NOT_IN_VIRTUALCHANNELENTRY */
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/* */
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/* Parameters */
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/* */
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/* - ppInitHandle (returned) - handle to pass to subsequent */
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/* VirtualChannelXxx calls */
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/* - pChannel - list of names registered by this application */
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/* - channelCount - number of channels registered. */
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/* - versionRequested - level of virtual channel support requested (one of */
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/* the VIRTUAL_CHANNEL_LEVEL_XXX parameters) */
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/* - pChannelInitEventProc - address of VirtualChannelInitEvent procedure */
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/* */
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/****************************************************************************/
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typedef UINT VCAPITYPE VIRTUALCHANNELINIT(
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LPVOID FAR * ppInitHandle,
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PCHANNEL_DEF pChannel,
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INT channelCount,
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ULONG versionRequested,
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PCHANNEL_INIT_EVENT_FN pChannelInitEventProc);
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typedef VIRTUALCHANNELINIT FAR * PVIRTUALCHANNELINIT;
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/****************************************************************************/
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/* Parameters for EX version */
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/* */
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/* pUserParam - user definded value that will be passed back */
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/* to addin in callbacks */
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/* */
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/* - pInitHandle - handle passed in in entry function */
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/* - pChannel - list of names registered by this application */
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/* - channelCount - number of channels registered. */
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/* - versionRequested - level of virtual channel support requested (one of */
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/* the VIRTUAL_CHANNEL_LEVEL_XXX parameters) */
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/* - pChannelInitEventProc - address of VirtualChannelInitEvent procedure */
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/* */
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/****************************************************************************/
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typedef UINT VCAPITYPE VIRTUALCHANNELINITEX(
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LPVOID lpUserParam,
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LPVOID pInitHandle,
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PCHANNEL_DEF pChannel,
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INT channelCount,
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ULONG versionRequested,
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PCHANNEL_INIT_EVENT_EX_FN pChannelInitEventProcEx);
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typedef VIRTUALCHANNELINITEX FAR * PVIRTUALCHANNELINITEX;
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/****************************************************************************/
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/* Name: VirtualChannelOpen */
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/* */
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/* Purpose: */
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/* */
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/* This function is called by the application to open a channel. It cannot */
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/* be called until a connection is established with a Server. */
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/* */
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/* Returns: */
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/* */
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/* CHANNEL_RC_OK */
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/* CHANNEL_RC_NOT_INITIALIZED */
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/* CHANNEL_RC_NOT_CONNECTED */
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/* CHANNEL_RC_BAD_CHANNEL_NAME */
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/* CHANNEL_RC_BAD_INIT_HANDLE */
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/* */
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/* Params: */
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/* */
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/* - pInitHandle - handle from VirtualChannelInit */
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/* */
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/* - pOpenHandle (returned) - handle to pass to subsequent */
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/* VirtualChannelXxx calls */
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/* - pChannelName - name of channel to open */
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/* - pChannelOpenEventProc - address of VirtualChannelOpenEvent procedure */
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/* */
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/****************************************************************************/
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typedef UINT VCAPITYPE VIRTUALCHANNELOPEN(
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LPVOID pInitHandle,
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LPDWORD pOpenHandle,
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PCHAR pChannelName,
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PCHANNEL_OPEN_EVENT_FN pChannelOpenEventProc);
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typedef VIRTUALCHANNELOPEN FAR * PVIRTUALCHANNELOPEN;
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typedef UINT VCAPITYPE VIRTUALCHANNELOPENEX(
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LPVOID pInitHandle,
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LPDWORD pOpenHandle,
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PCHAR pChannelName,
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PCHANNEL_OPEN_EVENT_EX_FN pChannelOpenEventProcEx);
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typedef VIRTUALCHANNELOPENEX FAR * PVIRTUALCHANNELOPENEX;
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/****************************************************************************/
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/* Name: VirtualChannelClose */
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/* */
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/* Purpose: */
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/* */
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/* This function is called to close a previously opened channel. */
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/* */
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/* Returns: */
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/* */
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/* CHANNEL_RC_OK */
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/* CHANNEL_RC_BAD_CHANNEL_HANDLE */
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/* */
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/* Params: */
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/* */
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/* - (EX version) pInitHandle - handle identifying the client instance */
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/* - openHandle - handle returned on VirtualChannelOpen */
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/* */
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/****************************************************************************/
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typedef UINT VCAPITYPE VIRTUALCHANNELCLOSE(DWORD openHandle);
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typedef VIRTUALCHANNELCLOSE FAR * PVIRTUALCHANNELCLOSE;
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typedef UINT VCAPITYPE VIRTUALCHANNELCLOSEEX(LPVOID pInitHandle,
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DWORD openHandle);
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typedef VIRTUALCHANNELCLOSEEX FAR * PVIRTUALCHANNELCLOSEEX;
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/****************************************************************************/
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/* Name: VirtualChannelWrite */
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/* */
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/* Purpose: */
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/* */
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/* This function is used to send data to the partner app on the Server. */
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/* */
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/* VirtualChannelWrite copies the data to one or more network buffers as */
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/* necessary. VirtualChannelWrite ensures that data is sent to the Server */
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/* on the right context. It sends all data on MS TC's Sender thread. */
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/* */
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/* VirtualChannelWrite is asynchronous - the VirtualChannelOpenEvent */
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/* procedure is called when the write completes. Until that callback is */
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/* made, the caller must not free or reuse the buffer passed on */
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/* VirtualChannelWrite. The caller passes a piece of data (pUserData) to */
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/* VirtualChannelWrite, which is returned on the VirtualChannelOpenEvent */
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/* callback. The caller can use this data to identify the write which has */
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/* completed. */
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/* */
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/* */
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/* Returns: */
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/* */
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/* CHANNEL_RC_OK */
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/* CHANNEL_RC_NOT_INITIALIZED */
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/* CHANNEL_RC_NOT_CONNECTED */
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/* CHANNEL_RC_BAD_CHANNEL_HANDLE */
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/* */
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/* Params: */
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/* - (EX version) pInitHandle - handle identifying the client instance */
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/* - openHandle - handle from VirtualChannelOpen */
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/* - pData - data to write */
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/* - datalength - length of data to write */
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/* - pUserData - user supplied data, returned on VirtualChannelOpenEvent */
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/* when the write completes */
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/* */
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/****************************************************************************/
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typedef UINT VCAPITYPE VIRTUALCHANNELWRITE(DWORD openHandle,
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LPVOID pData,
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ULONG dataLength,
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LPVOID pUserData);
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typedef VIRTUALCHANNELWRITE FAR * PVIRTUALCHANNELWRITE;
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typedef UINT VCAPITYPE VIRTUALCHANNELWRITEEX(LPVOID pInitHandle,
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DWORD openHandle,
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LPVOID pData,
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ULONG dataLength,
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LPVOID pUserData);
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typedef VIRTUALCHANNELWRITEEX FAR * PVIRTUALCHANNELWRITEEX;
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/****************************************************************************/
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/* Structure: CHANNEL_ENTRY_POINTS */
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/* */
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/* Description: Virtual Channel entry points passed to VirtualChannelEntry */
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/****************************************************************************/
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typedef struct tagCHANNEL_ENTRY_POINTS
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{
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DWORD cbSize;
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DWORD protocolVersion;
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PVIRTUALCHANNELINIT pVirtualChannelInit;
|
||
|
|
PVIRTUALCHANNELOPEN pVirtualChannelOpen;
|
||
|
|
PVIRTUALCHANNELCLOSE pVirtualChannelClose;
|
||
|
|
PVIRTUALCHANNELWRITE pVirtualChannelWrite;
|
||
|
|
} CHANNEL_ENTRY_POINTS, FAR * PCHANNEL_ENTRY_POINTS;
|
||
|
|
|
||
|
|
typedef struct tagCHANNEL_ENTRY_POINTS_EX
|
||
|
|
{
|
||
|
|
DWORD cbSize;
|
||
|
|
DWORD protocolVersion;
|
||
|
|
PVIRTUALCHANNELINITEX pVirtualChannelInitEx;
|
||
|
|
PVIRTUALCHANNELOPENEX pVirtualChannelOpenEx;
|
||
|
|
PVIRTUALCHANNELCLOSEEX pVirtualChannelCloseEx;
|
||
|
|
PVIRTUALCHANNELWRITEEX pVirtualChannelWriteEx;
|
||
|
|
} CHANNEL_ENTRY_POINTS_EX, FAR * PCHANNEL_ENTRY_POINTS_EX;
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
/****************************************************************************/
|
||
|
|
/* Name: VirtualChannelEntry */
|
||
|
|
/* */
|
||
|
|
/* Purpose: */
|
||
|
|
/* */
|
||
|
|
/* This function is provided by addin DLLS. It is called by MSTSC at */
|
||
|
|
/* initialization to tell the addin DLL the addresses of the */
|
||
|
|
/* VirtualChannelXxx functions. */
|
||
|
|
/* */
|
||
|
|
/* Returns: */
|
||
|
|
/* */
|
||
|
|
/* TRUE - everything OK */
|
||
|
|
/* FALSE - error, unload the DLL */
|
||
|
|
/* */
|
||
|
|
/* Parameters: */
|
||
|
|
/* */
|
||
|
|
/* - pVirtualChannelInit - pointers to VirtualChannelXxx functions */
|
||
|
|
/* - pVirtualChannelOpen */
|
||
|
|
/* - pVirtualChannelClose */
|
||
|
|
/* - pVirtualChannelWrite */
|
||
|
|
/* */
|
||
|
|
/* - (EX version) pInitHandle - value that identifies client instance */
|
||
|
|
/* this must be passed back when calling into */
|
||
|
|
/* the client. */
|
||
|
|
/****************************************************************************/
|
||
|
|
typedef BOOL VCAPITYPE VIRTUALCHANNELENTRY(
|
||
|
|
PCHANNEL_ENTRY_POINTS pEntryPoints);
|
||
|
|
|
||
|
|
typedef VIRTUALCHANNELENTRY FAR * PVIRTUALCHANNELENTRY;
|
||
|
|
|
||
|
|
typedef BOOL VCAPITYPE VIRTUALCHANNELENTRYEX(
|
||
|
|
PCHANNEL_ENTRY_POINTS_EX pEntryPointsEx,
|
||
|
|
PVOID pInitHandle);
|
||
|
|
|
||
|
|
typedef VIRTUALCHANNELENTRYEX FAR * PVIRTUALCHANNELENTRYEX;
|
||
|
|
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
}
|
||
|
|
#endif /* __cplusplus */
|
||
|
|
|
||
|
|
#endif /* H_CCHANNEL */
|