142 lines
4.6 KiB
C++
142 lines
4.6 KiB
C++
/**INC+**********************************************************************/
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/* Header: vchannel.h */
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/* */
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/* Purpose: virtual channel interaction */
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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 __VCHANNEL_H_
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#define __VCHANNEL_H_
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#include <cchannel.h>
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//
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// Include the core (internal) virtual channel header
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// we need access to the structure pointed to by pInitHandle
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//
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#include "vchandle.h"
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#define NOTHING 0
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#define NON_V1_CONNECT 1
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#define V1_CONNECT 2
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BEGIN_EXTERN_C
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//
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// Virtual channel functions
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//
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VOID WINAPI VirtualChannelOpenEventEx(
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PVOID lpParam,
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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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VOID VCAPITYPE VirtualChannelInitEventProcEx(PVOID lpParam,
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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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BOOL VCAPITYPE MSTSCAX_VirtualChannelEntryEx(PCHANNEL_ENTRY_POINTS_EX pEntryPointsEx,
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PVOID pAxCtlInstance);
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END_EXTERN_C
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enum ChanDataState
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{
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//
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// For received items
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//
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dataIncompleteAssemblingChunks,
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dataReceivedComplete
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};
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//
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// Holds queued data that is to be sent/received
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//
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typedef struct tag_ChannelDataItem
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{
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//
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// Pointer to the data buffer
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// this buffer is stored in a BSTR
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// so it can be handed directly to the calling script
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//
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LPVOID pData;
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//
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// size of the buffer in bytes
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//
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DWORD dwDataLen;
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//
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// Current write pointer used during chunk reassembly
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//
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LPBYTE pCurWritePointer;
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ChanDataState chanDataState;;
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} CHANDATA, *PCHANDATA;
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typedef struct tag_chanInfo
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{
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DCACHAR chanName[CHANNEL_NAME_LEN + 1];
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DWORD dwOpenHandle;
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BOOL fIsValidChannel;
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LONG channelOptions;
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DCBOOL fIsOpen;
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HWND hNotifyWnd;
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//
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// Info about data item we are in the process of receiving
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//
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CHANDATA CurrentlyReceivingData;
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} CHANINFO, *PCHANINFO;
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//
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// Channel information
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//
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class CVChannels
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{
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public:
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CVChannels();
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~CVChannels();
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DCINT ChannelIndexFromOpenHandle(DWORD dwHandle);
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DCINT ChannelIndexFromName(PDCACHAR szChanName);
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DCBOOL SendDataOnChannel(DCUINT chanIndex, LPVOID pdata, DWORD datalength);
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DCBOOL HandleReceiveData(IN DCUINT chanIndex,
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IN LPVOID pdata,
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IN UINT32 dataLength,
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IN UINT32 totalLength,
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IN UINT32 dataFlags);
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VOID VCAPITYPE IntVirtualChannelInitEventProcEx(LPVOID pInitHandle,
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UINT event,
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LPVOID pData,
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UINT dataLength);
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VOID WINAPI IntVirtualChannelOpenEventEx(
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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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//Predicate, returns true if the VC entry function
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//has been called
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BOOL HasEntryBeenCalled() {return _pEntryPoints ? TRUE : FALSE;}
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PCHANINFO _pChanInfo;
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PCHANNEL_ENTRY_POINTS_EX _pEntryPoints;
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DWORD _dwConnectState;
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LPVOID _phInitHandle;
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UINT _ChanCount;
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HWND _hwndControl;
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};
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#endif //__VCHANNEL_H_
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