61 lines
1.3 KiB
C
61 lines
1.3 KiB
C
/*++
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*
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* WOW v1.0
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*
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* Copyright (c) 1991, Microsoft Corporation
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*
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* WOWCOMM.C
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* WOW16 user resource services
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*
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* History:
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*
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* Created 28-Apr-1993 by Craig Jones (v-cjones)
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*
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* This file provides support for the Win 3.1 SetCommEventMask() API.
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* SetCommEventMask() returns a 16:16 ptr to the app so it can monitor
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* the event word & shadow MSR.
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*
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--*/
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#include <windows.h>
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#include <wowcomm.h>
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int WINAPI WOWCloseComm(int idComDev, LPDWORD lpdwEvts);
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int WINAPI WOWOpenComm(LPCSTR lpszPort, UINT cbInQ, UINT cbOutQ, DWORD dwEvts);
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int WINAPI ICloseComm(int idComDev)
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{
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int ret;
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DWORD dwEvts = 0;
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// we're really calling wu32CloseComm() here
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ret = WOWCloseComm(idComDev, (LPDWORD)&dwEvts);
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// free this 16:16 memory if it was alloc'd in IOpenComm()
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if(dwEvts) {
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GlobalDosFree((UINT)LOWORD(dwEvts));
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}
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return(ret);
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}
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int WINAPI IOpenComm(LPCSTR lpszPort, UINT cbInQ, UINT cbOutQ)
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{
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int ret;
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DWORD dwEvts;
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dwEvts = GlobalDosAlloc((DWORD)sizeof(COMDEB16));
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// we're really calling wu32OpenComm() here
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ret = WOWOpenComm(lpszPort, cbInQ, cbOutQ, dwEvts);
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// if OpenComm() failed - free the 16:16 memory
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if((ret < 0) && (dwEvts)) {
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GlobalDosFree((UINT)LOWORD(dwEvts));
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}
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return(ret);
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}
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