www.pudn.com > VoiceModem.zip > PHONE.C

 
#include "comdial.h" 
#include "resource.h" 
 
 
extern MYTAPI mytapi; 
extern HWND hTTYWnd; 
 
///////////////////////////////////////////////////////////////////// 
//	myphoneInitialize - mega function to retrieve all  
//		configuration information needed for initializing the  
//		phone device. 
//////////////////////////////////////////////////////////////////// 
int myphoneInitialize(HWND hWnd, HINSTANCE hInst) 
{ 
	LONG lrc; 
	PHONEEXTENSIONID extensions; 
 
	// initialize application use of phone device 
	while (phoneInitialize(&mytapi.hTAPIPhone, hInst,  
			mytapi.PhoneCallbackProc = (LINECALLBACK)MakeProcInstance((FARPROC)PhoneCallBackProc, hInst), 
			"TAPIProcess", &mytapi.dwNumPhones) == PHONEERR_REINIT) { 
		Sleep (5);			// sleep for five seconds 
		if (MessageBox(hWnd, "Telephony system is reinitializing - Click \ 
Cancel to abort", "Error", MB_RETRYCANCEL) ==IDCANCEL) 
			goto done; 
	} // end while (TAPI reinitializing) 
 
	// bool indicates lineInitialize called successfully 
	mytapi.bPhoneInitialized = TRUE; 
 
	// negotiate version of TAPI to use 
	lrc = phoneNegotiateAPIVersion(mytapi.hTAPIPhone, 0, WIN95TAPIVERSION,  
			WIN95TAPIVERSION, &mytapi.dwPhoneVersionToUse, &extensions); 
	if (lrc) 
		goto done; 
	 
	// get phone device caps 
	lrc = myphoneGetDevCaps (); 
	if (lrc) 
		goto done; 
 
	return 0; 
 
done: 
	// error!  clean up and return error code 
 
	myphoneShutdown(); 
 
	return lrc; 
 
} //end function (myphoneInitialize) 
///////////////////////////////////////////////////////////////////// 
//	myphoneOpen - open phone device 
//////////////////////////////////////////////////////////////////// 
int myphoneOpen(HWND hWnd, HINSTANCE hInst) 
{ 
	LONG lrc; 
 
	// open the phone device 
	lrc = phoneOpen(mytapi.hTAPIPhone, mytapi.dwPhone, &mytapi.hPhone, 
					mytapi.dwPhoneVersionToUse, 0, 0,  
					PHONEPRIVILEGE_OWNER); 
	if (lrc) 
		goto done; 
 
	// bool indicates lineOpen called successfully 
	mytapi.bPhoneopen = TRUE; 
 
	// success 
 
	return 0; 
 
done: 
	// error!  clean up and return error code 
 
	myphoneShutdown(); 
 
	return lrc; 
 
} // end procedure (telephony initialize) 
///////////////////////////////////////////////////////////////////// 
//	myphoneGetDevCaps - get PHONECAPS structure 
//////////////////////////////////////////////////////////////////// 
LONG myphoneGetDevCaps() 
{ 
	LONG lrc;	 
	DWORD dwsize; 
 
	// if space already allocated for structure, free it up 
	if (mytapi.bPhonedevcapsalloced) { 
		free (mytapi.pPhonedevcaps); 
		mytapi.bPhonedevcapsalloced = FALSE; 
	} 
 
	// allocate memory for structure 
	mytapi.pPhonedevcaps = (PHONECAPS *) calloc(1, sizeof(PHONECAPS)); 
	if (!mytapi.pPhonedevcaps) 
		return PHONEERR_NOMEM; 
	mytapi.bPhonedevcapsalloced = TRUE; 
	// set structure size 
	mytapi.pPhonedevcaps->dwTotalSize = sizeof(PHONECAPS); 
	do { 
		// get information into structure 
		lrc = phoneGetDevCaps(mytapi.hTAPIPhone, mytapi.dwPhone, mytapi.dwPhoneVersionToUse, 
					   0, mytapi.pPhonedevcaps); 
		// bomb out if error 
		if (lrc) { 
			free (mytapi.pPhonedevcaps); 
			mytapi.bPhonedevcapsalloced = FALSE; 
			return lrc; 
		} 
		dwsize = mytapi.pPhonedevcaps->dwNeededSize; 
		// reallocate and try again 
		if (mytapi.pPhonedevcaps->dwTotalSize < dwsize) { 
			free (mytapi.pPhonedevcaps); 
			mytapi.bPhonedevcapsalloced = FALSE; 
			mytapi.pPhonedevcaps = (PHONECAPS *) calloc(1, dwsize); 
			if (!mytapi.pPhonedevcaps) 
				return PHONEERR_NOMEM; 
			mytapi.bPhonedevcapsalloced = TRUE; 
			mytapi.pPhonedevcaps->dwTotalSize = dwsize; 
			continue; 
		} 
		break; 
	} while (TRUE); 
 
	return lrc; 
} 
///////////////////////////////////////////////////////////////////// 
//	phoneShutdown - mega functions to shut down use of phone device 
//////////////////////////////////////////////////////////////////// 
void myphoneShutdown() 
{ 
 
	// close line if open 
	if (mytapi.bPhoneopen) 
		phoneClose(mytapi.hPhone); 
	if (mytapi.bPhoneInitialized) 
		phoneShutdown(mytapi.hTAPIPhone); 
 
	// free up various structures if allocated 
	if (mytapi.bPhonedevcapsalloced) 
		free (mytapi.pPhonedevcaps); 
	// set flags to indicate that the structures are no longer 
	// allocated 
	mytapi.bLinedevcapsalloced = FALSE; 
	mytapi.bPhoneopen = FALSE; 
	mytapi.bPhoneInitialized = FALSE; 
 
} // end function (phoneShutdown) 
///////////////////////////////////////////////////////////////////// 
//	PhoneCallBackProc - message function for TAPI phone events 
//////////////////////////////////////////////////////////////////// 
void FAR PASCAL PhoneCallBackProc(DWORD dwDevice,DWORD dwMessage, 
           DWORD dwInstance,DWORD dwParam1,DWORD dwParam2,DWORD dwParam3) 
{ 
 
 
 
}