在開發(fā)來電防火墻或來電大頭貼時，首先就是要截獲來電，然后再加以分析，截獲來電的方法一般就是用TAPI提供的api函數(shù)，這些函數(shù)在tapi.h下．
１．初始化線路，并打開線路
? DWORD??????????? lineHandleCount;
???????? HLINE???????????? *lineHandles;
???????? HLINEAPP????????? lineApp;

if(lineInitialize(&lineApp,theApp.m_hInstance,(LINECALLBACK)LineCallback,L"Video",&lineHandleCount)==0)
?{
???? lineHandles = new HLINE[lineHandleCount];

??????? for(DWORD i = 0; i < lineHandleCount; i++)
??????? {

??????????? int rc;
??????????? DWORD ver;
??????????? LINEEXTENSIONID extensionID;

??????????? if( lineNegotiateAPIVersion( lineApp, i, 0x00010000, 0x00020000, &ver, &extensionID ) == 0 )
??????????? {
?????????????? rc = lineOpen( lineApp,i,&lineHandles[ i ],ver,0,(DWORD)0,LINECALLPRIVILEGE_MONITOR|LINECALLPRIVILEGE_OWNER,LINEMEDIAMODE_INTERACTIVEVOICE,NULL);
??????????? }
??????? }
?}

２.編寫回調(diào)函數(shù)，在這個函數(shù)里實現(xiàn)功能
VOID CALLBACK LineCallback(DWORD hDevice, DWORD dwMsg, DWORD dwCallbackInstance, DWORD dwParam1, DWORD dwParam2, DWORD dwParam3)
{
　//dwMsg是線路消息
?? //dwParam1,dwParam2是具體的事件
}

3.當(dāng)結(jié)束程序時，關(guān)閉線路
for ( DWORD i=0; i<lineHandleCount; i++ )
??????? lineClose( lineHandles[i]);

??????? delete[] lineHandles;
??????? lineShutdown( lineApp );

轉(zhuǎn)載于:https://www.cnblogs.com/randylee/archive/2007/03/21/683277.html

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