到MSDN中找<br><br>RasGetConnectStatus<br>The RasGetConnectStatus function retrieves information on the current status of the specified remote access connection. An application can use this call to determine when an asynchronous RasDial call has completed. <br><br>DWORD RasGetConnectStatus(<br> HRASCONN hrasconn, // handle to RAS connection of interest<br> LPRASCONNSTATUS lprasconnstatus<br> // buffer to receive status data<br>);<br> <br>Parameters<br>hrasconn <br>Identifies the remote access connection for which to retrieve the status. This handle must have been obtained from RasDial or RasEnumConnections. <br>lprasconnstatus <br>Points to a RASCONNSTATUS structure that the function fills with status information. Before calling the function, an application must set the dwSize member of the structure to sizeof(RASCONNSTATUS) in order to identify the version of the structure being passed. <br>Return Values<br>If the function succeeds, the return value is zero.<br><br>If the function fails, the return value is a nonzero error value listed in the RAS header file or one of ERROR_BUFFER_TOO_SMALL or ERROR_NOT_ENOUGH_MEMORY. <br><br>QuickInfo<br> Windows NT: Requires version 3.1 or later.<br> Windows: Requires Windows 95 or later.<br> Windows CE: Requires version 1.0 or later.<br> Header: Declared in ras.h.<br> Import Library: Use rasapi32.lib.<br> Unicode: Implemented as Unicode and ANSI versions on Windows NT.<br><br>See Also<br>Remote Access Service Overview, RAS Server Administration Functions, RASCONNSTATUS, RasDial, RasEnumConnections <br><br><br>RasEnumConnections<br>The RasEnumConnections function lists all active RAS connections. It returns each connection's handle and phone-book entry name. <br><br>DWORD RasEnumConnections(<br> LPRASCONN lprasconn, // buffer to receive connections data<br> LPDWORD lpcb, // size in bytes of buffer<br> LPDWORD lpcConnections<br> // number of connections written to buffer<br>);<br> <br>Parameters<br>lprasconn <br>Points to a buffer that receives an array of RASCONN structures, one for each RAS connection. Before calling the function, an application must set the dwSize member of the first RASCONN structure in the buffer to sizeof(RASCONN) in order to identify the version of the structure being passed. <br>lpcb <br>Points to a variable that contains the size, in bytes, of the buffer specified by lprasconn. On return, the function sets this variable to the number of bytes required to enumerate the RAS connections. <br>lpcConnections <br>Points to a variable that the function sets to the number of RASCONN structures written to the buffer specified by lprasconn. <br>Return Values<br>If the function succeeds, the return value is zero.<br><br>If the function fails, the return value is a nonzero error value listed in the RAS header file or one of ERROR_BUFFER_TOO_SMALL or ERROR_NOT_ENOUGH_MEMORY. <br><br>Remarks<br>If a connection was made without specifying a phone-book entry name, the information returned for that connection will give the connection phone number preceded by ".". <br><br>QuickInfo<br> Windows NT: Requires version 3.1 or later.<br> Windows: Requires Windows 95 or later.<br> Windows CE: Requires version 1.0 or later.<br> Header: Declared in ras.h.<br> Import Library: Use rasapi32.lib.<br> Unicode: Implemented as Unicode and ANSI versions on Windows NT.<br><br>See Also<br>Remote Access Service Overview, RAS Server Administration Functions, RASCONN, RasEnumEntries, RasGetConnectStatus <br><br>