搂主,换个MSDN版本吧
Bool IsNetworkAlive(
LPDWORD lpdwFlags // Specifies the type of network connection
);
Parameters
lpdwFlags
Provides information on the type of network connection available when the return value is TRUE. The flags can be:
NETWORK_ALIVE_LAN
The computer has one or more LAN cards that are active.
NETWORK_ALIVE_WAN
The computer has one or more active RAS connections.
NETWORK_ALIVE_AOL
This flag is only valid in Windows 95 and Windows 98. Indicates the computer is connected to the America Online network.