the network is available or not

判断电脑是否联网:

#41:PC is connected to a network or not

If you want to know if the PC is connected to a network under MS Windows then you can call a GetSystemMetrics() function (Windows API) with SM_NETWORK parameter:

if (GetSystemMetrics(SM_NETWORK) AND $01 = $01) then
    <PC is attached to network>
else
    <PC is not attached to network>

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