方法一：测试当前是否联网

If ConnectedToInternet(){
Msgbox, 64, WinInet.dll, ONLINE!
}
else{
Msgbox, 48, WinInet.dll, OFFLINE!
}
Return

ConnectedToInternet(flag=0x40) {
Return DllCall("Wininet.dll\InternetGetConnectedState", "Str", flag,"Int",0)
}

方法二（测试具体网页是否能通信）

URL := " "

If InternetCheckConnection(URL){
Msgbox, 64, WinInet.dll [%URL%], Connection Success!
}
else{
Msgbox, 48, WinInet.dll [%URL%], Connection Failed!
}
Return
; The Function

InternetCheckConnection(Url="",FIFC=1) {
Return DllCall("Wininet.dll\InternetCheckConnectionW", Str,Url, Int,FIFC, Int,0)
}

?