实现IE脱机工作和联机工作的切换

function SetOffline:Boolean; //设定浏览器为离线状态
var
ConInfo:INTERNET_CONNECTED_INFO;
begin
ConInfo.dwConnectedState := INTERNET_STATE_DISCONNECTED_BY_USER;
ConInfo.dwFlags := ISO_FORCE_DISCONNECTED;
InternetSetOption(nil, INTERNET_OPTION_CONNECTED_STATE, @ConInfo, sizeof(ConInfo));
result:=True;
end;

function SetOnline:Boolean; //设定浏览器为联机状态
var
ConInfo:INTERNET_CONNECTED_INFO;
begin
ConInfo.dwConnectedState := INTERNET_STATE_CONNECTED;
ConInfo.dwFlags := 0;
InternetSetOption(nil, INTERNET_OPTION_CONNECTED_STATE, @ConInfo, sizeof(ConInfo));
result:=True;
end;

记得要引用wininet。