在送你
procedure gbIp;//取得广播的ip地址,比如本机是192.168.0.1,这个函数得到192.168.0.255
var
i,j,iHead:Integer;
sHead,s:String;
ai:array [1..3] of integer;
begin
with form1 do
begin
LocalIP:=Powersock1.LocalIP;//本机ip
j:=1;
//取出。的位置
for i:=0 to Length(LocalIP) do
begin
if LocalIP[i]='.' then
begin
ai[j]:=i;
Inc(j);
end;
if j>3 then break;
end;
//shead为ip第一段
sHead:=Copy(LocalIp,1,ai[1]-1);
iHead:=StrToInt(sHead);
if iHead<128 then //A类网
begin
BroadCastIP:=sHead+'.255.255.255';//a类网的广播ip
end
else
begin
if iHead<192 then //B类网
begin
s:=Copy(LocalIP,1,ai[2]-1);
BroadCastIP:=s+'.255.255';//b类网的广播ip
end
else //C类网
begin
s:=Copy(LocalIP,1,ai[3]-1);
BroadCastIP:=s+'.255';//c类网的广播ip
end;
end;
end;
end;