如何得知用户 拔开网线 了？(50分)

N

nzfsoft

Unregistered / Unconfirmed

GUEST, unregistred user!

• 2002-12-27

• #1

如何可以侦测用户 拔开了网线。

 

S

sgs125

Unregistered / Unconfirmed

GUEST, unregistred user!

• 2002-12-27

• #2

procedure TForm1.Button1Click(Sender: TObject);<br>begin<br>&nbsp; if GetSystemMetrics(SM_NETWORK) AND $01 = $01 then<br>&nbsp; &nbsp; ShowMessage('Machine is attached to network') else<br>&nbsp; &nbsp; ShowMessage('Machine is not attached to network');<br>end;

 

N

nzfsoft

Unregistered / Unconfirmed

GUEST, unregistred user!

• 2002-12-27

• #3

<br>不行。楼上，你亲自试过了吗？<br>这段程序我早就有了。我试过了。不行。<br>它检测连接永远是好的。<br>

 

J

jack_deng

Unregistered / Unconfirmed

GUEST, unregistred user!

• 2002-12-27

• #4

这个没有办法的，你不可能写一个线程不停的检测网络是否连通吧

 

B

BDFan

Unregistered / Unconfirmed

GUEST, unregistred user!

• 2002-12-27

• #5

可是Windows XP 里拔掉网线马上就能检测到

 

M

Milpas

Unregistered / Unconfirmed

GUEST, unregistred user!

• 2002-12-27

• #6

局域网连接和拨号上网连接的判断方法是不同的

 

N

nzfsoft

Unregistered / Unconfirmed

GUEST, unregistred user!

• 2002-12-27

• #7

为什么？<br>在Win2000与XP中。用户一拔掉网线，系统就可以知道了。

 

X

xialin2

Unregistered / Unconfirmed

GUEST, unregistred user!

• 2002-12-27

• #8

关注

 

T

Town

Unregistered / Unconfirmed

GUEST, unregistred user!

• 2002-12-27

• #9

up

 

D

doll_paul

Unregistered / Unconfirmed

GUEST, unregistred user!

• 2002-12-27

• #10

gz

 

N

nzfsoft

Unregistered / Unconfirmed

GUEST, unregistred user!

• 2002-12-27

• #11

UP

 

C

caidao

Unregistered / Unconfirmed

GUEST, unregistred user!

• 2002-12-31

• #12

up

 

N

nzfsoft

Unregistered / Unconfirmed

GUEST, unregistred user!

• 2003-01-02

• #13

UP

 

N

netabloid

Unregistered / Unconfirmed

GUEST, unregistred user!

• 2003-01-06

• #14

学习

 

H

hfghfghfg

Unregistered / Unconfirmed

GUEST, unregistred user!

• 2003-01-06

• #15

随便用一个socket

 

大

大梦

Unregistered / Unconfirmed

GUEST, unregistred user!

• 2003-01-06

• #16

up<br>

 

N

nzfsoft

Unregistered / Unconfirmed

GUEST, unregistred user!

• 2003-01-06

• #17

T

 

B

boyface

Unregistered / Unconfirmed

GUEST, unregistred user!

• 2003-01-08

• #18

大概是和信号有关的吧？<br>学习。。。

 

N

nzfsoft

Unregistered / Unconfirmed

GUEST, unregistred user!

• 2003-01-08

• #19

T

 

没

没理头号

Unregistered / Unconfirmed

GUEST, unregistred user!

• 2003-01-10

• #20

在Win2000与XP中。用户一拔掉网线，系统就可以知道了。<br>/////////////////////////////////////<br>这个我也想知道，不过我想它机制大概也只能是定时向一个机器发送信息测试