问一下，论坛搜索的时候怎么搜索多个关键字啊？还有如何判断edit1,edit2,edit3是否都为空

[st_snake_china]

？

[things]

1.纳闷中...

2.
if (edit1.text = '') and (edit2.text = '') and (edit3.text = '') then
showmessage('都为空！');

[tongdings]

1.跟一般的搜索算法一样啊。

2.
if (edit1.text = '') and (edit2.text = '') and (edit3.text = '') then
showmessage('都为空！');
--------------------------------------------------------------------
if (length(edit1.text)>0) and (length(edit2.text)>0) and (length(edit3.text)>0) then
showmessage('都为空！');

[tccb]

for i:=0 to form1.ComponentCount -1 do
begin
if (form1.Components[i] is TEdit) then
begin
if Length(TEdit(form1.Components[i]).text) > 0 then
showmessage(form1.Components[i].Name + '不为空！');
end;
end;