我首先假设你的20个edit都在form1上(为了方便,在其他Twincontrol上也可以的) procedure makenull; var I:integer; begin for I:=0 to form1.ComponentCount-1 do begin if (form1.Components[I] is TEdit) then begin (form1.Components[I] as TEdit).text:=''; end; end; end;
var i:integer; for i:=componentcount-1 downto 0 do if components[i] is tedit then iedit(components[i]).text:='';
var i:integer; for i:=componentcount-1 downto 0 do if components[i] is tedit then Tedit(components[i]).text:='';//---changed something.... ^_^
var i:integer; begin For i:=0 to controlcount-1 do begin Tedit(components[i]).text:=''; end; end;
这样也行 For i:=0 to controlcount-1 do begin Tedit(FindComponent('edit'+inttostr(i))).text:=''; end;
procedure makenull;
var I:integer;
begin
for I:=0 to form1.ComponentCount-1 do
begin
if (form1.Components[I] is TEdit) then
begin
(form1.Components[I] as TEdit).text:='';
end;
end;
end;
i:integer;
for i:=componentcount-1 downto 0 do
if components[i] is tedit then
iedit(components[i]).text:='';
i:integer;
for i:=componentcount-1 downto 0 do
if components[i] is tedit then
Tedit(components[i]).text:='';//---changed something.... ^_^
begin
For i:=0 to controlcount-1 do
begin
Tedit(components[i]).text:='';
end;
end;
For i:=0 to controlcount-1 do
begin
Tedit(FindComponent('edit'+inttostr(i))).text:='';
end;