procedure TForm1.Button1Click(Sender: TObject); var aLable: TLabel; i: Integer; begin for i := 0 to Self.ComponentCount - 1 do begin if Self.Components[i].ClassName = 'TLabel' then begin aLable := TLabel(Self.Components[i]); aLable.Caption := 'aaa'; end; end; end;
for i:=0 to ComponentCount-1 do if components[i] is TLable then showmessage((Components[i] as TLable).Name);
for i:=0 to form1.ControlCount-1 do begin if form1.Controls[i].ClassName='TLabel' then TLabel(form1.Controls[i]).Caption := '你自己的内容'; end;
var
aLable: TLabel;
i: Integer;
begin
for i := 0 to Self.ComponentCount - 1 do
begin
if Self.Components[i].ClassName = 'TLabel' then
begin
aLable := TLabel(Self.Components[i]);
aLable.Caption := 'aaa';
end;
end;
end;
if components[i] is TLable then
showmessage((Components[i] as TLable).Name);
begin
if form1.Controls[i].ClassName='TLabel' then
TLabel(form1.Controls[i]).Caption := '你自己的内容';
end;