1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37
|
|
unit UpperCaseAndLowerCase;
interface
uses
Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls;
type
TForm5 = class(TForm)
lbl1: TLabel;
edt1: TEdit;
lbl2: TLabel;
edt2: TEdit;
lbl3: TLabel;
edt3: TEdit;
procedure edt1Change(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;
var
Form5: TForm5;
implementation
{$R *.dfm}
procedure TForm5.edt1Change(Sender: TObject);
begin
edt3.Text:= UpperCase(edt1.text); // 字符串转换成大写
edt2.Text := LowerCase(edt1.Text); // 字符串转换成小写
end;
end.
|