这样写看看:
unit Unit1;interfaceuses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls;type
TForm1 = class(TForm)
Button1: TButton;
Edit1: TEdit;
Edit2: TEdit;
Edit3: TEdit;
procedure Button1Click(Sender: TObject);
function Sumvalue(i:integer):integer;
private
{ Private declarations }
public
{ Public declarations }
end;var
Form1: TForm1;implementation{$R *.dfm}Function TForm1.Sumvalue(i:integer):integer;
begin
sumvalue:=118+strtoint(edit1.text);
end;procedure TForm1.Button1Click(Sender: TObject);
begin
Edit3.text:=inttostr(sumvalue(123));
end;end.
unit Unit1;interfaceuses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls;type
TForm1 = class(TForm)
Button1: TButton;
Edit1: TEdit;
Edit2: TEdit;
Edit3: TEdit;
procedure Button1Click(Sender: TObject);
function Sumvalue(i:integer):integer;
private
{ Private declarations }
public
{ Public declarations }
end;var
Form1: TForm1;implementation{$R *.dfm}Function TForm1.Sumvalue(i:integer):integer;
begin
sumvalue:=118+strtoint(edit1.text);
end;procedure TForm1.Button1Click(Sender: TObject);
begin
Edit3.text:=inttostr(sumvalue(123));
end;end.
procedure Button1Click(Sender: TObject); 的下面或Private里面, 或Public里面声明一下。函数头改为Function TForm1.Sumvalue(i:integer):integer;