以下代码的意思是什么?procedureFormClose(Sender:TObject;varAction:TCloseAction);private{Privatedeclarations}public{Publicdeclarations}end;varForm1:TForm1;implementation{$R*.dfm}procedureTForm1.Button1Click(Sender:TObject);begi

Question

以下代码的意思是什么?
procedure FormClose(Sender: TObject; var Action: TCloseAction);
private
{ Private declarations }
public
{ Public declarations }
end;
var
Form1: TForm1;
implementation
{$R *.dfm}
procedure TForm1.Button1Click(Sender: TObject);
begin
with SQLConnection do
begin
Close;
Params.Values['HostName']:=HostName.Text;
Params.Values['UserName']:=User_Name.Text;
Params.Values['Password']:=Password.Text;
Params.Values['Database']:=Database.Text;
try
Connected:=True;
Statusbar1.Panels[0].Text:='Connect OK';
ButtonGo.Enabled:=True;
except
MessageDlg('Connect Error',mtError,[mbyes],0);
end;
end;
end;
procedure TForm1.ButtonGoClick(Sender: TObject);
begin
with SQLClientDataSet do
begin
Close;
CommandText:=ESQL.Text;
Open;
end;
end;
procedure TForm1.FormClose(Sender: TObject; var Action: TCloseAction);
begin
SQLConnection.Close;
end;
end.
我不明白的是user.text,password.text的内容怎么指定的?

Answer 1

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