- , , "" type. "" :
type <' > = record
<' 1>:<>;
..................
<' N>:<>;
end;
var <' >:<' >;
:
' ' "";
record Delphi, , () ;
_i _i ' i- () , i=1..., ;
end Delphi, , .
:
Type
TPerson = record
FName: string [20];
LName: string [20];
day: integer;
month: integer;
year: integer;
address: string[50];
End;
TDate = record
day: integer; month: integer; year: integer;
End;
ϳ - ( ), :
Var
student: TPerson;
birthday: TDate;
, () - (), ' ' , . ,
ShowMessage ('': ', student.FName + #13 + ': ', student.address);
f_name (') address () - student.
- . ' , . , student var :
student: record
FName:string[20];
LName:string[20];
day:integer;
month:integer;
year:integer;
address:string[50];
End;
7.2. with
with -. with :
with ' do
Begin
( }
End;
:
' ' -;
with Delphi, , , end, ', ' .
,
student :record //
FName: string [30]; //
LName: string [20]; // '
address: string [50]; //
End;
Edit1, Edit2 Edit3 ,
student.FName:= Edit1.text;
student.LName:= Edit2.text;
student.address:= Edit3.text;
:
with student do begin
FName:= Edit1.text;
LName:= Edit2.text;
address:= Edit3.text;
End;
7.3.
. , - , , "". , :
|
|
|
| type rson = record FName: string [20]; LName: string[20]; address: string[50]; end; var f: file of TPerson; |
, TPerson.
. Assign ' . ( , ). ϳ .
, , , , . (. 8.1) , TOCinka.
. 7.1. ³
c ( Edit). ComboBox ( ).
ComboBox, Standard (. 7.2), -, , ' , .
. 7.2. ComboBox . 8.1 ComboBox.
7.1. ComboBox
| Name | ' . | ||
| Text | , - | ||
| Items | , | ||
| DropDownCount | ʳ , , | ||
| Left | ³ | ||
| Top | ³ | ||
| Height | ( -) | ||
| Width | |||
| Font | , | ||
| ParentFont | |||
, ' , , . , ObjectInspector Items, ( ) (. 7.3).
. 7.3. ComboBox1 ComboBox2
7.1.
˳ 7.1.
unit AddRecord;
interface
Uses
Windows, Messages, SysUtils, Classes,Graphics, Controls, Forms, Dialogs, StdCtrls, ExtCtrls;
Type
TForm1 = class(TForm)
Label1: TLabel;
Label2: TLabel;
|
|
|
Label3: TLabel;
Edit1: TEdit; //
ComboBox1: TComboBox; //
ComboBox2: TComboBox; //
RadioGroup1: TRadioGroup; //
Button1: TButton; //
Label3: TLabel;
Label4: TLabel;
procedure FormActivate(Sender: TObject);
procedure FormClose(Sender: TObject; var Action: TCloseAction);
procedure Button1Click(Sender: TObject);
Private
{ Private declarations }
Public
{ Public declarations }
End;
//
TBall = (NEZADOV, ZADOV, DOBRE, VIDMIN);
TOcinka=record //
NumberGroup: string [80]; // -
NazvaPredmt: string [100]; //
fName: string[40]; //
ball: TBall; //
End;
Var
Form1: TForm1;
f: file of TOcinka; //
Implementation
{$R *.DFM}
//
procedure TForm1.FormActivate(Sender: TObject);
Var
resp: word; //
Begin
AssignFile(f, 'c\ocinka.db');
{$I-}
Reset (f); //
Seek(f, FileSize(f)); //
{$I+}
if IOResult = 0 then Button1.Enabled:=TRUE
//
Else begin
resp:=MessageDlg(' .'
+ ' ?', mtlnformation,[mbYes,mbNo],0);
if resp = mrYes then
Begin
{$I-}
rewrite(f);
{$I+}
if IOResult = 0 then Button1.Enabled:=TRUE
else ShowMessage(' .');
End;
End;
End;
procedure TForm1.Button1Click(Sender: TObject); //
var ocinka: TOcinka;
Begin
with ocinka do begin
NumberGroup:= ComboBox1.Text;
NazvaPredmt:= ComboBox2.Text;
FName:= Edit1.Text;
case RadioGroup1.ItemIndex of
0: ball:= NEZADOV;
1: ball:= ZADOV;
2: ball:= DOBRE;
3:ball:= VIDMIN;
End;
End;
write(f,ocinka); //
End;
//
procedure TForm1.FormClose(Sender: TObject; var Action: TCloseAction);
Begin
CloseFile(f); //
End;
End.
TForm1.FormActivate . , . AppendFile, , , . Rewrite , Seek / . seek Filesize, ( ).
TForm1.Button1Click, (Button1), . NumberGroup NazvaPredmt , , Text - (omboBox1) (ComboBox2).
fName ( Edit1), ball RadioGroup1.
TForm1. FormClose TOCinka (TForm1.FormActivate TForm1.Button1lick), type . f .
, . , . items Add. , ( Tform1.FormActivate):
Form1.ComboBox1.Item.Add('-11');
Form1.ComboBox1.Item.Add('-12');
|
|
|
Form1.ComboBox1.Item.Add('-13');
Form1.ComboBox1.Item.Add('-11');
Form1.ComboBox1.Item.Add('-12');
7.5.
, . , . 7.4, 7.2, , , , , , , , , . Memo1.
. 7.2 .
Memo1 , ReadOnly ( , ) True. scrollBars ( ) Memo , . scrollBars ssNone, . , ScrollBars ssVertical.
7.2.
| RadioButton1. Checked | True | ||
| Label1.Enabled | False | ||
| ComboBox1. Enabled | False | ||
| Memo1. Readonly | True | ||
| Memo1. ScroiiBars | ssVertical | ||
- ComboBox1, - , . - items.
- ( ), Enabled ComboBox1 Label1 False.
- - (ComboBox1) . 䳿 Onclick RadioButton2 ComboBox1.
. 7.4. ³
˳ 7.2.
unit ReadRec;
Interface
Uses
Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs, StdCtrls;
Type
TForm1 = class(TForm)
RadioButton1: TRadioButton; //
RadioButton2: TRadioButton; //
//
Button1: TButton;
GroupBox1: TGroupBox;
Label1: TLabe1;
procedure Button1Click(Sender: TObject);
procedure RadioButton2Click(Sender: TObject);
procedure RadioButton1Click(Sender: TObject);
ComboBox1: TComboBox; //
//
Memo1: TMemo; // ,
//
private
{ Private declarations }
public
{ Public declarations }
End;
Var
Form1: TForm1;
Implementation
{$R *.DFM}
Type
TBall = (NEZADOV, ZADOV, DOBRE, VIDMIN); //
TOcinka=record //
NumberGroup: string [80]; // -
NazvaPredmt: string [100]; //
FName: string[40]; //
ball: TBall; //
End;
procedure TForm1.Button1Click(Sender: TObject);
|
|
|
Var
f: file of TOcinka; //
rec: TOcinka; // ,
n: integer; // - ,
st: string[80];
Begin
AssignFile(f,'c:\ocinka.db');
{$I-}
Reset (f); //
{$I-}
if IOResult < > 0 then begin
ShowMessage(' .');
Exit;
End;
//
if RadioButton2.Checked then
Memo1.Lines.Add('*** ' + ComboBox1.Text + ' ***');
n:= 0;
Memo1.Clear; // Memo
while not EOF(f) do begin
read(f, rec); //
if RadioButton1.Checked or
(rec.NumberGroup = ComboBox1.Text) then begin
n:= n + 1;
st:= rec.fName+ ', ' + rec.NazvaPredmt;
if RadioButton1.Checked then
st:= st + ', '+ rec.NumberGroup;
case rec.ball of
VIDMIN: st:= st+ ', ';
DOBRE:st:= st+ ', ';
ZADOV:st:= st+ ', ';
NEZADOV:st:= st+ ', ';
End;
Memo1.Lines.Add(st); end;
End;
CloseFile(f); if n = 0 then
ShowMessage(' .');
End;
//
procedure TForm1.RadioButton2Click(Sender: TObject);
Begin
Label1.Enabled:= True;
ComboBox1.Enabled:= True; // -
ComboBox1.SetFocus; // -
End;
//
procedure TForm1.RadioButton1Click(Sender: TObject);
Begin
Label1.Enabled:= False;
ComboBox1.Enabled:= False; // -
End;
End.
TForm1.Button1Click , . Memo1, , NumberGroup - , ComboBox1, RadioButton1.
Memo Memo1.Lines.Add(st), Add () Memo1.
:
1. ?
2. ?
3. ?
4. ?
˳:
.. Delphi. Delphi. 2006 . - 1152 .
2. .. Delphi 2006. : Delphi, , Win32 .NET, 2006 . - 1152 .
