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| unit stud;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls, Buttons, ExtCtrls, ComCtrls;
type
Student = record
fam,nam,otc : string[15];
sex : char;
datebd : TDateTime;
kurs : byte;
group : string[8];
spec : string[30];
end;
TForm1 = class(TForm)
Panel1: TPanel;
Label1: TLabel;
Label2: TLabel;
Label3: TLabel;
Label4: TLabel;
Label5: TLabel;
Panel2: TPanel;
Edit1: TEdit;
Edit2: TEdit;
Edit3: TEdit;
Edit4: TEdit;
Edit5: TEdit;
RadioGroup1: TRadioGroup;
Label6: TLabel;
Label7: TLabel;
Label8: TLabel;
Edit6: TEdit;
Edit7: TEdit;
Edit8: TEdit;
BitBtn1: TBitBtn;
BitBtn2: TBitBtn;
BitBtn3: TBitBtn;
BitBtn4: TBitBtn;
BitBtn5: TBitBtn;
BitBtn6: TBitBtn;
StatusBar1: TStatusBar;
BitBtn7: TBitBtn;
BitBtn8: TBitBtn;
GroupBox1: TGroupBox;
BitBtn9: TBitBtn;
BitBtn10: TBitBtn;
BitBtn11: TBitBtn;
ComboBox1: TComboBox;
Edit9: TEdit;
SaveDialog1: TSaveDialog;
procedure VvodZap;
function Vozrast(v : TDateTime): string;
procedure FormCreate(Sender: TObject);
procedure BitBtn4Click(Sender: TObject);
procedure FormDestroy(Sender: TObject);
procedure BitBtn1Click(Sender: TObject);
procedure BitBtn2Click(Sender: TObject);
procedure BitBtn5Click(Sender: TObject);
procedure BitBtn3Click(Sender: TObject);
procedure BitBtn6Click(Sender: TObject);
procedure BitBtn7Click(Sender: TObject);
procedure BitBtn8Click(Sender: TObject);
procedure BitBtn9Click(Sender: TObject);
procedure Button1Click(Sender: TObject);
procedure Edit1Change(Sender: TObject);
procedure Edit2Change(Sender: TObject);
procedure Edit3Change(Sender: TObject);
procedure Edit4Change(Sender: TObject);
procedure Edit5Change(Sender: TObject);
procedure Edit8Change(Sender: TObject);
procedure Edit7Change(Sender: TObject);
procedure Edit6Change(Sender: TObject);
procedure BitBtn10Click(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;
var
Form1: TForm1;
std,st_temp: Student;
F,temp: file of student;
kol_zap,i,p,x,m:integer;
implementation
{$R *.dfm}
function TForm1.Vozrast(v : TDateTime): string;
var
g : TDateTime;
Year, Month, Day : word;
ss : string;
begin
g:=Date-v;
DecodeDate(g,Year,Month,Day);
Year:=Year-1900;
Month:=Month-1;
ss:=IntToStr(Year);
case Year of
1,21,31,41,51,61 : ss:=ss+' год ';
2,3,4,22,23,24,32,33,34,42,43,44,52,53,54,62,63,64 :
ss:=ss+' года ';
5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,25,26,27,28,29,30,35,36,
37,38,39,40,45,46,47,48,49,50,55,56,57,58,59,60,65,66,67,68,69,70 :
ss:=ss+' лет ';
end;
if Month <> 0 then
begin
ss:=ss+' '+IntToStr(Month);
case Month of
1 : ss:=ss+' месяц ';
2,3,4 : ss:=ss+' месяца ';
5,6,7,8,9,10,11,12 : ss:=ss+' месяцев ';
end;
end;
Vozrast:=ss;
end;
procedure tform1.VvodZap;
begin
read(f,std);
Edit1.Text:=std.fam;
Edit2.Text:=std.nam;
Edit3.Text:=std.otc;
Edit4.Text:=datetimetostr(std.datebd);
Edit5.Text:=Vozrast(std.datebd);
case std.sex of
'м': Radiogroup1.ItemIndex:=0;
'ж': Radiogroup1.ItemIndex:=1;
end;
case std.kurs of
1: Edit6.Text:='первый';
2: Edit6.Text:='второй';
3: Edit6.Text:='третий';
4: Edit6.Text:='четвертый';
5: Edit6.Text:='пятый';
end;
Edit7.Text:=std.group;
Edit8.Text:=std.spec;
end;
procedure TForm1.FormCreate(Sender: TObject);
begin
bitbtn1.enabled:=false;
bitbtn2.enabled:=false;
Assignfile(f,'spis_rec.dat');
reset(f);
VvodZap;
kol_zap:=FileSize(F);
StatusBar1.Panels[0].Text:='В файле всего '+IntToStr(kol_Zap)+' записей';
//closefile(f);
i:=0;
end;
procedure TForm1.BitBtn4Click(Sender: TObject);
begin
bitbtn1.enabled:=true;
bitbtn2.enabled:=true;
if not eof(f) then begin
seek(f,i+1);
VvodZap;
i:=i+1; end;
if eof(f) then begin
bitbtn4.enabled:=false;
bitbtn5.enabled:=false; end
end;
procedure TForm1.FormDestroy(Sender: TObject);
begin
closefile(f);
end;
procedure TForm1.BitBtn1Click(Sender: TObject);
begin
if i<>0 then begin
seek(f,i-1);
VvodZap;
i:=i-1; end;
bitbtn4.enabled:=true;
bitbtn5.enabled:=true;
end;
procedure TForm1.BitBtn2Click(Sender: TObject);
begin
seek(f,0);
VvodZap;
i:=0;
end;
procedure TForm1.BitBtn5Click(Sender: TObject);
begin
seek(f,kol_zap-1);
VvodZap;
i:=kol_zap-1;
end;
procedure TForm1.BitBtn3Click(Sender: TObject);
begin
i:=strtoint(InputBox('Переход', 'Введите номер записи для перехода','0'));
seek(f,i);
VvodZap;
end;
procedure TForm1.BitBtn6Click(Sender: TObject);
begin
form1.Close;
end;
procedure TForm1.BitBtn7Click(Sender: TObject);
begin
//showmessage(inttostr(i));
if Application.MessageBox(PChar('Вы действительно хотите удалить текущую запись ?'),'Удаление строки',mb_YesNo) = id_Yes then
begin
Assignfile(temp,'spis_rec.tmp');
Rewrite(temp);
seek(f,0);
while not eof(f) do begin
read(f,std);
if std.fam<>Edit1.Text then
write (temp,std);
end;
closefile(f);
closefile(temp);
Deletefile('spis_rec.dat');
Renamefile('spis_rec.tmp','spis_rec.dat');
Assignfile(f,'spis_rec.dat');
reset(f);
if i=(kol_zap-1) then i:=i-1; //если была удалена последняя запись
seek(f,i);
VvodZap;
showmessage('Запись удалена');
end;
kol_zap:=FileSize(F);
StatusBar1.Panels[0].Text:='В файле всего '+IntToStr(kol_Zap)+' записей';
end;
procedure TForm1.BitBtn8Click(Sender: TObject);
begin
x:=2;
Edit9.Text:='2';
ComboBox1.Visible:=True;
BitBtn1.Enabled:=False;
BitBtn2.Enabled:=False;
BitBtn3.Enabled:=False;
BitBtn4.Enabled:=False;
BitBtn5.Enabled:=False;
BitBtn7.Enabled:=False;
BitBtn8.Enabled:=False;
edit1.ReadOnly:=False;
edit1.Text:='';
edit2.ReadOnly:=False;
edit2.Text:='';
edit3.ReadOnly:=False;
edit3.Text:='';
edit4.Text:='';
edit4.ReadOnly:=False;
edit5.Text:='';
edit5.ReadOnly:=False;
edit6.ReadOnly:=False;
edit7.Text:='';
edit7.ReadOnly:=False;
edit8.Text:='';
edit8.ReadOnly:=False;
BitBtn11.Visible:=True;
BitBtn9.Visible:=False;
edit6.Visible:=false;
end;
procedure TForm1.BitBtn9Click(Sender: TObject);
begin
x:=1;
edit9.Text:='1';
BitBtn1.Enabled:=False;
BitBtn2.Enabled:=False;
BitBtn3.Enabled:=False;
BitBtn4.Enabled:=False;
BitBtn5.Enabled:=False;
BitBtn7.Enabled:=False;
BitBtn8.Enabled:=False;
edit1.ReadOnly:=False;
edit2.ReadOnly:=False;
edit3.ReadOnly:=False;
edit4.ReadOnly:=False;
edit5.ReadOnly:=False;
edit6.ReadOnly:=False;
edit7.ReadOnly:=False;
edit8.ReadOnly:=False;
BitBtn11.Visible:=True;
BitBtn9.Visible:=False;
end;
procedure TForm1.Button1Click(Sender: TObject);
begin
ComboBox1.Visible:=False;
Edit6.Text:=ComboBox1.Text;
edit6.Visible:=true;
BitBtn1.Enabled:=true;
BitBtn2.Enabled:=true;
BitBtn3.Enabled:=true;
BitBtn4.Enabled:=true;
BitBtn5.Enabled:=true;
BitBtn7.Enabled:=true;
BitBtn8.Enabled:=true;
BitBtn9.Visible:=true;
BitBtn11.Visible:=false;
edit1.ReadOnly:=True;
edit2.ReadOnly:=True;
edit3.ReadOnly:=True;
edit4.ReadOnly:=True;
edit5.ReadOnly:=True;
edit6.ReadOnly:=True;
edit7.ReadOnly:=True;
edit8.ReadOnly:=True;
BitBtn10.Enabled:=False;
end;
procedure TForm1.Edit1Change(Sender: TObject);
begin
if edit1.Modified and edit2.Modified and edit3.Modified and Edit4.Modified and edit5.Modified and edit7.Modified then
BitBtn10.Enabled:=true
end;
procedure TForm1.Edit2Change(Sender: TObject);
begin
if edit1.Modified and edit2.Modified and edit3.Modified and Edit4.Modified and edit5.Modified and edit7.Modified then
BitBtn10.Enabled:=true
end;
procedure TForm1.Edit3Change(Sender: TObject);
begin
if edit1.Modified and edit2.Modified and edit3.Modified and Edit4.Modified and edit5.Modified and edit7.Modified then
BitBtn10.Enabled:=true
end;
procedure TForm1.Edit4Change(Sender: TObject);
begin
if edit1.Modified and edit2.Modified and edit3.Modified and Edit4.Modified and edit5.Modified and edit7.Modified then
BitBtn10.Enabled:=true
end;
procedure TForm1.Edit5Change(Sender: TObject);
begin
if edit1.Modified and edit2.Modified and edit3.Modified and Edit4.Modified and edit5.Modified and edit7.Modified then
BitBtn10.Enabled:=true
end;
procedure TForm1.Edit8Change(Sender: TObject);
begin
if edit1.Modified and edit2.Modified and edit3.Modified and Edit4.Modified and edit5.Modified and edit7.Modified then
BitBtn10.Enabled:=true
end;
procedure TForm1.Edit7Change(Sender: TObject);
begin
if edit1.Modified and edit2.Modified and edit3.Modified and Edit4.Modified and edit5.Modified and edit7.Modified then
BitBtn10.Enabled:=true
end;
procedure TForm1.Edit6Change(Sender: TObject);
begin
if edit1.Modified and edit2.Modified and edit3.Modified and Edit4.Modified and edit5.Modified and edit7.Modified then
BitBtn10.Enabled:=true
end;
procedure TForm1.BitBtn10Click(Sender: TObject);
var
L,OL: Student;
F,NF: file of Student;
begin
{if Edit9.text='1' then }
SetCurrentDir(ExtractFilePath(Application.exename)+'Spis_rec.dat');
AssignFile(NF,'Spis_recc.dat');
Rewrite(NF);
if FileExists('Spis_reс.dat') then
begin
Assignfile(F,'Spis_rec.dat');
Reset(F);
while not Eof (F) do
begin
read(F,OL);
write(NF,OL);
end;
CloseFile(F);
end;
write (NF,OL);
CloseFile(NF);
DeleteFile('Spis_rec.dat');
RenameFile('Spis_recc.dat','Spis_rec.dat');
end; |
(
Сообщение от ivandem
