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| unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls, Buttons, jpeg, ExtCtrls;
type
TForm1 = class(TForm)
btn1: TBitBtn;
dlgOpen1: TOpenDialog;
dlgSave1: TSaveDialog;
sbtn1: TSpeedButton;
sbtn2: TSpeedButton;
lbl1: TLabel;
lbl2: TLabel;
sbtn3: TSpeedButton;
edt1: TEdit;
edt2: TEdit;
edt3: TEdit;
edt4: TEdit;
edt5: TEdit;
btn2: TButton;
lbl3: TLabel;
lbl4: TLabel;
lbl5: TLabel;
lbl6: TLabel;
lbl7: TLabel;
sbtn4: TSpeedButton;
edt7: TEdit;
lbl9: TLabel;
sbtn5: TSpeedButton;
Label1: TLabel;
Label2: TLabel;
procedure sbtn1Click(Sender: TObject);
procedure sbtn2Click(Sender: TObject);
procedure sbtn3Click(Sender: TObject);
procedure btn2Click(Sender: TObject);
procedure btn1Click(Sender: TObject);
procedure sbtn4Click(Sender: TObject);
procedure sbtn5Click(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;
type
TRecord = Record
des,tpac:string[100]; //destination, type aircraft
nom,tmdep,tmarr,seats:string[100]; //nomber, dep time, time arrival, seats.
end;
var
Form1: TForm1;
F1: file of TRecord;
F2: file of TRecord;
vs,tmp: TRecord;
number,i:Integer;
implementation
uses Unit2;
{$R *.dfm}
procedure TForm1.sbtn1Click(Sender: TObject);
begin
if dlgSave1.Execute then
begin
AssignFile(F1, dlgSave1.FileName);
Rewrite(F1);
end;
end;
procedure TForm1.sbtn2Click(Sender: TObject);
begin
Form2.edt1.Text:='';
Form2.edt2.Text:='';
Form2.edt3.Text:='';
Form2.edt4.Text:='';
Form2.edt5.Text:='';
Form2.ShowModal;
if ISYes then
begin
vs.nom:=Form2.edt1.Text;
vs.des:=Form2.edt2.Text;
vs.tmdep:=Form2.edt3.Text;
vs.tmarr:=Form2.edt4.Text;
vs.tpac:=Form2.edt5.Text;
Seek(F1, FileSize(F1)); //в конец файла
Write(F1, vs); //новая запись
end;
Form1.lbl2.Caption:=IntToStr(filesize(F1));
end;
procedure TForm1.sbtn3Click(Sender: TObject);
begin
if dlgOpen1.Execute then
begin
AssignFile(F1, dlgOpen1.FileName);
Reset(F1);
Read(F1,vs);
Form1.edt1.Text:=vs.nom;
Form1.edt2.Text:=vs.des;
Form1.edt3.Text:=vs.tmdep;
Form1.edt4.Text:=vs.tmarr;
Form1.edt5.Text:=vs.tpac;
Form1.lbl2.Caption:=IntToStr(filesize(F1));
end;
end;
procedure TForm1.btn2Click(Sender: TObject);
begin
if number>0 then
begin
number:=number-1;
Seek(F1,Number);
read(F1,vs);
Form1.edt1.Text:=vs.nom;
Form1.edt2.Text:=vs.des;
Form1.edt3.Text:=vs.tmdep;
Form1.edt4.Text:=vs.tmarr;
Form1.edt5.Text:=vs.tpac;
end;
end;
procedure TForm1.btn1Click(Sender: TObject);
begin
if Number+1<FileSize(F1) then
begin
Number:=number+1;
Seek(F1,number);
read(F1,vs);
Form1.edt1.Text:=vs.nom;
Form1.edt2.Text:=vs.des;
Form1.edt3.Text:=vs.tmdep;
Form1.edt4.Text:=vs.tmarr;
Form1.edt5.Text:=vs.tpac;
end;
end;
procedure TForm1.sbtn4Click(Sender: TObject);
begin
i:=StrToInt(edt7.Text);
reset(f1);
seek(f1, filesize(f1) - 1);
read(f1, vs);
seek(f1, i - 1);
write(f1, vs); //Перезаписать в позицию удал. записи последнюю
seek(f1, filesize(f1) - 1); //Усечь файл на одну последнюю запись
truncate(f1);
closefile(f1);
AssignFile(F1, dlgOpen1.FileName);
Reset(F1);
Form1.lbl2.Caption:=IntToStr(filesize(F1));
end;
procedure TForm1.sbtn5Click(Sender: TObject);
var
i, MAGICINT: integer;
var
flag: bool;
begin
Form2.edt1.Text:='';
Form2.edt2.Text:='';
Form2.edt3.Text:='';
Form2.edt4.Text:='';
Form2.edt5.Text:='';
Form2.ShowModal;
flag := false;
for i := 0 to filesize(f1) - 1 do
begin
seek(f1, i);
read(f1, vs);
if (Form2.Edt1.Text = vs.nom) or (Form2.Edt2.Text = vs.des) or
(Form2.Edt3.Text = vs.tmdep) or (Form2.Edt4.Text = vs.tmarr) or
(Form2.edt5.Text = vs.tpac) then
begin
Label1.Caption := ' match was found! ';
Label2.Caption := inttostr(i+1);
MAGICINT := i;
flag := true;
break;
end
else
flag := false;
end;
if not flag then
begin
Label2.Caption := '';
Label1.Caption := 'no matches found!';
end
else
begin
seek(f1, MAGICINT);
read(f1, vs);
Edt1.Text := vs.nom;
Edt2.Text := vs.des;
Edt3.Text := vs.tmdep;
Edt4.Text := vs.tmarr;
edt5.Text := vs.tpac;
end;
end;
end. |
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