Delphi World - это проект, являющийся сборником статей и малодокументированных возможностей  по программированию в среде Delphi. Здесь вы найдёте работы по следующим категориям: delphi, delfi, borland, bds, дельфи, делфи, дэльфи, дэлфи, programming, example, программирование, исходные коды, code, исходники, source, sources, сорцы, сорсы, soft, programs, программы, and, how, delphiworld, базы данных, графика, игры, интернет, сети, компоненты, классы, мультимедиа, ос, железо, программа, интерфейс, рабочий стол, синтаксис, технологии, файловая система...
Список объектов на основе класса TList 2

unit Main;

interface

uses
  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
  StdCtrls, Buttons, Spin, ImgList, ComCtrls, ToolWin;

type
  TMainForm = class(TForm)
    PersonsList: TListBox;
    GroupBox1: TGroupBox;
    Label1: TLabel;
    Label2: TLabel;
    Label3: TLabel;
    Label4: TLabel;
    Label5: TLabel;
    Label6: TLabel;
    FNameEdit: TEdit;
    LNameEdit: TEdit;
    DocEdit: TEdit;
    AddrEdit: TEdit;
    PhoneEdit: TEdit;
    AgeEdit: TSpinEdit;
    OpenDlg: TOpenDialog;
    SaveDlg: TSaveDialog;
    ToolBar1: TToolBar;
    AddBtn: TToolButton;
    EditBtn: TToolButton;
    RestBtn: TToolButton;
    DelBtn: TToolButton;
    ClearBtn: TToolButton;
    ToolButton6: TToolButton;
    OpenBtn: TToolButton;
    SaveBtn: TToolButton;
    ToolButton9: TToolButton;
    ImageList1: TImageList;
    procedure ToolButton1Click(Sender: TObject);
    procedure ToolButton2Click(Sender: TObject);
    procedure ToolButton3Click(Sender: TObject);
    procedure ToolButton4Click(Sender: TObject);
    procedure ToolButton5Click(Sender: TObject);
    procedure ToolButton7Click(Sender: TObject);
    procedure ToolButton8Click(Sender: TObject);
    procedure ToolButton9Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

  THuman = class
    FirstName: string;
    LastName: string;
    Age: Integer;
    Document: string;
    Address: string;
    Phone: string;
    constructor Create(AName: string);
  end;

var
  MainForm: TMainForm;

implementation

{$R *.DFM}

constructor THuman.Create(AName: string);
begin
  inherited Create;
  FirstName := AName;
end;

procedure TMainForm.ToolButton1Click(Sender: TObject);
begin
  PersonsList.Items.AddObject('Unknown', THuman.Create('Unknown'));
end;

procedure TMainForm.ToolButton2Click(Sender: TObject);
begin
  with PersonsList, PersonsList.Items do
  begin
    if ItemIndex = -1
      then Exit;
    if not Assigned(Objects[ItemIndex])
      then Objects[ItemIndex] := THuman.Create(Items[ItemIndex]);
    with Objects[ItemIndex] as THuman do
    begin
      FNameEdit.Text := FirstName;
      LNameEdit.Text := LastName;
      AgeEdit.Value := Age;
      DocEdit.Text := Document;
      AddrEdit.Text := Address;
      PhoneEdit.Text := Phone;
    end;
  end;
end;

procedure TMainForm.ToolButton3Click(Sender: TObject);
begin
  if PersonsList.ItemIndex = -1 then
  begin
    ShowMessage('Не выбран элемент');
    Exit;
  end;
  with PersonsList do
    with Items.Objects[ItemIndex] as THuman do
    begin
      FirstName := FNameEdit.Text;
      LastName := LNameEdit.Text;
      Age := AgeEdit.Value;
      Document := DocEdit.Text;
      Address := AddrEdit.Text;
      Phone := PhoneEdit.Text;
      Items[ItemIndex] := FirstName + ' ' + Copy(LastName, 1, 1);
    end;
  FNameEdit.Clear;
  LNameEdit.Clear;
  AgeEdit.Clear;
  DocEdit.Clear;
  AddrEdit.Clear;
  PhoneEdit.Clear;
end;

procedure TMainForm.ToolButton4Click(Sender: TObject);
begin
  with PersonsList do Items.Delete(ItemIndex);
end;

procedure TMainForm.ToolButton5Click(Sender: TObject);
begin
  PersonsList.Items.Clear;
end;

procedure TMainForm.ToolButton7Click(Sender: TObject);
var F: TextFile;
  i: Integer;
begin
  try
    with OpenDlg, PersonsList.Items do
    begin
      if not Execute then Exit;
      LoadFromFile(FileName);
      AssignFile(F, Copy(FileName, 1, Length(FileName) - 4) + '.lso');
      Reset(F);
      i := 0;
      while not EOF(F) do
      begin
        Objects[i] := THuman.Create('');
        Readln(F, (Objects[i] as THuman).FirstName);
        Readln(F, (Objects[i] as THuman).LastName);
        Readln(F, (Objects[i] as THuman).Age);
        Readln(F, (Objects[i] as THuman).Document);
        Readln(F, (Objects[i] as THuman).Address);
        Readln(F, (Objects[i] as THuman).Phone);
        Inc(i);
      end;
      CloseFile(F);
    end;
  except
    on E: EFOpenError do ShowMessage('Ошибка открытия файла');
  end; end;

procedure TMainForm.ToolButton8Click(Sender: TObject);
var F: TextFile;
  i: Integer;
begin
  try
    with SaveDlg, PersonsList.Items do
    begin
      if not Execute then Exit;
      SaveToFile(FileName);
      AssignFile(F, Copy(FileName, 1, Length(FileName) - 4) + '.lso');
      Rewrite(F);
      for i := 0 to Count - 1 do
        if Objects[i] <> nil then
        begin
          Writeln(F, (Objects[i] as THuman).FirstName);
          Writeln(F, (Objects[i] as THuman).LastName);
          Writeln(F, (Objects[i] as THuman).Age);
          Writeln(F, (Objects[i] as THuman).Document);
          Writeln(F, (Objects[i] as THuman).Address);
          Writeln(F, (Objects[i] as THuman).Phone);
        end;
      CloseFile(F);
    end;
  except
    on E: EFOpenError do ShowMessage('Ошибка открытия файла');
  end;
end;

procedure TMainForm.ToolButton9Click(Sender: TObject);
begin
  Close;
end;

end.

Скачать весь проект

Проект Delphi World © Выпуск 2002 - 2024
Автор проекта: USU Software
Вы можете выкупить этот проект.