delphi inifile 支持 utf8

Uses IniFiles;

const
  SZ_APP_NAME = 'demo_test';

Procedure TForm1.GetSettings;
var
  _MemIniU: TMemIniFile;
  _SettingsPath: string;
begin
  try
    _SettingsPath := GetHomePath + PathDelim + SZ_APP_NAME + PathDelim;
    if ForceDirectories(_SettingsPath) then
    begin
      _MemIniU := TMemIniFile.Create(ChangeFileExt(_SettingsPath,
        'Settings.ini'), TEncoding.UTF8);
      try
        if _MemIniU.ReadInteger(SZ_APP_NAME, 'WindowLeft', -1) = -1 then
          Form1.Position := poScreenCenter
        else
        begin
          Form1.Left := _MemIniU.ReadInteger(SZ_APP_NAME, 'WindowLeft', 10);
          Form1.Top := _MemIniU.ReadInteger(SZ_APP_NAME, 'WindowTop', 10);
          Form1.Width := _MemIniU.ReadInteger(SZ_APP_NAME, 'WindowWidth', 594);
          Form1.Height := _MemIniU.ReadInteger(SZ_APP_NAME,
            'WindowHeight', 342);
        end;
          Edit1.Text := _MemIniU.ReadString(SZ_APP_NAME, 'UnicodeText', 'ąčę');
      finally
        _MemIniU.Free;
      end;
    end;
  except
    on E: Exception do
      MessageDlg(PWideChar(E.Message), TMsgDlgType.mtError,
        [TMsgDlgBtn.mbOK], 0);
  end;
end;

Procedure TForm1.SaveSettings;
var
  _MemIniU: TMemIniFile;
  _SettingsPath: string;
begin
  try
    _SettingsPath := GetHomePath + PathDelim + SZ_APP_NAME + PathDelim;
    _MemIniU := TMemIniFile.Create(ChangeFileExt(_SettingsPath, 'Settings.ini'),
      TEncoding.UTF8);
    try
      if Form1.WindowState <> TWindowState.wsMaximized then
      begin
        _MemIniU.WriteInteger(SZ_APP_NAME, 'WindowLeft', Form1.Left);
        _MemIniU.WriteInteger(SZ_APP_NAME, 'WindowTop', Form1.Top);
        _MemIniU.WriteInteger(SZ_APP_NAME, 'WindowWidth', Form1.Width);
        _MemIniU.WriteInteger(SZ_APP_NAME, 'WindowHeight', Form1.Height);
        _MemIniU.WriteString(SZ_APP_NAME, 'UnicodeText', Edit1.Text);
      end;
      _MemIniU.UpdateFile;
    finally
      _MemIniU.Free;
    end;
  except
    on E: Exception do
      MessageDlg(PWideChar(E.Message), TMsgDlgType.mtError,
        [TMsgDlgBtn.mbOK], 0);
  end;
end;