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procedure TForm1.DBGrid4CellClick(Column: TColumn);
begin
  if (datasource4.DataSet = QBuchstamm) then
    ebuchtitel.Text := QBuchstamm.fieldbyname('Titel').asstring;
  if column = dbgrid4.Columns.items[10] then Buchansehen1Click(Self);
end;

procedure TForm1.Buchansehen1Click(Sender: TObject);
begin                                         //740
  form3.Visible := true; form3.SetBounds(screen.Width-290,90,290,400);
  form3.image1.setbounds(10,10,265,350); form3.Image1.Visible := true;
  form3.Image1.Hint := 'Vergrößern mit <Klick>';
  tname := concat(label30.caption, 'Bildb\',QBuchstamm.fieldbyname('TITEL').asstring,'.jpg');    //DBText1.caption
  if fileexists(tname) and (QBuchstamm.FieldByName('D').AsString = '-') then lade_buchstamm(self);
  if not fileExists(tname) then tname := label30.caption+'Bildb\nocover.bmp';
  form3.image1.picture.loadfromfile(tname);
  form3.Caption := extractfilename(tname);
  if extractfilename(tname) = 'nocover.bmp' then
  begin
    if MessageDlg('Soll ein Bild geladen und eingefügt werden? ',
       mtConfirmation, [mbYes, mbNo], 0) = mrYes then Img2Cb(AImage);   
  end
end;

procedure TForm1.Img2Cb(AImage: TImage);
begin
  if form3.OpenPictureDialog1.Execute then
    form3.Image1.Picture.LoadFromFile(form3.OpenPictureDialog1.FileName);
end;					

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procedure TForm1.DBGrid4CellClick(Column: TColumn);
begin
  if (datasource4.DataSet = QBuchstamm) then
    ebuchtitel.Text := QBuchstamm.fieldbyname('Titel').asstring;
  if DBGrid4.Columns.Items[Column.Index].FieldName = 'D' then Buchansehen1Click(Self);
end;					

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column = dbgrid4.Columns.items[10]					

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column = dbgrid4.Columns.items[10]