Delphi ActiveX Requires Chilkat v11.7.0+

Get the Text Block Below a PDF Caption

See more PDF Text Extraction Examples

Demonstrates the "label" option with labelValue "below", which captures the block of text directly under a caption such as "Ship To", ending at the next gap or heading. Combined with layout "lines", the lines of an address block are kept separate. Delphi ActiveX

var
success: Integer;
pdf: TChilkatPdf;
json: TChilkatJsonObject;
jsonOut: TChilkatJsonObject;

begin
success := 0;

//  This example requires the Chilkat API to have been previously unlocked.
//  See Global Unlock Sample for sample code.

//  The packing slip used in this example is available at packing_slip.pdf

pdf := TChilkatPdf.Create(Self);
success := pdf.LoadFile('qa_data/pdf/packing_slip.pdf');
if (success = 0) then
  begin
    Memo1.Lines.Add(pdf.LastErrorText);
    Exit;
  end;

json := TChilkatJsonObject.Create(Self);
jsonOut := TChilkatJsonObject.Create(Self);

//  The packing slip has the captions "Bill To" and "Ship To" side by side,
//  each with an address block below it.
json.UpdateString('label','Ship To');

//  "below" means the value is the block of text directly under the label.
json.UpdateString('labelValue','below');

//  With the default "flow" layout the lines of the block would be joined into one paragraph.
//  "lines" keeps each line of the address on its own line.
json.UpdateString('layout','lines');

success := pdf.ExtractText('text',json.ControlInterface,jsonOut.ControlInterface);
if (success = 0) then
  begin
    Memo1.Lines.Add(pdf.LastErrorText);
    Exit;
  end;

Memo1.Lines.Add('Ship To:');
Memo1.Lines.Add(jsonOut.StringOf('text'));
Memo1.Lines.Add('');

json.UpdateString('label','Bill To');
success := pdf.ExtractText('text',json.ControlInterface,jsonOut.ControlInterface);
if (success = 0) then
  begin
    Memo1.Lines.Add(pdf.LastErrorText);
    Exit;
  end;
Memo1.Lines.Add('Bill To:');
Memo1.Lines.Add(jsonOut.StringOf('text'));
Memo1.Lines.Add('');

//  A caption over a short paragraph works the same way.  Here the flow layout is better,
//  because the two lines are one piece of text.
json.UpdateString('label','Special Instructions');
json.UpdateString('layout','flow');
success := pdf.ExtractText('text',json.ControlInterface,jsonOut.ControlInterface);
if (success = 0) then
  begin
    Memo1.Lines.Add(pdf.LastErrorText);
    Exit;
  end;
Memo1.Lines.Add('Special Instructions:');
Memo1.Lines.Add(jsonOut.StringOf('text'));

//  Sample output:

//  Ship To:
//  Frank Delgado
//  c/o Harbor Pet Boarding
//  9 Ferry Lane
//  Portside, WA 98001
//  
//  Bill To:
//  Frank Delgado
//  Apartment 3B
//  41 Mill Street
//  Portside, WA 98000
//  
//  Special Instructions:
//  Leave the carton with the boarding office if no one answers. Do not leave it outside; the cat tree is not packed for rain.