How to use TCPDF in Form Custom Button

Scriptcase 9 General
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#1

Hi All,
I am trying to use the TCPDF in buillt library. This library is available in the external library section of scriptcase.
I am using a form. I have added a custom button PHP (I tried AJAX too), to the Form.
Then in the Button I put the following statement
$pdf = $this->Pdf;
$pdf->SetFont(‘helvetica’, ‘N’, 9);
$pdf->SetTextColor(130);
$pdf->Multicell(80, 5, $end, // w, h, txt
0, ‘R’, true, 1, // border, align, fill, ln
118, $y + 12, true, 0); // x, y, reseth, stretch

Fatal error: Uncaught Error: Call to a member function SetFont() on null i
If I comment the SetFont Line, I get the next error
Fatal error: Uncaught Error: Call to a member function SetTextColor() on null

This continues…
Can someone please give ideas.
The same above commands are working in the Report section of the Code

#2

this can help you

#3

Try to do this:

$this->Pdf->SetFont(‘helvetica’, ‘N’, 9);
$this->Pdf->SetTextColor(130);

And so on. It seems Scriptcase does not accept this line:

$pdf = $this->Pdf;
#4

Thanks. But sorry, it is not working. As per your instructions, my code as follows with the same error as I first mentioned :slight_smile:
$pdf = $this->Pdf;
$this->Pdf->SetFont(‘helvetica’, ‘N’, 9);
$this->Pdf->SetTextColor(130);

#5

Thanks . Tried as per your link above with Error as TCPDF ERROR: Some data has already been output, can’t send PDF file. Then I added the ob_end_clean() which cleared the issue.
My code
sc_include_lib(“tcpdf”);
$pdf = new TCPDF(PDF_PAGE_ORIENTATION, PDF_UNIT, PDF_PAGE_FORMAT, true, ‘’, false);

$pdf->SetCreator(PDF_CREATOR);
$pdf->SetAuthor(‘Nicola Asuni’);
$pdf->SetTitle(‘TCPDF Example 50’);
$pdf->SetSubject(‘TCPDF Tutorial’);
//$pdf->SetKeywords(‘TCPDF’, ‘PDF’, ‘example’, ‘test’, 'guide’);
$pdf->AddPage(‘P’,‘A4’); //A4 Portrait
//$pdf->AddPage(‘P’,‘A4’); //A4 Landscape
// ob_end_clean(); // THIS IS REQUIRED TO REMOVE THE ERROR Some data has already been output, can’t send PDF file
$pdf->Output(‘testing.pdf’, ‘I’);

ERROR MESSAGE : ** TCPDF ERROR: Some data has already been output, can’t send PDF file, if ob_end_clean() not given

#6

Ok, but as I said, you could use just the 2 lines I showed you, excluding the $pdf = $this->Pdf; line.

And another thing is: are you calling the library at the top of your code?

#7

Please forgive me for my ignorance.
Please check the following code
sc_include_lib(“tcpdf”);
$pdf = $this->Pdf;
$this->Pdf->SetFont(‘helvetica’, ‘N’, 9);
$this->Pdf->SetTextColor(130);
I am getting this error "Fatal error: Uncaught Error: Call to a member function SetFont() on null ".
Whereas the following code is working in the custom PHP Button:
sc_include_lib(“tcpdf”);
$pdf = new TCPDF(PDF_PAGE_ORIENTATION, PDF_UNIT, PDF_PAGE_FORMAT, true, ‘’, false);

$pdf->SetCreator(PDF_CREATOR);
$pdf->SetAuthor(‘Nicola Asuni’);
$pdf->SetTitle(‘TCPDF Example 50’);
$pdf->SetSubject(‘TCPDF Tutorial’);
//$pdf->SetKeywords(‘TCPDF’, ‘PDF’, ‘example’, ‘test’, 'guide’);
$pdf->AddPage(‘P’,‘A4’); //A4 Portrait
//$pdf->AddPage(‘P’,‘A4’); //A4 Landscape
// ob_end_clean(); // THIS IS REQUIRED TO REMOVE THE ERROR Some data has already been output, can’t send PDF file
$pdf->Output(‘testing.pdf’, ‘I’);

#8

Is that all your code in the Custom Button?

#9

Yes. That ws for the test. And the code threw error at the SetFont segment. But actually, I have further code for the entire report to be printed as pdf. That is part of the REPORT application in SC. Now, with the above working code, i will move the REPORT code to the form / Generate PDF button (Custom button)