Lock/Unlock Checkbox in Text Field properties to prevent the Pdf file from Editing

Aspose.PDF Product Family
1

Hi Team,
I’m looking for a way to lock and unlock the checkbox in Text field properties to prevent the pdf from editing. please find the Src code and do the needful.TextField.zip (374.0 KB)

Thanks,
Swaran S

2

@Swaran,

As your query is related to Aspose.PDF for Java API, I am moving your thread in Aspose.PDF forum where you’ll be guided appropriately.

3

@Swaran

Please try using the below code snippet in order to lock all form fields using JavaScript:

Document doc = new Document(dataDir + "input.pdf");
String js = "for (var i = 0; i < numFields; i += 1) { var fName = getNthFieldName(i); getField(fName).readonly = true; }";
PdfAction action = new JavascriptAction(js);
doc.setOpenAction(action);
doc.save(dataDir + "locked.pdf");

You can also use Flatten() method in order to lock the form fields. Please feel free to let us know in case you need further assistance.

4

Hi Team,
Already tried with flatten fields and it’s working fine, kindly suggest a way to unlock/unflatten the fields in pdf to make sure the fields are visible once again.

5

@Swaran

You can set the read-only property to false in JavaScript in order to unlock the form fields:

String js = "for (var i = 0; i < numFields; i += 1) { var fName = getNthFieldName(i); getField(fName).readonly = false; }";

Please feel free to let us know in case you face any issue.