Hi,
As of now I'm trying to indicate to a user which fields they are
required to fill out in an interactive pdf form. Initially I was simply
adding a PDAnnotationHighlight element with the same coordinates as each
widget belonging to the field object. However, I find the reverse
process cumbersome; trying to find and remove all the
PDHighlightAnnotations associated with a given PDField object (added
previously) once the PDFields have been filled. And for this reason I
was trying to use the setAppearanceCharacteristics function associated
with each PDAnnotationWidget to just add a border around the field. So
something like:
PDField field = pdf.getField("field");
List<PDAnnotationWidget> widgets = field.getWidgets();
for (PDAnnotationWidget widget : widgets) {
PDAppearanceCharacteristicsDictionary acd = new
PDAppearanceCharacteristicsDictionary(new COSDictionary());
acd.setBorderColour(new PDColor(new float[] { 0, 0, 1 },
PDDeviceRGB.INSTANCE));
widget.setAppearanceCharacteristics(acd);
}
But after saving to disk it seems that the document is unchanged. Am I
missing something here?
Thanks,
Jacob MacWilliams
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