How to add button with "icon only" layout to pdf using PDFBOX?

Question

How to add button with layout "icon only" to pdf using PDFBOX? create a button with this properties

I have try this example before, but just can't set to the button properties I want.

[edit]

This the button I created using acrobat.

And This the button i created using PDFBOX

My question is in PDFBOX how to create a button similar to the button created in acrobat?

Answer 1

The desired layout information may be stored in the TP entry of the appearance characteristics dictionary:

Key	Type	Value
TP	integer	(Optional; pushbutton fields only) A code indicating where to position the text of the widget annotation's caption relative to its icon: 0 No icon; caption only 1 No caption; icon only 2 Caption below the icon 3 Caption above the icon 4 Caption to the right of the icon 5 Caption to the left of the icon 6 Caption overlaid directly on the icon Default value: 0.

(ISO 32000-1, Table 189 – Entries in an appearance characteristics dictionary)

Thus, you may want to try setting the TP entry of the PDAppearanceCharacteristicsDictionary fieldAppearance in the referenced code to 1 .