The basic code needed to navigate an outline tree and print its result:
C# C++ Go Java JavaScript Obj-C PHP Python Ruby VB
1 void PrintIdent ( Bookmark item )
2 {
3 int ident = item. GetIdent () - 1 ;
4 for ( int i = 0 ; i < ident; ++ i) {
5 Console. Write ( " " );
6 }
7 }
8 void PrintOutlineTree ( Bookmark item )
9 {
10 for (; item. IsValid (); item = item. GetNext ()) {
11 PrintIdent (item);
12 Console. Write ( " {0:s}{1:s} ACTION -> " , (item. IsOpen () ? " - " : " + " ), item. GetTitle ());
13 if (item. HasChildren ()) {
14 PrintOutlineTree (item. GetFirstChild ());
15 }
16 }
17 }
18 PDFDoc doc = new PDFDoc (filename);
19 Bookmark root = doc. GetFirstBookmark ();
20 PrintOutlineTree (root);
1 void PrintIndent ( Bookmark item )
2 {
3 int ident = item. GetIndent () - 1 ;
4 for ( int i = 0 ; i < ident; ++ i) {
5 cout << " " ;
6 }
7 }
8 void PrintOutlineTree ( Bookmark item )
9 {
10 for (; item. IsValid (); item = item. GetNext ()) {
11 PrintIndent (item);
12 cout << (item. IsOpen () ? " - " : " + " ) << item. GetTitle () << " ACTION -> " ;
13 if (item. HasChildren ()) {
14 PrintOutlineTree (item. GetFirstChild ());
15 }
16 }
17 }
18 PDFDoc doc ( filename );
19 Bookmark root = doc. GetFirstBookmark ();
20 PrintOutlineTree (root);
1 func PrintIndent (item Bookmark){
2 indent := item. GetIndent () - 1
3 i := 0
4 for i < indent{
5 os.Stdout. Write ([] byte ( " " ))
6 i = i + 1
7 }
8 }
9 func PrintOutlineTree (item Bookmark){
10 for item. IsValid (){
11 PrintIndent (item)
12 if item. IsOpen (){
13 os.Stdout. Write ([] byte ( " - " + item. GetTitle () + " ACTION -> " ))
14 } else {
15 os.Stdout. Write ([] byte ( " + " + item. GetTitle () + " ACTION -> " ))
16 }
17 if item. HasChildren (){
18 PrintOutlineTree (item. GetFirstChild ())
19 }
20 item = item. GetNext ()
21 }
22 }
23 doc := NewPDFDoc (filename)
24 root := doc. GetFirstBookmark ()
25 PrintOutlineTree (root)
1 void PrintIndent ( Bookmark item) throws PDFNetException {
2 int ident = item. getIndent () - 1 ;
3 for ( int i = 0 ; i < ident; ++ i) {
4 System.out. print ( " " );
5 }
6 }
7 void PrintOutlineTree ( Bookmark item) throws PDFNetException {
8 for (; item. isValid (); item = item. getNext ()) {
9 PrintIndent (item);
10 System.out. print ((item. isOpen () ? " - " : " + " ) + item. getTitle () + " ACTION -> " );
11 if (item. hasChildren ()) {
12 PrintOutlineTree (item. getFirstChild ());
13 }
14 }
15 }
16 PDFDoc doc = new PDFDoc (filename);
17 Bookmark root = doc. getFirstBookmark ();
18 PrintOutlineTree (root);
1 async function main () {
2 const printIndent = async ( item , str ) => {
3 const ident = ( await item. getIndent ()) - 1 ;
4 for ( let i = 0 ; i < ident; ++ i) {
5 str += ' ' ;
6 }
7 return str;
8 };
9 const printOutlineTree = async ( item ) => {
10 for (; item != null ; item = await item. getNext ()) {
11 let IndentString = await printIndent (item, IndentString);
12 let TitleString = await item. getTitle ();
13 console. log (IndentString + ( await item. isOpen ()) ? ' - ' : ' + ' ) + TitleString + ' Action -> ' );
14 if ( await item. hasChildren ()) {
15 await printOutlineTree ( await item. getFirstChild ());
16 }
17 }
18 };
19 const doc = await PDFNet.PDFDoc. createFromURL (filename);
20 const root = await docOut. getFirstBookmark ();
21 await printOutlineTree (root);
22 }
23 PDFNet. runWithCleanup (main);
1 void PrintIndent (PTBookmark * item )
2 {
3 int ident = [item GetIndent ] - 1 ;
4 for ( int i = 0 ; i < ident; ++ i) {
5 printf ( " " );
6 }
7 }
8 void PrintOutlineTree (PTBookmark * item )
9 {
10 for (; [item IsValid ]; item = [item GetNext ]) {
11 PrintIndent (item);
12 if ([item IsOpen ]) {
13 printf ( " - %s ACTION -> " , [[item GetTitle ] UTF8String ]);
14 }
15 else {
16 printf ( " + %s ACTION -> " , [[item GetTitle ] UTF8String ]);
17 }
18 if ([item HasChildren ]) {
19 PrintOutlineTree ([item GetFirstChild ]);
20 }
21 }
22 }
23 PTPDFDoc * doc = [[PTPDFDoc alloc ] initWithFilepath : filename];
24 PTBookmark * root = [doc GetFirstBookmark ];
25 PrintOutlineTree (root);
1 function PrintIndent ($item) {
2 $ident = $item -> GetIndent () - 1 ;
3 for ($i = 0 ; $i < $ident; ++ $i) {
4 echo " " ;
5 }
6 }
7 function PrintOutlineTree ($item) {
8 for (; $item -> IsValid (); $item = $item -> GetNext ()) {
9 PrintIndent ($item);
10 echo ($item -> IsOpen () ? " - " : " + " ) . $item -> GetTitle () . " ACTION -> " ;
11 if ($item -> HasChildren ()) {
12 PrintOutlineTree ($item -> GetFirstChild ());
13 }
14 }
15 }
16 $doc = new PDFDoc ($filename);
17 $root = $doc -> GetFirstBookmark ();
18 PrintOutlineTree ($root);
1 def PrintIndent ( item ):
2 indent = item.GetIndent() - 1
3 i = 0
4 while i < indent:
5 sys.stdout.write( " " )
6 i = i + 1
7 def PrintOutlineTree ( item ):
8 while item.IsValid():
9 PrintIndent(item)
10 if item.IsOpen():
11 sys.stdout.write( " - " + item.GetTitle() + " ACTION -> " )
12 else :
13 sys.stdout.write( " + " + item.GetTitle() + " ACTION -> " )
14 if item.HasChildren():
15 PrintOutlineTree(item.GetFirstChild())
16 item = item.GetNext()
17 doc = PDFDoc(filename)
18 root = doc.GetFirstBookmark()
19 PrintOutlineTree(root)
1 def PrintIndent ( item )
2 indent = item. GetIndent () - 1
3 i = 0
4 while i < indent do
5 print " "
6 i = i + 1
7 end
8 end
9 def PrintOutlineTree ( item )
10 while item. IsValid () do
11 PrintIndent (item)
12 if item. IsOpen ()
13 print ( " - " + item. GetTitle () + " ACTION -> " )
14 else
15 print ( " + " + item. GetTitle () + " ACTION -> " )
16 end
17 if item. HasChildren ()
18 PrintOutlineTree (item. GetFirstChild ())
19 end
20 item = item. GetNext ()
21 end
22 end
23 doc = PDFDoc . new (filename)
24 root = doc. GetFirstBookmark ()
25 PrintOutlineTree (root)
1 Sub PrintIndent ( ByVal item As Bookmark )
2 Dim indent As Integer = item . GetIndent () - 1
3 Dim i As Integer
4 For i = 1 To indent
5 Console. Write ( " " )
6 Next
7 End Sub
8 Public Shared Sub PrintOutlineTree (ByVal item As Bookmark )
9 Do While item . IsValid ()
10 PrintIndent ( item )
11 If item .IsOpen Then
12 Console. Write ( " - {0:s} ACTION -> " , item . GetTitle ())
13 Else
14 Console. Write ( " + {0:s} ACTION -> " , item . GetTitle ())
15 End If
16 If item . HasChildren () Then ' Recursively print children sub-trees
17 PrintOutlineTree ( item . GetFirstChild ())
18 End If
19 item = item . GetNext ()
20 Loop
21 End Sub
22 Dim doc As PDFDoc = New PDFDoc (filename)
23 Dim root As Bookmark = doc1. GetFirstBookmark ()
24 PrintOutlineTree (root)
Read, add, edit PDF outlines and bookmarks - Full Sample download and get started with Server SDK .
A PDF document may display a document outline on the screen, allowing the user to navigate interactively from one part of the document to another. The outline consists of a tree-structured hierarchy of Bookmarks (sometimes called outline items), which serve as a "visual table of contents" to display the document's structure to the user.
Each Bookmark has a title that appears on screen, and an Action that specifies what happens when a user clicks on the Bookmark. The typical Action for a user-created Bookmark is to move to another location in the current document — although any Action can be specified.