2 These are the comment blocks used in Gnome source files to document
3 functions (and macros, signals and properties, if you want).
7 * @par1: description of parameter 1. These can extend over more than
9 * @par2: description of parameter 2
11 * The function description goes here. You can use @par1 to refer to parameters
12 * so that they are highlighted in the output. You can also use %constant
13 * for constants, function_name2() for functions and #GtkWidget for links to
14 * other declarations (which may be documented elsewhere).
16 * Returns: an integer.
19 The block starts with '/**'.
20 Each line starts with ' * '.
22 The second line is the function name, optionally followed by a ':'. In
23 order to document signals in inline comments, use a name of the form
24 class::signal, e.g. GtkWidget::notify-child. For properties, use a
25 name of the form class:property, e.g. GtkAlignment:top-padding. Note
26 that gtk-doc expects the signal and property names to be spelled with
27 hyphens, not underlines.
29 Following the function name are the parameters, e.g. '@par1:' above.
31 A blank line MUST be used to separate parameter descriptions from the main
32 description (otherwise it is assumed to be a continuation of the parameter
35 After the main description is a 'Returns:' line to describe the
36 returned value of the function (if it is not void).
38 Text inside the descriptions can use these special characters (they
39 will be expanded into appropriate DocBook tags):
43 name() reference to a function, or a macro which works like a function
44 (this will be turned into a hypertext link if the function is
46 #name reference to any other type of declaration, e.g. a struct, enum,
47 union, or macro (this will also be turned into a link if possible).
49 To avoid problems, the characters '<', '>' and '&' in the descriptions are
50 converted into the SGML entities < > and &.
51 This means that you can't use Docbook SGML tags, unless specify the --sgml-mode
52 option for gtkdoc-mkdb, which suppresses the escaping of '<', '>' and
53 '&' and allows Docbook markup in inline comments.
55 If you are using markup in inline comments, you must be careful not to
56 run into problems with the automatic splitting of the comment in
57 paragraphs at empty lines. A line counts as empty for this purpose, if
58 it is empty after the removal of the initial ' * ' prefix. Thus you
59 can work around this problem by adding some trailing whitespace to
60 lines which should appear as empty, but not end a paragraph. This is
61 especially relevant in code examples, which often contain empty lines.
63 Some more hints regarding examples: Hyperlinks in the formatted examples
64 are confusing, therefore you should suppress the gtk-doc markup by using
65 function(<!-- -->) instead of function(). Use character entities to refer
66 to the characters %, &, < or #, e.g.
69 printf ("bla %s %#x", bla, a);
73 if (a < b && verbose)
74 printf ("bla %s %#x", bla, a);