Function

GLibOptionArgFunc

Declaration 

gboolean
(* GOptionArgFunc) (
  const gchar* option_name,
  const gchar* value,
  gpointer user_data,
  GError** error
)

Description

The type of function to be passed as callback for G_OPTION_ARG_CALLBACK options.

Parameters

option_name

Type: const gchar*

The name of the option being parsed. This will be either a single dash followed by a single letter (for a short name) or two dashes followed by a long option name.

The data is owned by the caller of the function.
The value is a NUL terminated UTF-8 string.
value

Type: const gchar*

The value to be parsed.

The data is owned by the caller of the function.
The value is a NUL terminated UTF-8 string.
user_data

Type: gpointer

User data added to the GOptionGroup containing the option when it was created with g_option_group_new()

The argument can be NULL.
The data is owned by the caller of the function.
error

Type: GError **

The return location for a recoverable error.

The argument can be NULL.
If the return location is not NULL, then you must initialize it to a NULL GError*.
The argument will left initialized to NULL by the function if there are no errors.
In case of error, the argument will be set to a newly allocated GError; the caller will take ownership of the data, and be responsible for freeing it.

Return value

Type: gboolean

TRUE if the option was successfully parsed, FALSE if an error occurred, in which case error should be set with g_set_error()