Struct

GLibHook

Description 

struct GHook {
  gpointer data;
  GHook* next;
  GHook* prev;
  guint ref_count;
  gulong hook_id;
  guint flags;
  gpointer func;
  GDestroyNotify destroy;
}

The GHook struct represents a single hook function in a GHookList.

Structure members
data

Data which is passed to func when this hook is invoked.
next

Pointer to the next hook in the list.
prev

Pointer to the previous hook in the list.
ref_count

The reference count of this hook.
hook_id

The id of this hook, which is unique within its list.
flags

Flags which are set for this hook. See GHookFlagMask for predefined flags.
func

The function to call when this hook is invoked. The possible signatures for this function are GHookFunc and GHookCheckFunc.
destroy

The default finalize_hook function of a GHookList calls this member of the hook that is being finalized.

Functions

g_hook_alloc

Allocates space for a GHook and initializes it.

g_hook_destroy

Destroys a GHook, given its ID.

g_hook_destroy_link

Removes one GHook from a GHookList, marking it inactive and calling g_hook_unref() on it.

g_hook_find

Finds a GHook in a GHookList using the given function to test for a match.

g_hook_find_data

Finds a GHook in a GHookList with the given data.

g_hook_find_func

Finds a GHook in a GHookList with the given function.

g_hook_find_func_data

Finds a GHook in a GHookList with the given function and data.

g_hook_first_valid

Returns the first GHook in a GHookList which has not been destroyed. The reference count for the GHook is incremented, so you must call g_hook_unref() to restore it when no longer needed. (Or call g_hook_next_valid() if you are stepping through the GHookList.)

g_hook_free

Calls the GHookList finalize_hook function if it exists, and frees the memory allocated for the GHook.

g_hook_get

Returns the GHook with the given id, or NULL if it is not found.

g_hook_insert_before

Inserts a GHook into a GHookList, before a given GHook.

g_hook_insert_sorted

Inserts a GHook into a GHookList, sorted by the given function.

g_hook_next_valid

Returns the next GHook in a GHookList which has not been destroyed. The reference count for the GHook is incremented, so you must call g_hook_unref() to restore it when no longer needed. (Or continue to call g_hook_next_valid() until NULL is returned.)

g_hook_prepend

Prepends a GHook on the start of a GHookList.

g_hook_ref

Increments the reference count for a GHook.

g_hook_unref

Decrements the reference count of a GHook. If the reference count falls to 0, the GHook is removed from the GHookList and g_hook_free() is called to free it.

Instance methods

g_hook_compare_ids

Compares the ids of two GHook elements, returning a negative value if the second id is greater than the first.