Function

Vipsclass_map_all

Declaration [src] 

void*
vips_class_map_all (
  GType type,
  VipsClassMapFn fn,
  void* a
)

Description [src]

Loop over all the subclasses of type. Non-abstract classes only. Stop when fn returns non-NULL and return that value.

This function is not directly available to language bindings.

Parameters

type

Type: GType

Base type.

fn

Type: VipsClassMapFn

Call this function for every type.

a

Type: void*

Client data.

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

Return value

Type: void*

NULL if fn returns NULL for all arguments, otherwise the first non-NULL value from fn.

The data is owned by the called function.
The return value can be NULL.