Function

Vipstype_map

Declaration [src] 

void*
vips_type_map (
  GType base,
  VipsTypeMap2Fn fn,
  void* a,
  void* b
)

Description [src]

Map over a type’s children. Stop when fn returns non-NULL and return that value.

This function is not directly available to language bindings

Parameters

base GType
 

Base type.
fn VipsTypeMap2Fn
 

Call this function for every type.
a void*
 

Client data.
 The argument can be NULL.
 The data is owned by the caller of the function.
b void*
 

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

Return value

Returns: 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.