Function
GeglOperationlist_property_keys
Declaration [src]
gchar**
gegl_operation_list_property_keys (
  const gchar* operation_type,
  const gchar* property_name,
  guint* n_keys
)
      Parameters
operation_type- 
            
Type:
const gchar*The name of the operation type we want to query to property keys for.
The data is owned by the caller of the function. The value is a NUL terminated UTF-8 string.  property_name- 
            
Type:
const gchar*The property to query a key for.
The data is owned by the caller of the function. The value is a NUL terminated UTF-8 string.  n_keys- 
            
Type:
guint*Return location for number of property keys.
The argument will be set by the function.  
Return value
Type: An array of utf8
An allocated NULL terminated array of property-key names. The list should be freed with g_free after use.
The length of the array is in the n_keys argument. | 
| The caller of the function takes ownership of the data container, but not the data inside it. | 
| Each element is a NUL terminated UTF-8 string. |