Class: ExternalStructure

• Inheritance
• Description
• Related information
• Class protocol
  • instance creation
  • queries
• Instance protocol
  • private

Inheritance:

   Object
   |
   +--Collection
      |
      +--SequenceableCollection
         |
         +--ArrayedCollection
            |
            +--UninterpretedBytes
               |
               +--ExternalBytes
                  |
                  +--ExternalStructure

Package:

stx:libbasic

Category:

System-Support

Version:

rev: 1.3 date: 2006/06/20 15:27:17

user: ca

file: ExternalStructure.st directory: libbasic

module: stx stc-classLibrary: libbasic

Author:

Claus Gittinger

Description:

Instances of this class represent external (non-Smalltalk) data,
typically C-structs or C++ instances.
They are only useful to represent handles as returned by C functions as smalltalk objects.

ExternallStructures are much like ExternalBytes - however, the latter
allow you to access bytes via indexed at:/at:put: messages, whilst instances of subclasses of me
allow access via the corresponding getter/setter methods of my C-type.

Related information:

    ExternalBytes
    ExternalAddress
    [how to write primitive code]

Class protocol:

 fromExternalAddress: anExternalAddress

 cType

Instance protocol:

 fromExternalAddress: anExternalAddress