CHANGES_2.0

Change Notes 2.0 (1.10.90)
================

Compiling
---------
-ET++2.0 is now C++2.0 friendly.
-Simplified makefiles.
-Localized dependencies from C++ compiler into one shell script etCC.

Window System Interface
-----------------------
-Improved interface to X11R3 and X11R4
-ET++2.0 supports color, refer to "ET++ Introduction" for a description
 Support for transparent caching of complex backgrounds (refer to the
 application color).
-Under X11 the window border is now owned by X11 and not drawn by ET++

Foundation
----------
-Observers are no longer stored in each object
-MetaDef/MetaImpl 
 The syntax for the various meta implementation macro has been simplified.
 The type of an instance variable is now extracted with the help of 
 the C++ overloading mechanism. 
 The old type descriptors (as I_O etc.) are still available for the sake
 of backward compatibility, but:
 Every type descriptor list in a meta implementation macro must be terminated
 with a 0.
-The ET++ run-time system can now be extended with new Built-in types
 (refer to the files Types.[Ch] for an example of meta-classes for
 built-in types)
-Object I/O performs more type checking while reading objects from
 the object stream.
-Direct access to an object's instance variables ignoring encapsulation
 is now supported with Object::GetAddrOf(const char *varname, Class *&cl)
 
Interaction Classes
-------------------
-VObject:
 In ET++1.0 there existed the two notions: a VObject is in a View
 (the inView instance variable) and a VObject's container (the container
 instance variable). In ET++2.0 this model was simplified and the
 inView instance variable was removed. It is no longer necessary to call
 VObject::SetView().
-PopupItem:
 PopupItems behave now as expected
-Form:
 Is a new layout class, which can be used to align labels and 
 EditTextItems. E.g.
		find what XXXXXXXXXXXXX
		   change XXXXXXXXXXX
 The Find/Change dialog is an example for the use of Forms
-DialogView
 Any VObject can now request the keyboard focus and not only EditTextItems.
-FileDialog
 The FileDialog displays an icon together with the file name.
-More access functions to the state of dialog items

Application Framework Classes
-----------------------------
-Document can now optionally make backups of modified files
-Application Dialog is now more open to extensions

ET++PE
------
-New improved user interface
-Source Browser provides a "flattend" view to all the methods of a class.
-The Source Browser supports "implementors", "inherited", "overrides" queries
 for methods
-Object Structure Browser a new browser for displaying dynamic
 relationships among objects

Name/Signature Changes
------------
ET++1.0                             ET++2.0
Collection::GetIterator             Collection::MakeIterator
OrdCollection::ReversedIterator     OrdCollection::MakeReversedIterator
SeqCollection::AtAfter              SeqCollection::After
SeqCollection::AtBefore             SeqCollection::Before
VObject::DrawBackground             VObject::DrawHighlight
VObject::DownControl                VObject::SendDown
VObject::SetView                    -
OneOfCluster::Set                   OneOfCluster::SetItemOn
Pattern                             Ink
new Font                            new_Font
Expand(void **, int)                Realloc(void *, s)
NoteAlert.Show("...")               ShowAlert(eAlertNote, "...")
Application::DoMakeDocument(char *) Application::DoMakeDocument(const char *) 

-The class StaticBitmap does not exist any more, the class Bitmap
 can be used instead of StaticBitmap.
-char *cClipUndef, *cClipPict, *cClipAscii, *cClipPostScript, *cClipEt;
 { `ClipBoard.[Ch]' }
 These constants do no longer exist. Instead, document types
 are used in order to "type" the paste data (s. Document.Ch).