AIX Version 4.3 Differences Guide

• New XmComboBox XmNpositionMode and XmSpinBox XmNpositionType
resources default to incompatible index values and should be forced by all
applications using these widgets. XmONE _BASED is recommended for
XmComboBox widgets because it lets applications distinguish between new
values entered in the text field and the first item in the list.
• XmStringCreateLocalized now handles new lines and tabs.
• The _XmStrings array has, on some machines, been split into multiple
subarrays with the same techniques used by libXt. This preserves
compatibility with Motif 1.2 and permits future expansion.
• Labels for automatically-created subwidgets, like the buttons in a file selection
box, are now unconditionally localized and may not be set or overridden by the
user.
• The XmDisplay XmNenableThinThickness resource now has wider effect than
it did in Motif 2.0.
• The XmDisplay XmNenableToggleVisual resource now changes the way
XmNindicatorOn and XmNindicatorType values are rendered, instead of
simply changing their default values. Motif 2.0 applications that called
XtSetValues() for these resources may notice a change. New constants have
been added to obtain the old behavior.
• In Motif 2.0, there were two distinct XmREPLACE constants with different
values. The XmMergeMode constant has been renamed
XmMERGE_REPLACE. This is a source compatibility issue; binary
compatibility is unaffected.
• XmDisplay XmNdragReceiverProtocolStyle default value has been reverted to
XmDRAG_PREFER_PREREGISTER. Users may find that
XmDRAG_PREFER_DYNAMIC is more efficient.
• The XmNenableEtchedInMenu resource causes buttons and toggles in menus
to be rendered with different colors than those in earlier releases.
• XmScrolledList and XmScrolledText scroll bar colors are computed differently.
They are now derived from the scrolled window's background color, not the
color of the XmList or XmText widget.
• To promote convergence with dtwm, mwm's panning, and virtual screen
support has been removed, as has mwm's support for workspaces.
• The XmCxx library of C++ wrappers has been moved to the demos/lib
directory.
8.4 X Virtual Frame Buffer (4.3.2)
The X Virtual Frame Buffer (XVFB) software technology was first introduced in
AIX 4.3.1 and has been further enhanced in AIX 4.3.2 to support the RS/6000 SP.
The XVFB provides a virtual graphics adapter that allows the X Windows Server
to start and operate on a server machine that has no physical graphics adapter.
In addition, the OpenGL 3D Graphics rendering library can be used with the
XVFB technology.
This capability was introduced primarily to provide improved support for 3D
Rendering Server Applications. By removing the single shared resource (graphics
adapter) from the system, and replacing it with a dynamic resource (system
226 AIX Version 4.3 Differences Guide