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#!F-adobe-helvetica-medium-r-normal--18*
#!N
#!CNavyBlue #!N #!Rall987 Controlling the Data Explorer Executive or
User Interface from a Separate Program #!N #!EC #!N #!N You
may want to write a program which controls the Data Explorer
Executive. For example, you could write your own user interface, providing
a custom "look and feel," and send Data Explorer script language
commands to the Data Explorer executive. In this case you would
get all of the functionality provided by the executive (cache management,
control of execution order, and object management). You could also directly
control the Data Explorer User Interface from a separate program, loading
and executing visual programs. For example, you may wish to fire
up Data Explorer with a "canned" visualization program once a simulation
is complete, with parameters within the visual program preset to particular
values. #!N #!N Graphically, both of these are represented by the
upper "User Program" in #!Larch118,dxall984 f Figure 118 #!EL , which controls the Data Explorer
Executive or User Interface from the user's program. The libDXL.a library
(DXLink) provides this functionality, and is discussed in #!Ldxlink,dxall1141 h DXLink Developer's Toolkit #!EL . Examples
of DXLink programs can be found in /usr/lpp/dx/samples/dxlink. #!N #!N With
the functionality provided by SuperviseWindow and SuperviseState (see #!Lsupwind,dxall961 h SuperviseWindow #!EL and #!Lsupstat,dxall958 h SuperviseState #!EL
in IBM Visualization Data Explorer User's Reference), your program does not
need the Image tool (which is provided only within the Data
Explorer User Interface) in order to provide direct user interaction in
the image window. Thus a custom GUI communicating only with the
Data Explorer Executive can implement all of the user-interaction provided by
the Data Explorer User Interface. Examples of custom direct interactors can
be found in /usr/lpp/dx/samples/supervise; while these examples are demonstrated using the
Data Explorer User Interface, there is no necessity that they do
so, as all of the modules used in these examples (SuperviseWindow,
SuperviseState, and Display, in particular) are available directly from the Data
Explorer Executive. #!N #!N #!N #!F-adobe-times-medium-i-normal--18* Next Topic #!EF #!N #!N
#!Lwritmod,dxall989 h Writing a Simple Module #!EL #!N #!F-adobe-times-medium-i-normal--18* #!N
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