GDDM V3R2 General Information
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Divisions of the screen

GDDM V3R2 General Information
GC33-0866-03
The screen can be divided into independent units of two kinds:
  • Operator windows
  • Partitions (also known as application windows)
Operator windows
Operator windows are divisions of the screen created by GDDM application programs. They can be positioned, sized, and scrolled either by application programs, or by the terminal operator using GDDM User Control functions.
An important use of GDDM operator window functions is in writing task-manager applications that allow a different GDDM program to run in each window. A GDDM program that runs on a full screen can also run in one of these operator windows. 





    ___ Note _______________________________________________________________ 
   | The printed book here contains a photograph of a screen showing GDDM   |
   | windowing.                                                             |
   |                                                                        |
   |________________________________________________________________________|




   Figure 9. GDDM windowing
Partitions
Partitions (application windows) are also divisions of the screen. They too can be created, positioned, sized, and scrolled by GDDM application programs. Unlike operator windows, however, they cannot be manipulated by the operator, and are not used to run multiple application programs.
If both types of presentation structure are on a screen at the same time, partitions appear as subdivisions of operator windows.

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