A window is a rectangular portion of your display located inside the main Graphics Window. Windows are defined in screen coordinates (Xs, Ys). You can define up to five different windows, which can be placed anywhere within the Graphics Window, and which can overlap. Each window can have different graphics specification settings; however, graphics action commands apply to every active window.
The /WINDOW command controls basic window operations:
/WINDOW,WN,XMIN,XMAX,YMIN,YMAX,NCOPY
Table 11.1: Basic Window Operations
| Window Operation | /WINDOW Argument(s) | Description |
|---|---|---|
| Define size and placement | XMIN, XMAX,
YMIN,
YMAX | Size and place windows in the top half, bottom half, right top quadrant, etc. of the Graphics Window |
| Activate / deactivate | XMIN = ON / OFF, respectively | Activates and deactivates a defined window |
| Delete | XMIN = DELE | Deletes a defined window |
| Copy display specifications between windows |
NCOPY
| Copies a set of display specifications (/VIEW,
/DIST, etc.) from window
NCOPY (1 to 5) to the current
window |
To display dissimilar items in separate windows, a sequence of windows action commands is necessary as you activate and deactivate appropriate windows, while protecting the displays in your deactivated windows from being erased. The key to this operation is the /NOERASE command, which prevents the normal screen erase from occurring as new displays are created. After your multiple display has been created, you can return to normal erasing mode via the /ERASE command.