WINDOW


Basic form

WINDOW STARTING AT x1 y1.

Addition



... ENDING AT x2 y2

Effect

Displays the current secondary list as a modal dialog box (see CALL SCREEN ). The same rules apply as for displaying a list on the full screen, i.e. the page size corresponds to the window size.

The left upper edge of the window appears at column x1 and line y1 . If you do not specify the addition ENDING AT , the position of the right lower edge corresponds to the coordinates of the current screen.

You can use variables to specify the coordinates.

All the functions for secondary lists are supported. These include:

Addition

... ENDING AT x2 y2

Effect

Positions the right lower edge of the window in column x2 and line y2 .

You can use variables to specify the coordinates.

Example

Define a window covering columns 1 to 79 and lines 15 to 23: 

WINDOW STARTING AT 1  15
       ENDING   AT 79 23.

WRITE 'Text'.

Note

Inserts a window on the normal screen .

You can insert the windows described above only within the context of list processing, i.e. not until after an interactive event (see AT LINE-SELECTION ).

You can use the technique shown in the example below to insert a window containing a list during a dialog (see CALL SCREEN ).

Example

Display a list as a modal dialog box: 

CALL SCREEN 100.     "Screen of modal dialog box type
*    STARTING AT 10 10  "... can be started as
*    ENDING   at 60 15. "... separate window with
*                       "... these additions

In the flow logic of the screen 100, the processing branches to list processing in the PBO ( Process Before Output ) module (see LEAVE TO LIST-PROCESSING ).
Flow logic:
PROCESS BEFORE OUTPUT.
MODULE LIST.
Program: 

MODULE LIST OUTPUT.
  LEAVE TO LIST-PROCESSING.
*    AND RETURN TO SCREEN 0. "Alternative to LEAVE SCREEN
*                            "at end

PERFORM OUTPUT. "Output list 

  LEAVE SCREEN.
ENDMODULE.


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