[Jprogramming] (1!:2)&2 i.e. "Screen"

[Chris Burke]

Thomas Costigliola wrote:
> I am bulding a stand-alone program (running with "-jprofile myprogram.ijs"). Can this be used to write the output of running a script to an ijx window I create myself? I have been looking at jijs.ijs but I cuold not figure out how the sessions knows that (1!:2)&2 should write to the ijx window. Is this hard coded? If so how, how exectly is the ijx window identified by internally?
> 

In Jwd, the 1!:2&2 writes to the ijx form, if any. The normal J profile
creates an ijx window, so running your app without the -jprofile
parameter will do this.

You can create an ijx window yourself, and this can be useful when
testing applications. A minimal ijx window can be found in
system\extras\util\minijx.ijs.

For example, create the script below, and an icon that runs it,
something like:

   c:\j6\j.exe -jprofile myscript.ijs

Run it, and note that clicking the button gives no output.

Now remove the NB. and run the script again. This time, a session
appears and you can see the output.

-------

NB. 11!:0 'pc ijx closeok;xywh 0 0 300 200'
NB. 11!:0 'cc e editijx ws_hscroll ws_vscroll es_nohidesel'
NB. 11!:0 'setfont e ',>(5=9!:12'') { '"Courier New" 12';'monospaced 12'
NB. 11!:0 'pas 0 0;pgroup jijx;pshow'

11!:0 'pc abc closeok'
11!:0 'cc ok button'
11!:0 'pshow'

wdhandler_z_=: 6!:1 (1!:2) 2: