RE: SetSelection with scrolling

From: [at]} <support{>
Date: Tue, 30 Mar 2004 10:10:54 +0200

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Doug,

if I get you right, the following might help:
TextViews.ShowRange(c.text, pos, pos, TextViews.focusOnly)

Regards,

Thomas,
Oberon microsystems, Inc.

-----Original Message-----
From: Douglas G. Danforth [mailto:danforth{([at]})nowhere.xy
Sent: Montag, 29. Marz 2004 19:39
To: blackbox{([at]})nowhere.xy
Subject: SetSelection with scrolling



Folks,
Under program control, I would like to have the screen scroll to the
position at which I have set a 'selection'. I am able to accomplish this
for text that is visible on the screen but setting the selection before
or after the visible text does not cause automatically scrolling to that
location. I set up the situation by:

   c := TextControllers.Focus();
   IF c # NIL THEN
       rd := c.text.NewReader(NIL);
       c.SetCaret(TextControllers.none);
       c.SetSelection(none, none);
       rd.SetPos(0);
   END

and then I create a new selection by:

   (* highlight current word found *)
   pos := rd.Pos();
   beg := pos-LEN(name$);
   c.SetCaret(beg);
   c.SetSelection (beg, pos);

but no scrolling occurs. It would be nice to see how the CP compiler
does its scrolling when it finds an error or how Find does its
scrolling. I don't want to get down to 'message passing' and 'frame'
handling. Surely there is a level just above this that does the
scrolling automatically? I do not know how to see or quarentee that the
Focus does not have the "noAutoScroll" bits set (whatever that actually
means).

Any help would be appreciated.

-Doug

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Received on Tue Mar 30 2004 - 09:10:54 UTC