From: Lyle Johnson <lyle@...>
Date: 2002-08-28T08:02:48+09:00
Subject: Re: FXRuby: Creating a terminal window ...

Dale Martenson wrote:
> I am using an FXText control as my main terminal window. I have a couple 
> of problems:

Sorry for the delayed response; I've been spending time with Judy ;)

> 1. How do I get it to auto-scroll? Seems like it should be easy, but so 
> far I haven't figured it out.

I just posted an answer to this on the FOX Community FAQ list:

     http://www.fifthplanet.net/cgi-bin/wiki.pl?FAQ

Look near the bottom of the list.

> 2. I want the window to act like a terminal window where input is only 
> appended to the existing window. Can I stop the user from repositioning 
> the cursor with the mouse. I have already taken care of the arrow keys 
> by capturing SEL_KEYPRESS. Do I just do something similar when capturing 
> mouse events?

Yes, I think you'll need to intercept the SEL_LEFTBUTTONPRESS (and 
possibly SEL_LEFTBUTTONRELEASE) messages for that window so that 
"clicking" at a certain position doesn't move the text caret.

> 3. What is the best way to simulate a backspace or delete? Since I 
> capture SEL_KEYPRESS, I know when it happens, but what do I do to the 
> FXText control to make it update correctly?

You should probably just mimic what FXText normally does when the user 
presses those keys. The final word is to actually look at the C++ source 
code for the FXText widget's onKeyPress() member function; but for 
starters, you can send the FXText::ID_DELETE message to an FXText widget 
to tell it to delete the character at the current cursor position, i.e.

     text.handle(self, MKUINT(FXText::ID_DELETE, SEL_COMMAND), nil)

or to do a "backspace" at the current cursor position, send ID_BACKSPACE:

     text.handle(self, MKUINT(FXText::ID_BACKSPACE, SEL_COMMAND), nil)

Hope this helps,

Lyle