From: Lyle Johnson <lyle@...>
Date: 2003-03-19T09:12:53+09:00
Subject: Re: [FXRUBY] FXProgressBar and SEL_COMMAND

Pierre Baillet wrote:

> Is it possible to hook a method on a progressbar so as to get an event
> when the users clicks on it?

Yes. An FXProgressBar is usually just used for display purposes (like a 
label) and so it's not normally enabled for user events. In order to get 
messages for mouse clicks, then, you first need to enable it:

     aProgressBar.enable

After that, you can "listen" for, say, the SEL_LEFTBUTTONRELEASE message,

     aProgressBar.connect(SEL_LEFTBUTTONRELEASE) {
       puts "Click!"
     }

> How can i proceed if i want to run from my FXMainWindow another
> FXMainWindow ? This doesn't look to be possible at all.

True; FOX 1.2 will support multiple main windows in an application, but 
FOX 1.0 does not.

> So I suppose my base window must extend another FXWindow class.
 > Which one is as easy to use as the FXMainWindow?

You might try subclassing FXDialogBox. Like FXMainWindow, it is derived 
from FXTopWindow (the base class for all top-level windows).

> My application is an image browser and, at some point, i'd like to
> re-intance another intance of my application with a slightly different
> constructor to allow the user to select an image. I'd like to avoid
> rewriting most of my image browser...

This doesn't sound like something that warrants instantiating a whole 
new main window object, but of course I guess it depends on how the 
application is structured. For the dialog box (or whatever it is) that 
the user interacts with to select a new image, is it that you're trying 
to provide some kind of "preview" of the image to be loaded? Can't you 
just embed an FXImageView widget in there somehow? Please take a look at 
the imageview.rb example program for an idea of how to use the 
FXImageView widget, it's pretty easy.

Hope this helps,

Lyle