OpenEuphoria

Re: wxEuphoria - set_event_handler

• Posted by Mario Steele <eumario at trilake.net> Apr 25, 2005
• 458 views

Hey Jim,
sixs wrote:
> 
> Hi. I'm having some trouble with clicking on a wxlistbox  and I am 
> confused  about the event handler. I  am thinking that  within set event 
> handler  that the "this"  is the wxFrame name, "id" is thename of the 
> listbox, the "event" is ?, " rid" is the name of the procedure. I can 
> get the buttons to work.
> Thanks for any help
> Jim

Okay, I know this can be a bit confusing at first, but it's actually quite
simple.  With wxEuphoria, most controls, can have a ID assigned to it, but
the thing to note about wxEuphoria, is that it's an Object Oriented library.

In the set_event_handler() routine, this refers to the instance of the
control you created, for example:

constant MyFrame = create(wxWindow,{0,-1,"Hello World",-1,-1,-1,-1})

set_event_handler(MyFrame,-1,wxEVT_PAINT,routine_id("myPaintRoutine"))

Notice, that the 'this' is being passed as MyFrame.  the 'id' is -1.
The 'event' is wxEVT_PAINT, and the 'rid' is "routine_id("myPaintRoutine")"

Another way this can work, is through this method:
set_event_handler(MyFrame,get_id(MyFrame),wxEVT_PAINT,routine_id("myPaintRoutine"))

Most generally, the ID that you pass in a set_event_handler() can be a -1, so
that the wxEuphoria library can grab the 'id' associated with the instance
given.

Hope this helps.

Mario Steele
http://enchantedblade.trilake.net
Attaining World Dominiation, one byte at a time...