Re: What is the minimum number of lines to update a gui window without user clicking a button

["L. D. James" <ljames apollo3 com>]

On 08/19/2013 02:28 AM, Markus Elfring wrote:
> > Do you see any technical problems with what I posted?
> Eventually, yes.
>
> It depends on the observed execution speed in your application for example. When
> would you categorise the situation that a specific graphical user interface
> becomes unresponsive?
> Do you expect visual feedback in less than a second for your programs?
The program executes.  The gui is updated in a faction of a second. If I 
placed a left a button there as I find in most of the examples it would 
take longer to see the update because a person can't press a button in 
less than a faction of a second.

But again, my code doesn't experience any delay that I can identify.  
The output is just as immediate as I can see as if it were output with 
"cout" to standard out.

As far as you seeing a technical problem, is it possible that you could 
post some code that would actually work to identify the problem?

Also do you see the same problem with the code supplied by Alan and 
discussed in depth here:
https://mail.gnome.org/archives/gtkmm-list/2013-August/msg00052.html

I tried to model my code based on what I learned from there and from 
what Kjell provided, as well as everything I can see in the 
documentation.  I don't understand how it differs from Alan's code 
except mainly that I change it from the Label widget to a textview widget.

I was hoping to have the simplest example so that I could use the 
example to test various widgets and get a good grip on how to build my own.

> > Do you think you could make it more efficient?
> There are more aspects to consider besides efficiency. How do you think about to
> apply the design pattern "Model-View-Controller"?
> http://en.wikipedia.org/wiki/Model%E2%80%93view%E2%80%93controller

I studied the link you provided above.  I can't say I fully understand 
it.  I had studied it before I asked the group for help, of which I 
received Alan's example that worked.

> > Then, instead of writing three lines to update the gui window, I'd
> > be able to type:
> >
> > gprint("Updated text");
> Such a desire is fine until you clarify a few more implementation details.
I don't currently know how to implement the "gprint()" goal.  But I'm 
working on it.  When my current position is clean enough for a 
discussion I will present it in a different thread, unless someone else 
sees the answer while reading this thread and brings it up.

Currently if the lines of code that I have already posted could be 
improved that would satisfy the namesake of this thread.  Of course if I 
could see some code example of the problem that you're describing with 
my current code, that would be great!  I'd be glad to work with it and 
see the functionality.  But so far all the technical suggestions that 
I'm getting appears to actually already be implemented in the 47 lines 
of code that I published.

-- L. James

--
L. D. James
ljames apollo3 com
www.apollo3.com/~ljames