Re: Design Issues - Getting started with GUI interfaces.

[Carl Nygard <cjnygard fast net>]

On Wed, 2004-11-03 at 15:39, Tyler Hepworth wrote:
> I have been programming perl for sometime, but this is my first go at
> designing GUI interfaces.  I am coming up against the best way to
> design GUIs and would appreciate some hints on how best to structure
> my code.  Here is an explanation of my specific problem:
>
> Files:
>
> main.pl
> Main.pm
> DB.pm
> Farm.pm
>
> main.pl - makes call to sub mainLoop in Main.pm that starts the program
>
> Main.pm - 
>
> sub mainLoop {
>    -called a sub to create a tree (createTree)
>    -create an HPaned object and place the tree in it
>    -place the HPaned into a window
>    -show all
>    -etc
> }
>
> sub createTree {
>    -call a routine in DB.pm to get values for the tree store
>    -build the tree store and tree view
>  
>    # here is the problem area
>    -connect the tree view to a signal_connect (row-activated)
>    -have anonymous subroutine to get data from the activated row
>    -pass the data to Farm.pm and construct a widget that displays
>       detailed information about the row clicked on in the tree.
>       This widget has to get back to mainLoop so that it can be
>       added to the HPaned object and displayed.  How can I add this
>       new widget to the HPaned without setting Global variables (our)
>       and other types of ugliness.  

Try a dialog, it'll have ok/cancel buttons, which you can use to trigger
possible updates.

Also look at libglade, could make some of your widget creation code much
simpler.

>    -return the tree to mainLoop
> }
>
> Am I going about this the right way?  Any suggestions on what to
> change or how to improve?
>
> Thanks for any suggestions,
>
> Tyler Hepworth
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