Re: A question on signals

[John Cupitt ng-london org uk]

Andrej Prsa wrote:

> I have a bunch of widgets locally declared. One of them is a spin button,
which I use to set/unset the sensitivity of 100 other widgets. Thus I use
"changed" signal to invoke my sensitivity set/unset routine. How do I pass
names of those 100 widgets to that routine? I really want to keep their
declaration local.


Hi Andrej,

The usual technique is to have a struct for every window in your 
program. The struct keeps a pointer to each of your widgets, plus any 
other data you need to manage the display.

Make a new struct with g_new() when you build a window, free the struct 
on a "destroy" signal, and pass a pointer to the struct with every 
signal connect for widgets in that window.

John



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