Re: How to implement this custom widget?

[Bob Caryl <bob fis-cal com>]

Luca Cappa wrote:

> Hello,
> i would like to implement a widget like this:
>
> +---------+
> |Up Button|
> +---------+
> | Label1  |
> +---------+
> | Label2  |
> +---------+
> | Label3  |
> +---------+
> |         |
> +---------+
> |         |
> +---------+
> |         |
> +---------+
> |         |
> +---------+
> |         |
> +---------+
> | LabelM-1|
> +---------+
> | LabelM  |
> +---------+
> |Down-Button
> +---------+
>
>
> Where "Up" and "Down" are two buttons the scroll up and down the list 
> composed of N labels, which visible at the same time are few than N, 
> say for example M < N.
>
> Which widgets should i use to implement that widget?
>
> Thanks in advance,
> Luca
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I would not construct a custom widget to accomplish this.  Instead I'd 
derive a class from one of the Gtk::containers and I'd add a pair of 
Gtk::Button widgets with a slot do the scrolling connected to their 
respective "signal_clicked" signals to issue commands to a 
Gtk::ListStore (for display of the labels) displayed in a Gtk::TreeView 
to accomplish the scrolling effect.  Naturally, it'd all be contained in 
the appropriate containers for spacing and position.

Bob

Bob