Re: How to obtain type of a widget?

[David Nečas (Yeti) <yeti physics muni cz>]

On Mon, May 29, 2006 at 01:44:20PM +0200, Daniel Haude wrote:
> I'd like to go through a number of widgets (children of a container  
> widget) and to perform certain actions depending on the type of the  
> widget. Like:
>
> switch (widget_type) {
>       case GTK_ENTRY : ...
>       case GTK_COMBO_BOX ...
> }
>
> I'm sure it is possible but I don't know how.
>
> Suggestions?

First of all, are you sure you want to exclude all derived
types?  If it is really so:

    GType type;

    type = G_TYPE_FROM_INSTANCE(widget);
    if (type == GTK_TYPE_ENTRY) {
        ...
    }
    else if (type == ...

(switch+case is not possible as types are allocated
run-time).

But if you want to accept subclasses too:

   if (GTK_IS_ENTRY(widget)) {
       ...
   }
   else if (GTK_IS...

Yeti


--
Anonyms eat their boogers.