No such type.... Re: [Java-gnome-developer] Tree-Widget with Pixmaps at the nodes?

[Linuxhippy <lin...@we...>]

Hi!

I´ve read alle the examples, and wow, this widget isnt easy.

My problem is, that I need to create a TreeStore  with Objects defined 
in Class Type...
But which Object is an Image? - Is it O.K. to use a Image, I dindt find 
any useful Pixbuf-stuff
I tried it with several types, but I only became this:

(java-gnome:1653): Gtk-WARNING **: gtktreestore.c:801: Unable to convert 
from gpointer to GObject

I´m really frustrated, I want to learn Java-GTK, but some parts are so 
counterintuitive, I dont really understand this widget..

Has anybody already written an app using images in Treeview? Some 
sourcecode would help extremly....

Sorry, but I really, really read very much documentation...

thx Linuxhippy




It only says

>On Tue, 2002-12-03 at 15:11, Clemens Eisserer wrote:
>  
>
>>Hi there!
>>
>>Please excuse that I´m asking so much, but I really didnt find a solution.
>>    
>>
>No problem. We'll help wherever possible & I'm sure other readers of
>this list are glad to hear such advice.
>
>  
>
>>A want to create a Tree-Widget wich has a pixmap at its node.
>>    
>>
>
>Look at src/example/gtk/tree/TreeExample. 
>
>You can add multiple renderers to each column (as is done in the first
>column of the example). If the first one you add is a
>CellRendererPixbuf, then you should get your desired effect. 
>
>You will have to (for now) store the names of the image to be displayed
>at each node in one of the data blocks of the treestore and map this to
>the renderer in the column using something like
>myTreeColumn.addAttributeMapping( myPixbufRenderer,
>CellRendererPixBuf.Attibute.PIXBUF, 1)
>
>
>  
>
>>PUH this widget is complex and a little bit contraintuitive.....
>>    
>>
>... but also very powerful. We should, probably, create more simple
>wrapper classes, like SimpleList.
>
>  
>