Re: gtk_tree_model_get_value called for invisible cells?

[Pawel Salek <pawel salek telia com>]

On 2002.11.08 15:58 Pawel Salek wrote:
> I am testing simple subclass of GtkTreeModel to allow the user 
> browsing a data tree without prefetching all the information from the 
> database and storing all of it in memory. I understand that 
> GtkTreeView should call gtk_tree_model_get_value() only for the 
> actually displayed rows and columns but I cannot achieve this effect. 
> Has anybody tried something like this?

Surprisingly, I have not got any response to this. I guess I try to do 
something totally stupid or entirely impossible. In a way, 
documentation to gtk_cell_renderer_text hints that the code should 
handle large number of cells:

http://developer.gnome.org/doc/API/2.0/gtk/GtkCellRendererText.html

"Sets the height of a renderer to explicitly be determined by the 
"font" and "y_pad" property set on it. Further changes in these 
properties do not affect the height, so they must be accompanied by a 
subsequent call to this function. Using this function is unflexible, 
and should really only be used if calculating the size of a cell is too 
slow (ie, a massive number of cells displayed)."

But this does not appear to help at all. I wrote a test program to 
demonstrate the issue.

http://www.theochem.kth.se/~pawsa/tree-view-bug-demo.c

Any hints? Should I file a report in bugzilla?

Pawel