Fw: Fw: TreeModel and TreeView

[Trigve Siver <trigves yahoo com>]

----- Original Message ----
From: Andrew E. Makeev <andrew solvo ru>
To: Trigve Siver <trigves yahoo com>
Cc: gtkmm-list <gtkmm-list gnome org>
Sent: Monday, January 29, 2007 4:09:54 PM
Subject: Re: Fw: TreeModel and TreeView

>В Пнд, 29/01/2007 в 06:26 -0800, Trigve Siver пишет:
>> Thanks for reply, Andrew
>>          
>
>>         >I would recommend you to use separate thread to open DB
>>         connection and
>>         >load data, and just notify model that it's content changed.
>>         I've used
>>         >Glib::Dispatcher.
>>          
>>         >Also, I've used custom cellrenderer to optimize drawing only
>>         for my own
>>         >needs.
>>        
>> By loading data do you mean to load the whole table from DB? Because I
>> don't want to load the whole table...only records that need to be
>> displayed...
>>
>
>no, I meant load only as much data as you need at the moment.
>
>-andrew

Ok, but as I wrote you, my problem is with

 

virtual void get_value_vfunc (const iterator& iter, int column, Glib::ValueBase& value) const

 

1) Is this only function that get value from model?

2) When is this function called?

3) Which class call this function?

4) Why is this function being called _number_of_row_ times even if only one row is visible?

 

thanks

 

Trigve

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