Re: change font in treeview

["vietory2g gmail com" <vietory2g gmail com>]

Hi Kjell

Thanks so much for the reply I will have a go and see how it goes

Cheers, 
Kiet Tran

Sent from my HTC

----- Reply message -----
From: "Kjell Ahlstedt" <kjell ahlstedt bredband net>
To: "kiet tran" <vietory2g gmail com>
Cc: <gtkmm-list gnome org>
Subject: change font in treeview
Date: Fri, Dec 30, 2011 02:15


2011-12-29 02:32, kiet tran skrev:
> Hi,
>
> Could any1 show me how to change font and its size for each row in 
> TreeModel.
>
> cheers,
>
> Kiet Tran
>
The TreeModel stores the data, the TreeView shows the data. The TreeView 
gets help from CellRenderers, such as CellRendererText. What you need to 
do is change some properties of a CellRenderer.

I haven't tried this myself. Some details may be wrong, but basically 
something like this:

// Get a pointer to the CellRenderer in the column you want to change.
Gtk::CellRenderer* cellRenderer = 
m_TreeView.get_column_cell_renderer(iViewColumn);
// Assume you expect it to be a CellRendererText.
Gtk::CellRendererText* cellRendererText = 
dynamic_cast<CellRendererText*>(cellRenderer);
if (cellRendererText)
{
   cellRendererText->property_font() = "MyExcellentFont";
   cellRendererText->property_size() = 20;
}

If you want to specify properties for individual cells (not just whole 
columns), I think you should use attributes in TreeViewColumn's 
CellLayout interface. Your TreeModel must contain one extra column for 
each attribute you specify.

Gtk::TreeViewColumn* treeViewColumn = m_TreeView.get_column(iViewColumn);
Gtk::CellRenderer* cellRenderer = 
m_TreeView.get_column_cell_renderer(iViewColumn);
// Assume you expect it to be a CellRendererText.
Gtk::CellRendererText* cellRendererText = 
dynamic_cast<CellRendererText*>(cellRenderer);
if (cellRendererText)
{
   treeViewColumn->add_attribute(cellRendererText->property_font(), 
m_Columns.m_font);
   treeViewColumn->add_attribute(cellRendererText->property_size(), 
m_Columns.m_size);
}

Have you studied the TreeView widget chapter in the gtkmm tutorial?
http://developer.gnome.org/gtkmm-tutorial/stable/chapter-treeview.html.en

Kjell