TreevIew columns not showing.

clash · **Joined:** Wed Jan 17, 2007 6:26 pm **Posts:** 5

Hey all, i'm using Monodevelop, the gui designer is stetic. I "drew" a basic window with some widgets. I added a treeView (called treeView) to the window and i'm assuming the code below should add columns to it. But no it doesn't :(

I keep getting this error.

Gtk-CRITICAL **: gtk_tree_view_insert_column: assertion `gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_FIXED' failed

p.s > Yes i am calling setupTreeView(), i just posted the relevant code.

Code:

using System;
using System.IO ;
using Gtk;
using System.Net;

using System.Net.Sockets;

public class MainWindow: Gtk.Window
{
   
   protected Gtk.TreeView treeView;

   public MainWindow (): base ("")
   {
      Stetic.Gui.Build (this, typeof(MainWindow));
      
      Gtk.TreeView treeView = new Gtk.TreeView ();
      
   }
   
   public void setupTreeView()
   {
   
      Gtk.TreeView treeView = new Gtk.TreeView();
      Gtk.ListStore emailList = new Gtk.ListStore (typeof (string),  typeof (string));
   
      Gtk.TreeViewColumn sender = new Gtk.TreeViewColumn ();
      sender.Title = "Sender";
 
      Gtk.TreeViewColumn subject = new Gtk.TreeViewColumn ();
      subject.Title = "Subject";

      treeView.AppendColumn(sender);
      treeView.AppendColumn(subject);

      treeView.Model = emailList;   

   }
}

[/quote]

Micah Carrick · **Posted:** Thu Jan 18, 2007 8:34 pm

Quote:

Gtk-CRITICAL **: gtk_tree_view_insert_column: assertion `gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_FIXED' failed

I'm not workin in mono myself, but this error seems to be saying that you need to set the column sizing to fixed. From the GTK API for the gtk_tree_view_insert_column() function:

Quote:

This inserts the column into the tree_view at position. If position is -1, then the column is inserted at the end. If tree_view has "fixed_height" mode enabled, then column must have its "sizing" property set to be GTK_TREE_VIEW_COLUMN_FIXED.

Therefore, you can probably specify a fixed sizing using something like:

Code:

sender.Sizing = Fixed;
subject.Title = Fixed;

Here's the mono docs for it since I don't know mono: http://www.go-mono.com/docs/index.aspx?link=T%3AGtk.TreeViewColumn

Or you can disable "fixed height mode" using something like:

Code:

treeView.FixedHeightMode = false;

clash · **Joined:** Wed Jan 17, 2007 6:26 pm **Posts:** 5

Thanks a million that sorted it :)

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TreevIew columns not showing.

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