TreeView does not show anything

TheDarkstar · **Posted:** Sun Mar 01, 2009 8:09 pm

Hello,

I have a problem with GTK TreeView. When I add rows to a TreeView,
the rows are added (the window on which the TreeView sits increases in
height), but I don't see the rows on screen :(. Here the part of my code,
that initializes the ListStore, and adds a test row:

Code:

enum {
  COLUMN_ATTRIBUTE = 0,
  COLUMN_VALUE,
  NUM_COLUMNS
};
GtkTreeViewColumn *column;
GtkCellRenderer *renderer;
GtkTreeIter iter;
GtkTreeView *tvBat1;
GtkListStore *storeBat1;

tvBat1 = GTK_TREE_VIEW(glade_xml_get_widget(gxml, "tvBat1"));

storeBat1 = gtk_list_store_new(NUM_COLUMNS, G_TYPE_STRING, G_TYPE_STRING);
gtk_tree_view_set_model(tvBat1, GTK_TREE_MODEL(storeBat1));

column = gtk_tree_view_column_new();
gtk_tree_view_column_set_title(column, "Attribute");
gtk_tree_view_append_column(GTK_TREE_VIEW(tvBat1), column);
renderer = gtk_cell_renderer_text_new();
gtk_tree_view_column_pack_start(column, renderer, TRUE);
gtk_tree_view_column_add_attribute(column, renderer, "text", COLUMN_ATTRIBUTE);

column = gtk_tree_view_column_new();
gtk_tree_view_column_set_title(column, "Value");
gtk_tree_view_append_column(GTK_TREE_VIEW(tvBat1), column);
renderer = gtk_cell_renderer_text_new();
gtk_tree_view_column_pack_start(column, renderer, TRUE);
gtk_tree_view_column_add_attribute(column, renderer, "text", COLUMN_VALUE);

gtk_list_store_append(storeBat1, &iter);
gtk_list_store_set(storeBat1, &iter, COLUMN_ATTRIBUTE, "TestAttribute", COLUMN_VALUE, "TestValue", -1);

As you can see in the code, I create the GUI with Glade, so probably the error could also be in the Glade file.

tadeboro · **Posted:** Sun Mar 01, 2009 9:26 pm

Hello and welcome to the Gtk+ forums!

As far as I'm concerned, your code snippet is clean.

I created a stand-alone application to be compiled with slightly modified code from your post which works properly here. Try it and post back with the results (and maybe a glade file, if you think the problem lurks in it).

Code:

#include <gtk/gtk.h>

int
main( int    argc,
     char **argv )
{
   GtkWidget         *window;
   GtkWidget         *tree;
   GtkListStore      *store;
   GtkTreeViewColumn *column;
   GtkTreeIter        iter;
   GtkCellRenderer   *renderer;

   gtk_init( &argc, &argv );

   window = gtk_window_new( GTK_WINDOW_TOPLEVEL );
   g_signal_connect( G_OBJECT( window ), "destroy",
                 G_CALLBACK( gtk_main_quit ), NULL );

   tree = gtk_tree_view_new();
   gtk_container_add( GTK_CONTAINER( window ), tree );

   column = gtk_tree_view_column_new();
   gtk_tree_view_column_set_title( column, "Attr" );
   gtk_tree_view_append_column( GTK_TREE_VIEW( tree ), column );
   renderer = gtk_cell_renderer_text_new();
   gtk_tree_view_column_pack_start( column, renderer, TRUE );
   gtk_tree_view_column_add_attribute( column, renderer, "text", 0 );

   column = gtk_tree_view_column_new();
   gtk_tree_view_column_set_title( column, "Val" );
   gtk_tree_view_append_column( GTK_TREE_VIEW( tree ), column );
   renderer = gtk_cell_renderer_text_new();
   gtk_tree_view_column_pack_start( column, renderer, TRUE );
   gtk_tree_view_column_add_attribute( column, renderer, "text", 1 );

   store = gtk_list_store_new( 2, G_TYPE_STRING, G_TYPE_STRING );
   gtk_list_store_append( store, &iter );
   gtk_list_store_set( store, &iter, 0, "Test Attr", 1, "Test Val", -1 );

   gtk_tree_view_set_model( GTK_TREE_VIEW( tree ), GTK_TREE_MODEL( store ) );

   gtk_widget_show_all( window );

   gtk_main();

   return( 0 );
}

TheDarkstar · **Posted:** Sun Mar 01, 2009 9:56 pm

Hallo tadeboro,

thank you for your reply. Your code works, and displays the added row.
So the error must be in the Glade file.
The Glade file is too big to post it here, so I uploaded it to RapidShare:
http://rapidshare.com/files/204165730/Preferences.glade.html

tadeboro · **Posted:** Sun Mar 01, 2009 10:59 pm

Hello.

Looking at your glade file, my experiences tell me that fixed height mode of your tree views may be the problematic thingy in your glade file.

Try removing this option from your tree views and post the results.

TheDarkstar · **Posted:** Mon Mar 02, 2009 6:37 pm

YES! This "fixed height mode" was it. Now it works. Thank you very much.

GTK+ Forums

TreeView does not show anything

Who is online