Re: success with GtkTreeView

[Scott Andrew Baillie <sbaillie bigpond net au>]

On Thu, 2003-01-02 at 02:14, Carl B. Constantine wrote:
> Ok, you can ignore my previous message. I did get it work by creating
> another project (gtk2 only) and copy/paste the relevant code bits in.
>
> The good news is I used Glade to create a GtkTreeView object. I then
> grabbed a pointer to that object using lookup_widget, created a
> GtkListStore and set the GtkTreeView up to use that list store. I then
> started creating columns and adding them as showin in "Tree and List
> Widget" in the Gtk+ 2.0 API docs on the website, and also some help from
> some of you (special thanks to Harring Figueirdo on the Glade-Users
> list -- hmm, Figueirdo, is that Portuguese?)
>
> However, one of the things I wanted to try was to set the heading text
> to be red, like shown in the API reference, but for some reason it
> doesn't work. See for yourself at:
>
> http://www.duckwing.ca/screenshots/gtktreeview.jpg
>
> Notice the code behind "window1" shows creating the cell renderer and
> setting the text to red using g_object_set:
>
> renderer = gtk_cell_renderer_text_new();
> g_object_set( G_OBJECT(renderer), "foreground", "red", NULL);
>
> but when I create the column and append it to the view, the text is not
> red like I *thought* it should be:
>
> column = gtk_tree_view_column_new_with_attributes("Shift", 
>     renderer, "text", SHIFT_COLUMN, NULL);
> gtk_tree_view_append_column(GTK_TREE_VIEW(theTreeView), column);
>
> This is pretty much straight from the API Reference docs. Any ideas as
> to why this is happening? Do the headings for the columns maybe not
> allow this?

Hi Carl,

I had the same problem with the red foreground that you did.

I did get it to work with a different method.

See following code :

void* TreeView_create_tree_model(void* object)
{
  GtkTreeStore *treeStore;
  GtkCellRenderer *renderer;
  GtkTreeViewColumn *column;
  GType* pType=g_malloc((1+STRING_COLUMN)*sizeof(GType));
  GtkTreeView *treeView=(GtkTreeView*)object;

  pType[POINTER_COLUMN]=G_TYPE_POINTER;
  pType[FOREGROUND_COLUMN]=G_TYPE_STRING;
  pType[FONT_COLUMN]=G_TYPE_STRING;
  pType[STYLE_COLUMN]=G_TYPE_INT;
  pType[WEIGHT_COLUMN]=G_TYPE_INT;
  pType[BACKGROUND_COLUMN]=G_TYPE_STRING;
  pType[STRING_COLUMN]=G_TYPE_STRING;

  treeStore=gtk_tree_store_newv(1+STRING_COLUMN,pType); 
  g_free(pType);

  gtk_tree_view_set_model(GTK_TREE_VIEW(treeView),GTK_TREE_MODEL(treeStore)); 

  renderer = gtk_cell_renderer_text_new ();
  column = gtk_tree_view_column_new_with_attributes ("ColumnTitle",
                                                   renderer,
                                                   "text", STRING_COLUMN,
                                                   "foreground", FOREGROUND_COLUMN,
                                                   "font", FONT_COLUMN,
                                                   "style", STYLE_COLUMN,
                                                   "weight", WEIGHT_COLUMN,
                                                   "background", BACKGROUND_COLUMN,
                                                   NULL);
  gtk_tree_view_append_column(GTK_TREE_VIEW(treeView),column);

  return(treeStore);
}

void TreeView_set_foreground_attribute(void* treeModel,void* iter,const char* str)
{
  GValue value = { 0 };

  g_value_init(&value,G_TYPE_STRING); 
  g_value_set_string(&value,str);
  gtk_tree_store_set_value((GtkTreeStore*)treeModel,(GtkTreeIter*)iter,FOREGROUND_COLUMN,&value); 
}


Regards,

Scott.