GTK tree view/model/selection question

elluva · 05-21-2004, 06:48 AM

owkay,

I usually program java, but because java is some damned slow and eats up to many resources, I began to do some C programming. I know the basics and created some small apps, but now I am working on a my first GTK app. So be nice to this GTK noob

...

I made window with a GtkTreeView (with a GtkListStore and GtkTreeSelection). I am able to add things to it with a dialog box, but now I'd like to make some function to remove the selected entry in the list.

How should I do this? I noticed the function gtk_tree_selection_get_selected_rows which gives me a GList* but what next? I know I can get the selection paths out of it (which should be just one row since I've set the mode on GTK_SELECTION_SINGLE), but how do you remove those paths from the model?

thanks for all help,
elluva

The_Nerd · 05-21-2004, 10:36 AM

Well... Though I don't remember too well, I have done this before. I think there is a gtk function to remove an item from a tree. Look into the gtk tuts over at www.gtk.org, or try google. If google, do a search for some of the other tree functions, and see if you can find it that way. Keep trying, don't give up, you'll get it.

elluva · 05-21-2004, 10:41 AM

I know, I won't give up. It really isn't in the API. I don't know much about C and this probably isn't right, but could it be that you just have to free that path and then send a signal to the model (there is a function for that)?

The_Nerd · 05-21-2004, 10:42 AM

Try looking into:

gtk_tree_remove_items ();

Or:

g_list_remove ()

I did a quick search to find these...

elluva · 05-21-2004, 10:43 AM

Nope, I wasn't using the deprecated GtkTree object, but the MVC-based GtkTreeView and GtkListStore. Maybee someone can help me out... plz

The_Nerd · 05-21-2004, 10:51 AM

Got it! Here:

Code:

GtkCTreeNode *is_node(GtkCTree *ctree, GtkCTreeNode *node, char *name)
{
	gchar *temp;
	GtkCTreeNode *sibling;

	if (node==NULL) return rootNode;

	sibling=GTK_CTREE_ROW(node)->children;
	temp=(gchar *)malloc(MAX_FILE_LEN);
	if (temp==NULL) 
	{
		printf("\ncouldn't allocate memory!");
		return NULL;
	}

	while(sibling!=NULL)
	{
		gtk_ctree_get_node_info(GTK_CTREE(ctree), GTK_CTREE_NODE(sibling), &temp, NULL, NULL, NULL, NULL, NULL, NULL, NULL);	
		if (strcmp((char *)temp, name)==0) return sibling;
		//printf("\nName: %s", temp);
		sibling=GTK_CTREE_ROW(sibling)->sibling;
	}
return NULL;
}

node = is_node(Tree, parent, "item1");
gtk_ctree_remove_node(GTK_CTREE(Tree), node);

This is the code I used to remove a item from a tree by name This might help you though.

Btw, this is Gtk+-1.2

elluva · 05-21-2004, 10:55 AM

oops, posted at the same time... well I didn't use Gtk+-1.2 but Gtk+-2 so I can't really use this. Sorry, i appreciate your aswer.

elluva · 05-21-2004, 01:59 PM

owkay, I found the answer by googling to it, for everyone that has the same question:
http://scentric.net/tutorial/sec-tre...emove-row.html

The_Nerd · 05-22-2004, 12:19 PM