GTK＃TreeView确定选择哪个项目

Question

I am new to Gtk and I am using Gtk#. I am using a TreeView component and I wish to know when the user chooses a new entry.

I have tried using the TreeView.Selection.SelectFunction. However, this gets called before the selection is made, which is not what I want. I want to know what the user has just selected, not what was selected before. How do I go about accomplishing this?

Thanks

This is what I currently have

catalogTreeView.Selection.SelectFunction = CategorySelected;


bool CategorySelected(Gtk.TreeSelection selection, Gtk.TreeModel model, Gtk.TreePath path, bool abool) {
    TreeIter iter;


    if (selection.GetSelected (out model, out iter)) {
        Console.WriteLine("abool = " + abool);
        Console.WriteLine("Path of selected row = {0}", model.GetPath (iter));
        Console.WriteLine(model.GetValue (iter, 0));
    }

    return true;
}

Answer 1

You want a handler for the ButtonPressEvent in which you can use the treeview.Selection.GetSelected() operation to retrieve the selected model and iter as you are already. NB. You need to add the GLib.ConnectBeforeAttribute attribute to this event handler and also add the event to the Events list for the treeview. Eg

treeview.Events |= EventMask.ButtonPressMask;
treeview.ButtonPressEvent += YourOnButtonPressEvent;

...

[GLib.ConnectBeforeAttribute]
protected void YourOnButtonPressEvent (object o, ButtonPressEventArgs args)
{
    // code here
}