To have empty int cells, you can either - use strings, instead of ints, in ListStore as you said - make place for a third value in ListStore, of type bool, and control the "visible" property of the first Cell Renderer with it (see code below) - Use Cell Data Func for ultimate flexibility
And here's the code import gi gi.require_version('Gtk', '3.0') from gi.repository import Gtk class TreeView(Gtk.TreeView): def __init__(self, model): Gtk.TreeView.__init__(self, model) col_a = Gtk.TreeViewColumn('int', Gtk.CellRendererText(), text=0, visible=2) self.append_column(col_a) col_b = Gtk.TreeViewColumn('str', Gtk.CellRendererText(), text=1) self.append_column(col_b) class TreeModel(Gtk.ListStore): def __init__(self): Gtk.ListStore.__init__(self, int, str, bool) self.append([1, '111', True]) self.append([0, 'Hi!', False]) self.append([3, '3', True]) class Window(Gtk.Window): def __init__(self): Gtk.Window.__init__(self, title='Mein Gtk-Fenster') self.set_default_size(400, 300) self.model = TreeModel() self.view = TreeView(self.model) # layout self.layout = Gtk.Grid() self.add(self.layout) self.layout.attach(self.view, 0, 1, 1, 1) self.connect('destroy', Gtk.main_quit) self.show_all() if __name__ == '__main__': win = Window() Gtk.main() Luca 2018-05-08 12:08 GMT+02:00 Luca Bacci <luca.bacci...@gmail.com>: > Hello! > > You can achieve what you want with the "xalign" property of CellRenderers > > col_b = Gtk.TreeViewColumn('str', > Gtk.CellRendererText(xalign=1), > text=1) > > xalign takes a value between 0 and 1. > xalign=0 -> left-justified > xalign=1 -> right-justified > > Luca > > > 2018-05-06 12:01 GMT+02:00 <c.bu...@posteo.jp>: > >> X-Post: https://stackoverflow.com/q/50194505/4865723 >> >> I want to have in a Gtk.TreeView >> >> - empty cells in a "int row" of a TreeView >> - or (as a workaround) a right aligned "string row" >> >> There is a screenshot and example code in the StackOverflow question >> linked in the first line of this post. >> >> The problem is >> >> - When I give 'None' to a 'int row' a '0' is displayed. I would >> expect an empty cell. I want that cell to be >> absolute empty. >> >> - A workaround is to use strings instead of int and just display the >> numbers as strings doing str(int). >> But then the content of each cell is left aligned by default. >> I tried to modify that. But this also has no effect. >> >> I attached the full example. >> _______________________________________________ >> gtk-app-devel-list mailing list >> gtk-app-devel-list@gnome.org >> https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list >> > > _______________________________________________ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list