Usually this means you've put a widget inside a container more than once. Often because you've copied and pasted a function call and forgot to change one of the parameters. Noah On Sun, Jun 01, 2003 at 11:53:33 -0600, Hari Prasad Nadig wrote: > I'm using fixed container to pack the xpm files on a frame. But when I declare a pixmap, add it to fixed container, I'm getting this error onn runtime.. > Somebody please help me.. > > > Gtk-CRITICAL **: file gtkwidget.c: line 3357 (gtk_widget_set_parent): assertion `widget->parent == NULL' failed. >