sperber(a)informatik.uni-tuebingen.de (Michael Sperber [Mr. Preprocessor]) writes: That's because creating widgets built on top of the X toolkit is something very *very* obscure ;-) No. Actually, Xt widgets creation involves calls to different functions stored in the Widget Class structure (emacsFrameClassRec). Xt calls them automatically, and that's why a grep gave you nothing. You might want to check out the following functions: EmacsFrameClassInitialize (void); EmacsFrameInitialize (Widget, Widget, ArgList, Cardinal *); EmacsFrameRealize (Widget, XtValueMask*, XSetWindowAttributes*); and likely in your case EmacsFrameResize (Widget widget); - class_initialize is called only once (when creating the first widget of this class). - initialize and realize are called for each new instance of this widget class. Hope this helps. -- / / _ _ Didier Verna http://www.inf.enst.fr/~verna/ - / / - / / /_/ / E.N.S.T. INF C214 mailto:verna＠inf.enst.fr /_/ / /_/ / /__ / 46 rue Barrault Tel. (33) 01 45 81 80 72 75634 Paris cedex 13 Fax. (33) 01 45 81 31 19