[TCLCORE] setting iconbitmap from within wish

[Hanspeter R. <ha...@ro...>]

Hello,

I'm trying to set the iconbitmap from within wish (tk-application).
In a book I've read the following:

wm iconbitmap . @bitmapfile

Unfortunately this has no effect in Icewm.
How can I set the icon within wish?

-Hanspeter