window sizing, root window size

["Oskar Liljeblad" <osk hem passagen se>]

I guess this has been asked before, but I couldn't find anything about it in
the archives.

How do you in GTK...

  ...set a window's current size (not changing its minimal size)?
  ...set a window's minimal size?
 (...set a window's maximal size, if that's possible?)
  ...get the size of the root window/display?

The last and first one are necessary if you want to implement the --geometry
option.

Oskar Liljeblad (osk@hem.passagen.se)