bug#28189: 26.0.50; Emacs uses deprecated function gtk_window_parse_geometry

[martin rudalics]

> What thread exactly are you referring to? Most of these bug reports haven't
> seen any discussion so far, but maybe I missed a thread.
> Also aren't these bugs about the menu par? My patch is for popup menus, it
> doesn't touch the menu bar code at all.

AFAICT it's about menus popped up either from the menu bar or via mouse
clicks.  The thread starts with

bug#25064: 25.1; Menus are off-screen

where the poster doesn't tell much about the kind of menus.  For
bug#26139 which was merged with the former the poster says

  The problem is that all menus and pop ups are never visible. Pop ups
  show a narrow line at the top left of the screen, so I'm assuming that
  all of them may be off screen.

For bug#26855, merged as well, the poster says

  Menus (e.g. from the menubar) are appearing off screen.

And for bug#27131 (also merged) the poster says:

  Could be gtk problem. When running emacs on Fedora 25 with either
  cygwin X or vcxsrv as the x-server running on Windows 10 or Windows 7,
  menus appear off screen.

I have no idea whether this is a scaling issue or some principal
Emacs/GTK 3.22 incompatibility.  And I had no idea what to tell the
posters so there was no discussion.  Bug#27667 which looks similar seems
to be related to scaling.  That one mentions a tiny rectangle which also
made it into bug#28375.  Both built with GTK 3.22 as well.

martin