* ext/tk/tkutil/tkutil.c (tk_conv_args): forget to revert

  thread_critical and gc_disable when raise ArgumentError.
* ext/tk/lib/remote-tk.rb: RemoteTkIp doesn't need to include TkUtil.
* ext/tk/tcltklib.c: add TclTkIp#has_mainwindow? method.
* ext/tk/lib/tk.rb: add Tk.has_mainwindow? method.
* ext/tk/lib/multi-tk.rb: add MultiTkIp#has_mainwindow? method.
* ext/tk/lib/remote-tk.rb: add RemoteTkIp#has_mainwindow? method.
* ext/tk/lib/multi-tk.rb: slave IP fail to exit itself when $SAFE==4.
* ext/tk/lib/multi-tk.rb: remove constants from MultiTkIp module to
  avoid access from external.
* ext/tk/lib/multi-tk.rb: check_root flag is ignored on slave IPs'
  mainloop.
* ext/tk/lib/multi-tk.rb: hang-up Tk.mainloop called on a slave IP
  with $SAFE==4.
* ext/tk/lib/multi-tk.rb: MultiTkIp#bg_eval_proc doesn't work
  properly.
* ext/tk/lib/multi-tk.rb: add MultiTkIp#set_cb_error(proc) and
  cb_error(exc) to log errors at callbacks on safe slave IPs.
* ext/tk/lib/multi-tk.rb: fail to get an available slave IP object
  when call Tk.mainloop in the block which is given to new_* method,
  because cannot finish initialize while the root widget is alive.
* ext/tk/lib/multi-tk.rb: fail to control a slave IP when Tk.mainloop
  runs on the IP.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@8818 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 5 insertions, 0 deletions

diff --git a/ext/tk/MANUAL_tcltklib.eng b/ext/tk/MANUAL_tcltklib.eng
index 9e7bd20d37..1db61f228e 100644
--- a/ext/tk/MANUAL_tcltklib.eng
+++ b/ext/tk/MANUAL_tcltklib.eng
@@ -310,6 +310,11 @@ class TclTkIp
        : Check whether the interpreter is already deleted.
        : If deleted, returns true. 
 
+    has_mainwindow?
+       : Check whether the interpreter has a MainWindow (root widget).
+       : If has, returns true. If doesn't, returns false.  
+       : If IP is already deleted, returns nil. 
+
     restart
        : Restart Tk part of the interpreter. 
        : Use this when you need Tk functions after destroying the