commit ffd6364745dbeb7269c0e4376b63bf76bc44bcc6
author Miss Islington (bot) <31488909+miss-islington@users.noreply.github.com> Thu Aug 02 20:39:36 2018 -0700
committer GitHub <noreply@github.com> Thu Aug 02 20:39:36 2018 -0700
tree 59be805eab23856af4ce85e14e204d54c3ebd132
parent 34f59a7a7843d8e2c1922c830a99b5b7a022f4be

bpo-34275: Make IDLE calltips always visible on Mac.  (GH-8639)


Some MacOS-tk combinations need .update_idletasks().
The call is both unneeded and innocuous on Linux and Windows.
Patch by Kevin Waltzer.
(cherry picked from commit 9beaef6225cdae972b1cccd5310828cc29bf9d33)

Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>

Lib/idlelib/calltip_w.py

diff --git a/Lib/idlelib/calltip_w.py b/Lib/idlelib/calltip_w.py
index 34531f4..1b1ffc5 100644
--- a/Lib/idlelib/calltip_w.py
+++ b/Lib/idlelib/calltip_w.py
@@ -72,6 +72,7 @@
                            background="#ffffe0", relief=SOLID, borderwidth=1,
                            font = self.widget['font'])
         self.label.pack()
+        tw.update_idletasks()
         tw.lift()  # work around bug in Tk 8.5.18+ (issue #24570)
 
         self.checkhideid = self.widget.bind(CHECKHIDE_VIRTUAL_EVENT_NAME,