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

terryjreedy · web-flow · commit 9beaef6225cd · 2018-08-02T22:50:01.000-04:00
Some MacOS-tk combinations need .update_idletasks().
The call is both unneeded and innocuous on Linux and Windows.
Patch by Kevin Waltzer.
diff --git a/Lib/idlelib/calltip_w.py b/Lib/idlelib/calltip_w.py
@@ -72,6 +72,7 @@ def showtip(self, text, parenleft, parenright):
                            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,
diff --git a/Misc/NEWS.d/next/IDLE/2018-08-02-22-16-42.bpo-34275.Iu0d7t.rst b/Misc/NEWS.d/next/IDLE/2018-08-02-22-16-42.bpo-34275.Iu0d7t.rst
@@ -0,0 +1,2 @@
+Make IDLE calltips always visible on Mac. Some MacOS-tk combinations need
+.update_idletasks(). Patch by Kevin Walzer.

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,2 @@`
	`1`	`+Make IDLE calltips always visible on Mac. Some MacOS-tk combinations need`
	`2`	`+.update_idletasks(). Patch by Kevin Walzer.`