pythongh-118760: Fix errors in calling Tkinter bindings on Windows

For unknown reasons some arguments are passed as a 1-tuple containing a
Tcl_Obj with type "string" and value "0" what wantobjects is 2.

Lib/tkinter/__init__.py

@@ -1723,9 +1723,13 @@ def _substitute(self, *args):
         def getint_event(s):
             """Tk changed behavior in 8.4.2, returning "??" rather more often."""
             try:
-                return getint(s)
+                return getint(unpack(s))
             except (ValueError, TclError):
                 return s
+        def unpack(s):
+            if isinstance(s, tuple) and len(s) == 1:
+                s, = s
+            return s
 
         nsign, b, f, h, k, s, t, w, x, y, A, E, K, N, W, T, X, Y, D = args
         # Missing: (a, c, d, m, o, v, B, R)
@@ -1754,8 +1758,8 @@ def getint_event(s):
         e.width = getint_event(w)
         e.x = getint_event(x)
         e.y = getint_event(y)
-        e.char = A
-        try: e.send_event = getboolean(E)
+        e.char = unpack(A)
+        try: e.send_event = getboolean(unpack(E))
         except TclError: pass
         e.keysym = K
         e.keysym_num = getint_event(N)

Misc/NEWS.d/next/Library/2024-05-08-21-13-56.gh-issue-118760.mdmH3T.rst

@@ -0,0 +1 @@
+Fix errors in calling Tkinter bindings on Windows.