From f3a4129ebfa8de431ad11b5e9598d3fca12645a6 Mon Sep 17 00:00:00 2001
From: Paolo Tosco <paolo.tosco.mail@gmail.com>
Date: Sat, 20 Sep 2025 15:58:15 +0200
Subject: [PATCH 1/3] Set event manual reset flag to true

---
 jupyter_client/win_interrupt.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/jupyter_client/win_interrupt.py b/jupyter_client/win_interrupt.py
index 1ba2c3af..bcd03232 100644
--- a/jupyter_client/win_interrupt.py
+++ b/jupyter_client/win_interrupt.py
@@ -34,7 +34,7 @@ class SECURITY_ATTRIBUTES(ctypes.Structure):  # noqa
 
     return ctypes.windll.kernel32.CreateEventA(  # type:ignore[attr-defined]
         sa_p,
-        False,
+        True,
         False,
         "",  # lpEventAttributes  # bManualReset  # bInitialState
     )  # lpName

From de72b45023679c70b9963644ad16251cdee5a7e7 Mon Sep 17 00:00:00 2001
From: Paolo Tosco <paolo.tosco.mail@gmail.com>
Date: Fri, 17 Oct 2025 20:00:14 +0200
Subject: [PATCH 2/3] address review comment

---
 jupyter_client/win_interrupt.py | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

diff --git a/jupyter_client/win_interrupt.py b/jupyter_client/win_interrupt.py
index bcd03232..873cdf93 100644
--- a/jupyter_client/win_interrupt.py
+++ b/jupyter_client/win_interrupt.py
@@ -31,10 +31,26 @@ class SECURITY_ATTRIBUTES(ctypes.Structure):  # noqa
     sa.nLength = ctypes.sizeof(SECURITY_ATTRIBUTES)
     sa.lpSecurityDescriptor = 0
     sa.bInheritHandle = 1
+    # ensure backward compatibility with older ParentPollerWindows
+    # implementations which relied on bManualReset to be set to False
+    # upon event creation
+    MANUAL_RESET_ATTR = "manual_reset"
+    if not hasattr(create_interrupt_event, MANUAL_RESET_ATTR):
+        manual_reset = False
+        try:
+            from ipykernel.parentpoller import ParentPollerWindows
+            if hasattr(ParentPollerWindows, "reset_event"):
+                manual_reset = True
+        except ImportError:
+            pass
+        finally:
+            setattr(create_interrupt_event, MANUAL_RESET_ATTR, manual_reset)
+    else:
+        manual_reset = getattr(create_interrupt_event, MANUAL_RESET_ATTR)
 
     return ctypes.windll.kernel32.CreateEventA(  # type:ignore[attr-defined]
         sa_p,
-        True,
+        manual_reset,
         False,
         "",  # lpEventAttributes  # bManualReset  # bInitialState
     )  # lpName

From 6b1125f37bedfa4d32001eda52927118a2987d22 Mon Sep 17 00:00:00 2001
From: "pre-commit-ci[bot]"
 <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Date: Fri, 17 Oct 2025 18:01:03 +0000
Subject: [PATCH 3/3] [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci
---
 jupyter_client/win_interrupt.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/jupyter_client/win_interrupt.py b/jupyter_client/win_interrupt.py
index 873cdf93..3c673ff6 100644
--- a/jupyter_client/win_interrupt.py
+++ b/jupyter_client/win_interrupt.py
@@ -39,6 +39,7 @@ class SECURITY_ATTRIBUTES(ctypes.Structure):  # noqa
         manual_reset = False
         try:
             from ipykernel.parentpoller import ParentPollerWindows
+
             if hasattr(ParentPollerWindows, "reset_event"):
                 manual_reset = True
         except ImportError: