From 484b2f75f254fd6831ae4547a5bd3e9238d6da8a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Moses=20Palm=C3=A9r?= <mosespalmer@gmail.com>
Date: Tue, 29 Nov 2022 18:49:47 +0100
Subject: [PATCH] Regenerate icon on resolution change

---
 lib/pystray/_util/win32.py |  1 +
 lib/pystray/_win32.py      | 11 +++++++++++
 2 files changed, 12 insertions(+)

diff --git a/lib/pystray/_util/win32.py b/lib/pystray/_util/win32.py
index c053e9d..df65f5b 100644
--- a/lib/pystray/_util/win32.py
+++ b/lib/pystray/_util/win32.py
@@ -23,6 +23,7 @@
 
 
 WM_CREATE = 0x0001
+WM_DISPLAYCHANGE = 0x007E
 WM_NCCREATE = 0x0081
 WM_LBUTTONUP = 0x0202
 WM_RBUTTONUP = 0x0205
diff --git a/lib/pystray/_win32.py b/lib/pystray/_win32.py
index 0768daf..ea4c832 100644
--- a/lib/pystray/_win32.py
+++ b/lib/pystray/_win32.py
@@ -40,6 +40,7 @@ def __init__(self, *args, **kwargs):
         # This is a mapping from win32 event codes to handlers used by the
         # mainloop
         self._message_handlers = {
+            win32.WM_DISPLAYCHANGE: self._on_display_change,
             win32.WM_STOP: self._on_stop,
             win32.WM_NOTIFY: self._on_notify,
             win32.WM_TASKBARCREATED: self._on_taskbarcreated}
@@ -171,6 +172,16 @@ def _mainloop(self):
                 win32.DestroyMenu(hmenu)
             self._unregister_class(self._atom)
 
+    def _on_display_change(self, wparam, lparam):
+        """Handles ``WM_DISPLAYCHANGE``.
+
+        This method updates the icon to prevent blurring when changing
+        resolutions.
+        """
+        if self.visible:
+            self._hide()
+            self._show()
+
     def _on_stop(self, wparam, lparam):
         """Handles ``WM_STOP``.