Tray dark theme (#591)

utils/win32_theme.py

@@ -0,0 +1,35 @@
+from __future__ import annotations
+
+import sys
+
+def is_windows_dark_theme() -> bool:
+    if sys.platform != "win32":
+        return False
+
+    try:
+        import winreg
+        key = winreg.OpenKey(winreg.HKEY_CURRENT_USER, r"Software\Microsoft\Windows\CurrentVersion\Themes\Personalize")
+        value, _ = winreg.QueryValueEx(key, "AppsUseLightTheme")
+        return value == 0
+    except Exception:
+        return False
+
+def apply_windows_dark_theme() -> None:
+    try:
+        import ctypes
+        uxtheme = ctypes.windll.uxtheme
+        
+        try:
+            set_preferred = uxtheme[135]
+            result = set_preferred(2)
+            if result == 0:
+                flush = uxtheme[136]
+                flush()
+        except Exception:
+            try:
+                allow_dark = uxtheme[135]
+                allow_dark(True)
+            except Exception:
+                pass
+    except Exception:
+        pass

windows.py

@@ -32,6 +32,10 @@ except ImportError:
 
 import proxy.tg_ws_proxy as tg_ws_proxy
 
+from utils.win32_theme import (
+    is_windows_dark_theme, 
+    apply_windows_dark_theme,
+)
 from utils.tray_common import (
     APP_NAME, DEFAULT_CONFIG, FIRST_RUN_MARKER, IS_FROZEN, LOG_FILE,
     acquire_lock, bootstrap, check_ipv6_warning, ctk_run_dialog,
@@ -316,6 +320,10 @@ def run_tray() -> None:
     global _tray_icon, _config
 
     _config = load_config()
+
+    if is_windows_dark_theme:
+        apply_windows_dark_theme()
+
     bootstrap(_config)
 
     if pystray is None or Image is None or ctk is None: