Umstellung auf Customtkinter.

.venv/Lib/site-packages/darkdetect/_windows_detect.py

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+from winreg import HKEY_CURRENT_USER as hkey, QueryValueEx as getSubkeyValue, OpenKey as getKey
+
+import ctypes
+import ctypes.wintypes
+
+advapi32 = ctypes.windll.advapi32
+
+# LSTATUS RegOpenKeyExA(
+#     HKEY hKey,
+#     LPCSTR lpSubKey,
+#     DWORD ulOptions,
+#     REGSAM samDesired,
+#     PHKEY phkResult
+# );
+advapi32.RegOpenKeyExA.argtypes = (
+    ctypes.wintypes.HKEY,
+    ctypes.wintypes.LPCSTR,
+    ctypes.wintypes.DWORD,
+    ctypes.wintypes.DWORD,
+    ctypes.POINTER(ctypes.wintypes.HKEY),
+)
+advapi32.RegOpenKeyExA.restype = ctypes.wintypes.LONG
+
+# LSTATUS RegQueryValueExA(
+#     HKEY hKey,
+#     LPCSTR lpValueName,
+#     LPDWORD lpReserved,
+#     LPDWORD lpType,
+#     LPBYTE lpData,
+#     LPDWORD lpcbData
+# );
+advapi32.RegQueryValueExA.argtypes = (
+    ctypes.wintypes.HKEY,
+    ctypes.wintypes.LPCSTR,
+    ctypes.wintypes.LPDWORD,
+    ctypes.wintypes.LPDWORD,
+    ctypes.wintypes.LPBYTE,
+    ctypes.wintypes.LPDWORD,
+)
+advapi32.RegQueryValueExA.restype = ctypes.wintypes.LONG
+
+# LSTATUS RegNotifyChangeKeyValue(
+#     HKEY hKey,
+#     WINBOOL bWatchSubtree,
+#     DWORD dwNotifyFilter,
+#     HANDLE hEvent,
+#     WINBOOL fAsynchronous
+# );
+advapi32.RegNotifyChangeKeyValue.argtypes = (
+    ctypes.wintypes.HKEY,
+    ctypes.wintypes.BOOL,
+    ctypes.wintypes.DWORD,
+    ctypes.wintypes.HANDLE,
+    ctypes.wintypes.BOOL,
+)
+advapi32.RegNotifyChangeKeyValue.restype = ctypes.wintypes.LONG
+
+def theme():
+    """ Uses the Windows Registry to detect if the user is using Dark Mode """
+    # Registry will return 0 if Windows is in Dark Mode and 1 if Windows is in Light Mode. This dictionary converts that output into the text that the program is expecting.
+    valueMeaning = {0: "Dark", 1: "Light"}
+    # In HKEY_CURRENT_USER, get the Personalisation Key.
+    try:
+        key = getKey(hkey, "Software\\Microsoft\\Windows\\CurrentVersion\\Themes\\Personalize")
+        # In the Personalisation Key, get the AppsUseLightTheme subkey. This returns a tuple.
+        # The first item in the tuple is the result we want (0 or 1 indicating Dark Mode or Light Mode); the other value is the type of subkey e.g. DWORD, QWORD, String, etc.
+        subkey = getSubkeyValue(key, "AppsUseLightTheme")[0]
+    except FileNotFoundError:
+        # some headless Windows instances (e.g. GitHub Actions or Docker images) do not have this key
+        return None
+    return valueMeaning[subkey]
+
+def isDark():
+    if theme() is not None:
+        return theme() == 'Dark'
+
+def isLight():
+    if theme() is not None:
+        return theme() == 'Light'
+
+#def listener(callback: typing.Callable[[str], None]) -> None:
+def listener(callback):
+    hKey = ctypes.wintypes.HKEY()
+    advapi32.RegOpenKeyExA(
+        ctypes.wintypes.HKEY(0x80000001), # HKEY_CURRENT_USER
+        ctypes.wintypes.LPCSTR(b'SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Themes\\Personalize'),
+        ctypes.wintypes.DWORD(),
+        ctypes.wintypes.DWORD(0x00020019), # KEY_READ
+        ctypes.byref(hKey),
+    )
+
+    dwSize = ctypes.wintypes.DWORD(ctypes.sizeof(ctypes.wintypes.DWORD))
+    queryValueLast = ctypes.wintypes.DWORD()
+    queryValue = ctypes.wintypes.DWORD()
+    advapi32.RegQueryValueExA(
+        hKey,
+        ctypes.wintypes.LPCSTR(b'AppsUseLightTheme'),
+        ctypes.wintypes.LPDWORD(),
+        ctypes.wintypes.LPDWORD(),
+        ctypes.cast(ctypes.byref(queryValueLast), ctypes.wintypes.LPBYTE),
+        ctypes.byref(dwSize),
+    )
+
+    while True:
+        advapi32.RegNotifyChangeKeyValue(
+            hKey,
+            ctypes.wintypes.BOOL(True),
+            ctypes.wintypes.DWORD(0x00000004), # REG_NOTIFY_CHANGE_LAST_SET
+            ctypes.wintypes.HANDLE(None),
+            ctypes.wintypes.BOOL(False),
+        )
+        advapi32.RegQueryValueExA(
+            hKey,
+            ctypes.wintypes.LPCSTR(b'AppsUseLightTheme'),
+            ctypes.wintypes.LPDWORD(),
+            ctypes.wintypes.LPDWORD(),
+            ctypes.cast(ctypes.byref(queryValue), ctypes.wintypes.LPBYTE),
+            ctypes.byref(dwSize),
+        )
+        if queryValueLast.value != queryValue.value:
+            queryValueLast.value = queryValue.value
+            callback('Light' if queryValue.value else 'Dark')