add type hints to ImageCms.get_display_profile

Tests/test_imagecms.py

@@ -4,13 +4,14 @@ import datetime
 import os
 import re
 import shutil
+import sys
 from io import BytesIO
 from pathlib import Path
 from typing import Any
 
 import pytest
 
-from PIL import Image, ImageMode, features
+from PIL import Image, ImageMode, ImageWin, features
 
 from .helper import (
     assert_image,
@@ -213,6 +214,10 @@ def test_display_profile() -> None:
     # try fetching the profile for the current display device
     ImageCms.get_display_profile()
 
+    if sys.platform == "win32":
+        ImageCms.get_display_profile(ImageWin.HDC(0))
+        ImageCms.get_display_profile(ImageWin.HWND(0))
+
 
 def test_lab_color_profile() -> None:
     ImageCms.createProfile("LAB", 5000)

src/PIL/ImageCms.py

@@ -23,7 +23,7 @@ import operator
 import sys
 from enum import IntEnum, IntFlag
 from functools import reduce
-from typing import Any, BinaryIO
+from typing import Any, BinaryIO, SupportsInt
 
 from . import Image, __version__
 from ._deprecate import deprecate
@@ -341,7 +341,7 @@ class ImageCmsTransform(Image.ImagePointHandler):
         return im
 
 
-def get_display_profile(handle=None):
+def get_display_profile(handle: SupportsInt | None = None) -> ImageCmsProfile | None:
     """
     (experimental) Fetches the profile for the current display device.
 
@@ -351,12 +351,12 @@ def get_display_profile(handle=None):
     if sys.platform != "win32":
         return None
 
-    from . import ImageWin
+    from . import ImageWin  # type: ignore[unused-ignore, unreachable]
 
     if isinstance(handle, ImageWin.HDC):
-        profile = core.get_display_profile_win32(handle, 1)
+        profile = core.get_display_profile_win32(int(handle), 1)
     else:
-        profile = core.get_display_profile_win32(handle or 0)
+        profile = core.get_display_profile_win32(int(handle or 0))
     if profile is None:
         return None
     return ImageCmsProfile(profile)