gh-119174: Fix high DPI causes turtledemo(turtle-graphics examples) windows blurry

Lib/idlelib/config.py

@@ -159,7 +159,7 @@ def __init__(self, _utest=False):
         self.userCfg = {}
         self.cfg = {}  # TODO use to select userCfg vs defaultCfg
         # self.blink_off_time = <first editor text>['insertofftime']
-        # See https:/bugs.python.org/issue4630, msg356516.
+        # See https://bugs.python.org/issue4630#msg356516
 
         if not _utest:
             self.CreateConfigHandlers()

Lib/turtledemo/__main__.py

@@ -98,6 +98,7 @@
 
 demo_dir = os.path.dirname(os.path.abspath(__file__))
 darwin = sys.platform == 'darwin'
+win32 = sys.platform == 'win32'
 
 STARTUP = 1
 READY = 2
@@ -131,6 +132,15 @@ def __init__(self, filename=None):
         root.title('Python turtle-graphics examples')
         root.wm_protocol("WM_DELETE_WINDOW", self._destroy)
 
+        # See https://learn.microsoft.com/en-us/windows/win32/api/shellscalingapi/ne-shellscalingapi-process_dpi_awareness
+        if win32:
+            try:
+                import ctypes
+                PROCESS_SYSTEM_DPI_AWARE = 1  # Int required.
+                ctypes.OleDLL('shcore').SetProcessDpiAwareness(PROCESS_SYSTEM_DPI_AWARE)
+            except (ImportError, AttributeError, OSError):
+                pass
+
         if darwin:
             import subprocess
             # Make sure we are the currently activated OS X application

Misc/NEWS.d/next/Library/2024-05-19-18-49-04.gh-issue-119174.5GTv7d.rst

@@ -0,0 +1,2 @@
+Fix high DPI causes turtledemo(turtle-graphics examples) windows blurry
+Patch by Wulian233