Issue #20035: Reimplement tkinter._fix module as a C function.
The new private C function makes no permanent changes to the environment
and is #ifdef'd out on non-Windows platforms.
diff --git a/PCbuild/_tkinter.vcxproj b/PCbuild/_tkinter.vcxproj
index e1408a1..f3185eb 100644
--- a/PCbuild/_tkinter.vcxproj
+++ b/PCbuild/_tkinter.vcxproj
@@ -63,6 +63,7 @@
<ClCompile>
<AdditionalIncludeDirectories>$(tcltkDir)include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
<PreprocessorDefinitions>WITH_APPINIT;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+ <PreprocessorDefinitions Condition="'$(BuildForRelease)' != 'true'">Py_TCLTK_DIR="$(tcltkDir.TrimEnd('\').Replace('\', '\\'))";%(PreprocessorDefinitions)</PreprocessorDefinitions>
</ClCompile>
<Link>
<AdditionalDependencies>$(tcltkLib);%(AdditionalDependencies)</AdditionalDependencies>