bpo-34217: Use lowercase for windows headers (GH-8472)
(cherry picked from commit e6a4755e6793942b950c1595e0c34bd66a0ee13e)
Co-authored-by: Erik Janssens <erik.janssens@conceptive.be>
diff --git a/Modules/_io/_iomodule.c b/Modules/_io/_iomodule.c
index 6674465..0d8a638 100644
--- a/Modules/_io/_iomodule.c
+++ b/Modules/_io/_iomodule.c
@@ -21,7 +21,7 @@
#endif /* HAVE_SYS_STAT_H */
#ifdef MS_WINDOWS
-#include <Windows.h>
+#include <windows.h>
#endif
/* Various interned strings */
diff --git a/Modules/socketmodule.c b/Modules/socketmodule.c
index c264d33..ea01a28 100644
--- a/Modules/socketmodule.c
+++ b/Modules/socketmodule.c
@@ -303,7 +303,7 @@
# endif
/* Provides the IsWindows7SP1OrGreater() function */
-#include <VersionHelpers.h>
+#include <versionhelpers.h>
/* remove some flags on older version Windows during run-time.
https://msdn.microsoft.com/en-us/library/windows/desktop/ms738596.aspx */
diff --git a/Tools/msi/bundle/bootstrap/pch.h b/Tools/msi/bundle/bootstrap/pch.h
index 6a66fa5..b0aa511 100644
--- a/Tools/msi/bundle/bootstrap/pch.h
+++ b/Tools/msi/bundle/bootstrap/pch.h
@@ -15,7 +15,7 @@
#include <windows.h>
#include <gdiplus.h>
-#include <Uxtheme.h>
+#include <uxtheme.h>
#include <msiquery.h>
#include <objbase.h>
#include <shlobj.h>