Replace defining GetModuleFileName with importing from typeinfo.

comtypes/client/_code_cache.py

@@ -11,7 +11,9 @@
 import sys
 import tempfile
 import types
-from ctypes.wintypes import HMODULE, MAX_PATH
+from ctypes.wintypes import MAX_PATH
+
+from comtypes import typeinfo
 
 logger = logging.getLogger(__name__)
 
@@ -85,15 +87,12 @@ def _find_gen_dir():
 ################################################################
 
 SHGetSpecialFolderPath = ctypes.OleDLL("shell32.dll").SHGetSpecialFolderPathW
-GetModuleFileName = ctypes.WinDLL("kernel32.dll").GetModuleFileNameW
 SHGetSpecialFolderPath.argtypes = [
     ctypes.c_ulong,
     ctypes.c_wchar_p,
     ctypes.c_int,
     ctypes.c_int,
 ]
-GetModuleFileName.restype = ctypes.c_ulong
-GetModuleFileName.argtypes = [HMODULE, ctypes.c_wchar_p, ctypes.c_ulong]
 
 CSIDL_APPDATA = 26
 
@@ -139,10 +138,7 @@ def _is_writeable(path):
 def _get_module_filename(hmodule):
     """Call the Windows GetModuleFileName function which determines
     the path from a module handle."""
-    path = ctypes.create_unicode_buffer(MAX_PATH)
-    if GetModuleFileName(hmodule, path, MAX_PATH):
-        return path.value
-    raise ctypes.WinError()
+    return typeinfo.GetModuleFileName(hmodule, MAX_PATH)
 
 
 def _get_appdata_dir():