<p>@eryksun的方法奏效了。在</p>
<p>问题仍然存在,为什么<code>ctypes.cdll.msvcrt</code>和{<cd2>}是这样实现的?他们应该只使用@eryksun的方法返回python清单中的dll,对吗?在</p>
<pre><code>from ctypes import *
from ctypes.wintypes import *
kernel32 = WinDLL("kernel32")
ACTCTX_FLAG_PROCESSOR_ARCHITECTURE_VALID = 0x001
ACTCTX_FLAG_LANGID_VALID = 0x002
ACTCTX_FLAG_ASSEMBLY_DIRECTORY_VALID = 0x004
ACTCTX_FLAG_RESOURCE_NAME_VALID = 0x008
ACTCTX_FLAG_SET_PROCESS_DEFAULT = 0x010
ACTCTX_FLAG_APPLICATION_NAME_VALID = 0x020
ACTCTX_FLAG_HMODULE_VALID = 0x080
DEACTIVATE_ACTCTX_FLAG_FORCE_EARLY_DEACTIVATION = 1
INVALID_HANDLE_VALUE = HANDLE(-1).value
ULONG_PTR = WPARAM # pointer-sized unsigned integer
class ACTCTX(Structure):
_fields_ = (("cbSize", ULONG),
("dwFlags", DWORD),
("lpSource", LPCWSTR),
("wProcessorArchitecture", USHORT),
("wLangId", LANGID),
("lpAssemblyDirectory", LPCWSTR),
("lpResourceName", LPCWSTR),
("lpApplicationName", LPCWSTR),
("hModule", HMODULE))
def __init__(self, *args, **kwds):
super(ACTCTX, self).__init__(sizeof(self), *args, **kwds)
CreateActCtxW = kernel32.CreateActCtxW
CreateActCtxW.restype = HANDLE
CreateActCtxW.argtypes = (POINTER(ACTCTX),)
ReleaseActCtx = kernel32.ReleaseActCtx
ReleaseActCtx.restype = None
ReleaseActCtx.argtypes = (HANDLE,)
ActivateActCtx = kernel32.ActivateActCtx
ActivateActCtx.argtypes = (HANDLE, POINTER(ULONG_PTR))
DeactivateActCtx = kernel32.DeactivateActCtx
DeactivateActCtx.argtypes = (DWORD, ULONG_PTR)
def getMsvcr90():
ctx = ACTCTX(hModule = cdll.python27._handle
,lpResourceName = c_wchar_p(2)
,dwFlags = ACTCTX_FLAG_HMODULE_VALID | ACTCTX_FLAG_RESOURCE_NAME_VALID
)
hActCtx = CreateActCtxW(byref(ctx))
if hActCtx == INVALID_HANDLE_VALUE:
raise WinError()
cookie = ULONG_PTR()
if not ActivateActCtx(hActCtx, byref(cookie)):
raise WinError()
msvcr90 = CDLL("msvcr90")
if not DeactivateActCtx(0, cookie):
raise WinError()
ReleaseActCtx(hActCtx)
# show DLL path
hModule = HANDLE(msvcr90._handle)
path = (c_wchar * 260)()
kernel32.GetModuleFileNameW(hModule, path, len(path))
print(path.value)
return msvcr90
</code></pre>