2019-09-07 15:51:30 +00:00
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#include <windows.h>
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#include <stdio.h>
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#include <olectl.h>
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#include <assert.h>
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// Windows "Activation Context" work:
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// Our .pyd extension modules are generally built without a manifest (ie,
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// those included with Python and those built with a default distutils.
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// This requires we perform some "activation context" magic when loading our
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// extensions. In summary:
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// * As our DLL loads we save the context being used.
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// * Before loading our extensions we re-activate our saved context.
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// * After extension load is complete we restore the old context.
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// As an added complication, this magic only works on XP or later - we simply
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// use the existence (or not) of the relevant function pointers from kernel32.
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// See bug 4566 (http://python.org/sf/4566) for more details.
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef BOOL (WINAPI * PFN_GETCURRENTACTCTX)(HANDLE *);
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typedef BOOL (WINAPI * PFN_ACTIVATEACTCTX)(HANDLE, ULONG_PTR *);
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typedef BOOL (WINAPI * PFN_DEACTIVATEACTCTX)(DWORD, ULONG_PTR);
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typedef BOOL (WINAPI * PFN_ADDREFACTCTX)(HANDLE);
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typedef BOOL (WINAPI * PFN_RELEASEACTCTX)(HANDLE);
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// locals and function pointers for this activation context magic.
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extern HANDLE PyWin_DLLhActivationContext;
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extern PFN_GETCURRENTACTCTX pfnGetCurrentActCtx;
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extern PFN_ACTIVATEACTCTX pfnActivateActCtx;
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extern PFN_DEACTIVATEACTCTX pfnDeactivateActCtx;
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extern PFN_ADDREFACTCTX pfnAddRefActCtx;
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extern PFN_RELEASEACTCTX pfnReleaseActCtx;
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void _MyLoadActCtxPointers();
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ULONG_PTR _My_ActivateActCtx();
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void _My_DeactivateActCtx(ULONG_PTR cookie);
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#ifdef __cplusplus
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}
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#endif
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