[reactos] 01/02: [ATL] Prohibit the use of AddRef/Release on objects inside CComPtr

[Mark Jansen]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=a414c88daeb4ba91e0cc12...

commit a414c88daeb4ba91e0cc121f7cfbf51ef2d3151a
Author:     Mark Jansen [e-mail]
AuthorDate: Sun Sep 18 20:57:38 2022 +0200
Commit:     Mark Jansen [e-mail]
CommitDate: Sun Oct 2 00:38:23 2022 +0200

[ATL] Prohibit the use of AddRef/Release on objects inside CComPtr

This mimics what MS's CComPtr is doing:
    https://learn.microsoft.com/en-us/cpp/atl/reference/ccomptrbase-class?view=m...
    The reasoning behind this is that AddRef/Release is handled by the CComPtr,
    so anyone calling that is most likely not using the CComPtr correct.
---
 sdk/lib/atl/atlcomcli.h | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/sdk/lib/atl/atlcomcli.h b/sdk/lib/atl/atlcomcli.h
index cba78101d2d..e6effc2ffcf 100644
--- a/sdk/lib/atl/atlcomcli.h
+++ b/sdk/lib/atl/atlcomcli.h
@@ -59,6 +59,13 @@ inline HRESULT AtlHresultFromLastError() throw()
     return HRESULT_FROM_WIN32(dwError);
 }

+template <class T>
+class _NoAddRefReleaseOnCComPtr : public T
+{
+  private:
+    virtual ULONG STDMETHODCALLTYPE AddRef() = 0;
+    virtual ULONG STDMETHODCALLTYPE Release() = 0;
+};

template<class T>
 class CComPtr
@@ -173,10 +180,10 @@ public:
         return p;
     }

-    T *operator -> ()
+    _NoAddRefReleaseOnCComPtr<T> *operator -> () const
     {
         ATLASSERT(p != NULL);
-        return p;
+        return (_NoAddRefReleaseOnCComPtr<T> *)p;
     }
 };