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dxvk/include/native/windows/unknwn.h
Ellie Hermaszewska b81536458f
include: Implement some small utilities in native headers (#3361)
* Add QueryInterface template to IUnknown

As described here https://learn.microsoft.com/en-us/windows/win32/api/unknwn/nf-unknwn-iunknown-queryinterface\(q\)\?source\=recommendations

* Implement DEFINE_ENUM_FLAG_OPERATORS

* Add REFCLSID to windows_base.h

This is used by the latest d3d12 headers for D3D12GetInterface
2023-05-03 12:39:51 +01:00

53 lines
1.2 KiB
C++

#pragma once
#include "windows_base.h"
typedef interface IUnknown IUnknown;
DEFINE_GUID(IID_IUnknown, 0x00000000,0x0000,0x0000,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x46)
#ifdef __cplusplus
struct IUnknown {
public:
virtual HRESULT QueryInterface(REFIID riid, void** ppvObject) = 0;
template<class Q>
HRESULT STDMETHODCALLTYPE QueryInterface(Q **pp) {
return QueryInterface(__uuidof(Q), (void **)pp);
}
virtual ULONG AddRef() = 0;
virtual ULONG Release() = 0;
};
#else
typedef struct IUnknownVtbl
{
BEGIN_INTERFACE
HRESULT (STDMETHODCALLTYPE *QueryInterface)(
IUnknown *This,
REFIID riid,
void **ppvObject
);
ULONG (STDMETHODCALLTYPE *AddRef)(IUnknown *This);
ULONG (STDMETHODCALLTYPE *Release)(IUnknown *This);
END_INTERFACE
} IUnknownVtbl;
interface IUnknown
{
CONST_VTBL struct IUnknownVtbl *lpVtbl;
};
#define IUnknown_AddRef(This) ((This)->lpVtbl->AddRef(This))
#define IUnknown_Release(This) ((This)->lpVtbl->Release(This))
#endif // __cplusplus
DECLARE_UUIDOF_HELPER(IUnknown, 0x00000000,0x0000,0x0000,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x46)
#define IID_PPV_ARGS(ppType) __uuidof(decltype(**(ppType))), [](auto** pp) { (void)static_cast<IUnknown*>(*pp); return reinterpret_cast<void**>(pp); }(ppType)