reactos/dll/shellext/shellbtrfs/factory.h
2017-11-26 14:34:53 +01:00

69 lines
1.7 KiB
C++

/* Copyright (c) Mark Harmstone 2016-17
*
* This file is part of WinBtrfs.
*
* WinBtrfs is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public Licence as published by
* the Free Software Foundation, either version 3 of the Licence, or
* (at your option) any later version.
*
* WinBtrfs is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public Licence for more details.
*
* You should have received a copy of the GNU Lesser General Public Licence
* along with WinBtrfs. If not, see <http://www.gnu.org/licenses/>. */
#pragma once
extern LONG objs_loaded;
typedef enum {
FactoryUnknown,
FactoryIconHandler,
FactoryContextMenu,
FactoryPropSheet,
FactoryVolPropSheet
} factory_type;
class Factory : public IClassFactory {
public:
Factory() {
refcount = 0;
type = FactoryUnknown;
InterlockedIncrement(&objs_loaded);
}
virtual ~Factory() {
InterlockedDecrement(&objs_loaded);
}
// IUnknown
HRESULT __stdcall QueryInterface(REFIID riid, void **ppObj);
ULONG __stdcall AddRef() {
return InterlockedIncrement(&refcount);
}
ULONG __stdcall Release() {
LONG rc = InterlockedDecrement(&refcount);
if (rc == 0)
delete this;
return rc;
}
// IClassFactory
virtual HRESULT __stdcall CreateInstance(IUnknown* pUnknownOuter, const IID& iid, void** ppv);
virtual HRESULT __stdcall LockServer(BOOL bLock);
factory_type type;
private:
LONG refcount;
};