gecko/xpcom/base/nsWindowsHelpers.h

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2012-05-21 04:12:37 -07:00
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef nsWindowsHelpers_h
#define nsWindowsHelpers_h
#include <windows.h>
#include "nsAutoRef.h"
#include "nscore.h"
template<>
class nsAutoRefTraits<HKEY>
{
public:
typedef HKEY RawRef;
static HKEY Void()
{
return NULL;
}
static void Release(RawRef aFD)
{
if (aFD != Void()) {
RegCloseKey(aFD);
}
}
};
template<>
class nsAutoRefTraits<SC_HANDLE>
{
public:
typedef SC_HANDLE RawRef;
static SC_HANDLE Void()
{
return NULL;
}
static void Release(RawRef aFD)
{
if (aFD != Void()) {
CloseServiceHandle(aFD);
}
}
};
template<>
class nsSimpleRef<HANDLE>
{
protected:
typedef HANDLE RawRef;
nsSimpleRef() : mRawRef(NULL)
{
}
nsSimpleRef(RawRef aRawRef) : mRawRef(aRawRef)
{
}
bool HaveResource() const
{
return mRawRef != NULL && mRawRef != INVALID_HANDLE_VALUE;
}
public:
RawRef get() const
{
return mRawRef;
}
static void Release(RawRef aRawRef)
{
if (aRawRef != NULL && aRawRef != INVALID_HANDLE_VALUE) {
CloseHandle(aRawRef);
}
}
RawRef mRawRef;
};
typedef nsAutoRef<HKEY> nsAutoRegKey;
typedef nsAutoRef<SC_HANDLE> nsAutoServiceHandle;
typedef nsAutoRef<HANDLE> nsAutoHandle;
namespace
{
bool
IsVistaOrLater()
{
OSVERSIONINFO info;
ZeroMemory(&info, sizeof(OSVERSIONINFO));
info.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
GetVersionEx(&info);
return info.dwMajorVersion >= 6;
}
}
#endif