saferelease.h

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#pragma once
 
template <class Type> void SafeRelease(Type** pointer)
{
    if (*pointer)
    {
        (*pointer)->Release();
        *pointer = NULL;
    }
}
 
template <typename Type> Type* SafeAcquire(Type* newObject)
{
    if (newObject != NULL)
    {
        newObject->AddRef();
    }
 
    return newObject;
}
 
template <typename Type> void SafeSet(Type** currentObject, Type* newObject)
{
    SafeAcquire(newObject);
    SafeRelease(&currentObject);
    currentObject = newObject;
}