/// <summary>
/// Return the unmanaged C++ pointer from a <see cref="ICallbackable"/> instance.
/// </summary>
/// <typeparam name="TCallback">The type of the callback.</typeparam>
/// <param name="callback">The callback.</param>
/// <returns>A pointer to the unmanaged C++ object of the callback</returns>
public static IntPtr ToCallbackPtr <TCallback>(ICallbackable callback)
where TCallback : ICallbackable
{
// If callback is null, then return a null pointer
if (callback == null)
{
return(IntPtr.Zero);
}
// If callback is CppObject
if (callback is CppObject)
{
return(((CppObject)callback).NativePointer);
}
// Setup the shadow container in order to support multiple inheritance
var shadowContainer = callback.Shadow as ShadowContainer;
if (shadowContainer == null)
{
shadowContainer = new ShadowContainer();
shadowContainer.Initialize(callback);
}
return(shadowContainer.Find(typeof(TCallback)));
}
public static IntPtr ToIntPtr <TCallback>(ICallbackable callback) where TCallback : ICallbackable
{
if (callback == null)
{
return(IntPtr.Zero);
}
if (callback is CppObject)
{
return(((CppObject)callback).NativePointer);
}
ShadowContainer shadowContainer = callback.Shadow as ShadowContainer;
if (shadowContainer == null)
{
shadowContainer = new ShadowContainer();
shadowContainer.Initialize(callback);
}
return(shadowContainer.Find(typeof(TCallback)));
}