private static TUserData GetUserData <TUserData> (GetMultiDelegateDelegate multi)
{
var userDataDelegate = (UserDataDelegate)multi.Invoke(typeof(UserDataDelegate));
var value = userDataDelegate.Invoke();
return(value is WeakReference weak ? (TUserData)weak.Target : (TUserData)value);
}
public static IntPtr CreateMulti <T1, T2, T3> (T1 wrappedDelegate1, T2 wrappedDelegate2, T3 wrappedDelegate3)
where T1 : Delegate
where T2 : Delegate
where T3 : Delegate
{
var del = new GetMultiDelegateDelegate((type) => {
if (type == typeof(T1))
{
return(wrappedDelegate1);
}
if (type == typeof(T2))
{
return(wrappedDelegate2);
}
if (type == typeof(T3))
{
return(wrappedDelegate3);
}
throw new ArgumentOutOfRangeException(nameof(type));
});
Create(del, out _, out var ctx);
return(ctx);
}
public static IntPtr CreateMultiUserData <T1, T2, T3> (T1 wrappedDelegate1, T2 wrappedDelegate2, T3 wrappedDelegate3, object userData, bool makeWeak = false)
where T1 : Delegate
where T2 : Delegate
where T3 : Delegate
{
userData = makeWeak ? new WeakReference(userData) : userData;
var userDataDelegate = new UserDataDelegate(() => userData);
var del = new GetMultiDelegateDelegate((type) => {
if (type == typeof(T1))
{
return(wrappedDelegate1);
}
if (type == typeof(T2))
{
return(wrappedDelegate2);
}
if (type == typeof(T3))
{
return(wrappedDelegate3);
}
if (type == typeof(UserDataDelegate))
{
return(userDataDelegate);
}
throw new ArgumentOutOfRangeException(nameof(type));
});
Create(del, out _, out var ctx);
return(ctx);
}
public static IntPtr CreateMulti <T> (T wrappedDelegate, ReleaseDelegate destroy)
where T : Delegate
{
var del = new GetMultiDelegateDelegate((type) => {
if (type == typeof(T))
{
return(wrappedDelegate);
}
if (type == typeof(ReleaseDelegate))
{
return(destroy);
}
throw new ArgumentOutOfRangeException(nameof(type));
});
Create(del, out _, out var ctx);
return(ctx);
}
public static IntPtr CreateMulti <T> (T wrappedDelegate, object context, ReleaseDelegate destroy)
where T : Delegate
{
var destroyDelegate = destroy != null && context != null
? new ReleaseDelegate((_) => destroy(context))
: destroy;
var del = new GetMultiDelegateDelegate((type) => {
if (type == typeof(T))
{
return(wrappedDelegate);
}
if (type == typeof(ReleaseDelegate))
{
return(destroyDelegate);
}
throw new ArgumentOutOfRangeException(nameof(type));
});
Create(del, out _, out var ctx);
return(ctx);
}
