// constructs a ByRef variant to pass contents of another variant ByRef.
public void SetAsByrefVariantIndirect(ref Variant value)
{
Debug.Assert(IsEmpty); // The setter can only be called once as VariantClear might be needed otherwise
Debug.Assert((value.VariantType & VarEnum.VT_BYREF) == 0, "double indirection");
switch (value.VariantType)
{
case VarEnum.VT_EMPTY:
case VarEnum.VT_NULL:
// these cannot combine with VT_BYREF. Should try passing as a variant reference
SetAsByrefVariant(ref value);
return;
case VarEnum.VT_RECORD:
// VT_RECORD's are weird in that regardless of is the VT_BYREF flag is set or not
// they have the same internal representation.
_typeUnion._unionTypes._record = value._typeUnion._unionTypes._record;
break;
case VarEnum.VT_DECIMAL:
_typeUnion._unionTypes._byref = UnsafeMethods.ConvertDecimalByrefToPtr(ref value._decimal);
break;
default:
_typeUnion._unionTypes._byref = UnsafeMethods.ConvertIntPtrByrefToPtr(ref value._typeUnion._unionTypes._byref);
break;
}
VariantType = (value.VariantType | VarEnum.VT_BYREF);
}
public void SetAsByrefDecimal(ref Decimal value)
{
Debug.Assert(IsEmpty); // The setter can only be called once as VariantClear might be needed otherwise
VariantType = (VarEnum.VT_DECIMAL | VarEnum.VT_BYREF);
_typeUnion._unionTypes._byref = UnsafeMethods.ConvertDecimalByrefToPtr(ref value);
}