DataFlex compile error: Forward reference not resolved MSG_OLE_VT_UI8

If you use a DataFlex version before DF19.1, then you have to add the following line before including the cComAntView.pkg file:

The reasons for that is because DAW only added that declaration line to their Variants.pkg file in DataFlex 19.1. You can use it before that time as it is an existing Windows variant type. It is only the declaration itself that was missing.