When in the front panel, most LabVIEW data types that wrap other data (such as arrays, DVRs, maps, sets, user events, etc.) allow you to directly view and modify the wrapped data. For some of these data types it is not the default behavior, but it is available if to right-click on the control and select "Show Control...".
For illustrative purposes:
In all but one of the cases above, I can see that the underlying data type is a boolean, and I can swap this out easily for any other data of my choosing, such as a typedef.
The one exception: event registration refnums. There is no "Show Control" option, and from the front panel it is impossible to update this underlying data type. Instead, you have to create a new event registration refnum in the block diagram. I do find that this makes it difficult to work with, maintain, and debug event registration refnums when maintained in class data.
The request: treat event registration refnums like any other data container type, and expose a "Show Control" option that makes the underlying data type accessible in front panels.
