[Lazarus] TBufDataset issues

[Michael Van Canneyt]

On Thu, 23 Apr 2020, Werner Pamler via lazarus wrote:

> Playing with TBufDataset I came across some issues:
>
> (1) Creating fields at designtime: In order to create fields at 
> designtime to a new TBufDataset component I add FieldDefs by clicking 
> the '...' next to "FieldDefs" in the Object Inspector and fill in the 
> required data. But there is no way to really *create* the dataset. At 
> runtime I would call BufDataset.CreateDataset - but this is not 
> accessible at designtime. In Delphi's ClientDataset there is an item 
> "Create dataset" in the context menu of the dataset. This seems to be 
> missing here.

I will add one;

>
> OK - I can create the dataset at runtime at least. This leads to the 
> second problem:
>
> (2) Persistent fields: Wanting to create persistent fields at design 
> time I do this: Make sure that the BufDataset is active. Right-click on 
> the component to add the Fields Editor. I see the fields created. But 
> how do I make them persistent? In Delphi I select both fields and click 
> the '+'. Here the field list which opens is empty and the "Create" 
> button is disabled. In other datasets everything is working correctly 
> here, but TBufDataset seems to be incomplete.

> Michael, is this your component? Could you have a look? I can write a 
> bug report, if necessary.

I will have a look.

Michael.