[Lazarus] Component palette enhancements

[Michael Van Canneyt]

On Fri, 8 Apr 2022, Marco van de Voort via lazarus wrote:

>
> On 8-4-2022 10:49, Michael Van Canneyt via lazarus wrote:
>> 
>> 
>> But that is exactly what I want to support ?
>> 
>> If I want to implement my own button, descendent of the standard TButton or 
>> not:
>> 
>> Except for the restriction during streaming, I see no reason why I would
>> have to name my own button TMyButton, since the 'my' is implicit in the 
>> fact
>> that it is implemented in unit MyControls.
>
> Have a virtual method in tpersistent that is used for the streaming 
> identifier. Default it returns the classname (and everything remains the same 
> for existing classes), and you can override it to also return the unitname.

You're even farther from home with this solution, because then you depend on
the user: 2 classes can return the same name.

Classname and unit name are a unique identifier, guaranteed to be unique 
(in your project) by the compiler itself.

Michael.