[Lazarus] Generalized DragDrop

[waldo kitty]

On 1/22/2011 20:16, Hans-Peter Diettrich wrote:
> Graeme Geldenhuys schrieb:
[...]
>> I not sure if I understand the original statement, but in fpGUI I use
>> the mime types to register the data that must be transfered via DND.
>> Under Windows, I also register common mime-types that have easy
>> mappings to Windows weird CF_xxx types. So if you register
>> 'text/plain' data in fpGUI, then under Windows, it will also register
>> CF_TEXT for example.
>
> Clipboard formats (CF_...) may be usable on all platforms with a
> comparable/compatible clipboard functionality. But what about all the other
> platforms?

i'm late to the party (again) but reading this, i had these questions...

1. what GUI environments are there that do not have clipboards?

2. are there any that do /not/ use the clipboard for DnD operations?

3. is #2 is yes, what do they use and how?