Have you tried modifying the list's feel/redraw ?
It starts off as none so you should be able to
put your own code in there no problem.
eg. try this:
view layout [
list 300x300 [button] data [["hello"]["there"]] feel [
redraw: func [face act pos][print "redraw"]
]
]
Anton.
> Hi, I have the following problem: I'm using a list style to
> display some data.
> For the list style you supply a layout block that gets called
> once the block
> containing the list style gets layouted:
>
> mygui: layout [ lst: list 200x200 lstlayout supply lstsupply]
>
> Than for each row in the list that can be displayed lstsupply is
> called for all
> columns.
>
> In my situation I need to execute a block of code once before the
> list get's
> updated and once the list updated ended. The pattern should be like this:
>
> - lstlayout once when calling layout
> - lstconstructor once the list drawing starts
> - lstsupply gets called (row * columns) times
> - lstdestructor once the list drawing ended
>
> Something like this:
>
> mygui: layout [ lst: list 200x200 lstlayout start lstconstructor supply
> lstsupply end lstdestructor]
>
> Is this possible? Robert
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