list style

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

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.

> -----Original Message----- > From: [rebol-bounce--rebol--com] [mailto:[rebol-bounce--rebol--com]]On Behalf Of > Subject: [REBOL] Re: list style > Have you tried modifying the list's feel/redraw ?

> Hi, I expect that it has something to do with 'feel but I never used it.

> there any more information available about the 'feel stuff? Robert

Yes, look here, essential reading: http://www.rebol.com/how-to/feel.html Anton.

> -----Original Message----- > From: [rebol-bounce--rebol--com] [mailto:[rebol-bounce--rebol--com]]On Behalf Of > Subject: [REBOL] Re: list style > http://www.rebol.com/how-to.html