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Re: Help needed to program an array ctrl. [message #28473 is a reply to message #28467]

Thu, 02 September 2010 21:48

dolik.rce
Messages: 1791
Registered: August 2008
Location: Czech Republic

Ultimate Contributor

Yes, I assumed that there is not too much layers, so it will be fast enough to recreate them all every time something changes.

As for your questions:
1) If I wanted to know which Ctrl changed, I would probably use external controls. Then you can assign a Callback1 to each which will pass the row number to the called function. Exactly as you did it in your code Wink

You just have a little bug there - if you delete some row, the following have messed up ids (layer_id!=row index). I would suggest you to add an index to the array (AddIndex("id") Wink

and store layer_id in it. So you can use that instead of the row number.

2) DUMPC is a debugging macro that dumps the content of container into the log file (Debug > View log file in theide). I put it there just to make sure the layers are updated correctly, there is no deeper meaning into that destructor. I also called it once in the constructor.

The most complicated thing about ArrayCtrl is that it supports a lot of different usage patterns. Actually it should be even able to work with external data source, but I never seen that and the help only says that it is awkward Smile

Unfortunately I can't tell you what is the simplest solution to your problem, I simply don't know. Maybe someone else can give you better advice.

Thinking about it now, I found one more solution. You could create your own Ctrl, representing the whole layer (i.e. including all the Ctrls in a single widget). It would be a little bit more work to create it, but might save a lot of work on handling all the thing separately. But that is just my idea, I never did something like that.

Honza

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