Re: [BLACKBOX] How to 'embed'

From: Campbell, Robert (SELEX GALILEO, UK) <robert.d.campbell{([at]})nowhere.xy>
Date: Fri, 7 Oct 2011 09:23:13 +0100

Robert,
Very nice, thank you.

A couple of comments.

The xPos and yPos should be associated with the contained view and not
the containing (host) view. I would wrap the contained view such that
it had l, t, r, b coordinates.

 
Obviously you should do what is right for you. But I understand that there is an established
 convention for sub-view size. It requests (using Properties.SizePref ), the host decides (usually but
 not always by agreeing), and the Context is used to inform the sub-view of the host's decision.
 
It seemed natural and convenient to put the position with the size. Note that the sub-view 'carries' the context, so it already
'has' both the size & position information as sub-fields.
 
I have just checked; that is what FormModels does.

I like your test for NIL of Views.ThisFrame. I had tried simply always
doing Views.InstallFrame which works since the documentation just
ignores an already installed frame (but it seems to me to be overkill).

I did something close to what you have and was indeed able to display
a single (in my case) toggle button.

But the button was inactive. It did not respond to mouse clicks.

So it appears I need to also implement a HandleCtrlMsg.

General Embedding
I now need to extract exactly what your code is doing in a general
manner so one can say "These are the minimal requirements
for embedding a subview within a view" such that all subviews
receive all of the messages that the view receives. That is,
I want a passive view with active subviews.

-Doug
 

I want to do something very similar, which is why I have spent time on this. But it is not that near the top of my 'ToDo' list.
Please post your results when you crack making the sub-views active.
 
Cheers
 
Robert
 
 



 

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Received on Fri Oct 07 2011 - 10:23:13 UTC