Re: EmbeddedWindowControl/ContainerControl Issue

[Dennis Birch <dennisbirch@gmail.com>]

On Thu, Feb 26, 2009 at 7:54 AM, Joe Strout <joe@inspiringapps.com> wrote:
> This hit home for me just yesterday: I have a window subclass that can do
> all sorts of automatic things with its contents, such as disabling controls
> at appropriate times or telling certain kinds of contents to do certain
> things at the appropriate times.  It does this by iterating over the
> Controls list and using IsA (with class or interface specifiers) as needed
> to cast and notify each one.
>
> But this strategy comes to a screeching halt as soon as any of those items
> are a ContainerControl rather than a simple control.  There is no way for
> the window to discover these things among its contents.  I have to fall back
> on declaring some event, which the user must remember to implement, for
> getting references to that stuff.

Couldn't you add that same logic to a ContainerControl subclass, along
with a single method to invoke it? Then in your loop that looks at all
your window's controls you could do something like:

if Control(i) isa SmartControlContainer Then LoopOverControls

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