Group resizing.

[Alex Tweedly]

Thanks, but no, I can't do that. lock messages will prevent the 
"resizeControl" being fired for any sub-groups whose co-ordinates get 
changed, so it would prevent proper layout for them. 'lock messages' is 
good if you have all your controls directly re-positioned within your 
resize handler - but disallows hierarchy (which is the feature I'm 
trying to take advantage of here).

lock screen is of course a good optimization - thanks.

Alex.

On 03/05/2020 15:26, hakan at exformedia.se wrote:
> You probably need to lock messages in the beginning of your 
> resizeControl. Otherwise the group will adapt to your resizing of your 
> controls. I usually begin with both lock messages and lock screen, but 
> the last is more for optimization.
>
> Håkan
> On 3 May 2020, 16:22 +0200, Alex Tweedly via use-livecode 
> <use-livecode at lists.runrev.com>, wrote:
>> I realized after the discussion last week about resizing that I was
>> missing the benefits of "resizeControl" being sent to each group, so I
>> changed one of my resize handlers to make use of groups (adding a few
>> groups along the way).
>>
>> And it all went wrong :-(
>>
>> Eventually I traced it down to the following ... and don't know if I'm
>> missing something or if I've bumped into a bug.
>>
>> The resize handler is
>>
>>> on resizeControl
>>>    set the width of field "list titles" of me to the width of me - 20
>>>    put "B" && the rect of me && the bottom of me &CR after msg
>>>    set the left of field "list titles" of me to 10
>>>    put "C" && the rect of me && the bottom of me &CR after msg
>>>    local tR
>>>    put 10, the top of me, the right of me -10, the bottom of me-10 
>>> into tR
>>>    set the rect of fld "List" of me to tR
>>> end resizeControl
>>
>> Note the two "put ... msg" statements. - for no reason I can figure out,
>> the "bottom of me" changes between these two statements. Here's the
>> output from the message box:
>>
>>> B 5,32,331,468 468
>>> C 6,32,325,2618 2618
>>> B 5,32,331,471 471
>>> C 5,32,320,2622 2622
>>> B 5,32,331,473 473
>>> C 5,32,320,2626 2626
>>>
>> If I comment out that "set the left of ..." statement, all apparently
>> works as expected.
>>
>> Why should setting the 'left' of a control change the bottom of its
>> enclosing group ?
>>
>> And why change it to an apparently silly value ?
>>
>> -- Alex.
>>
>>
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