LAMW: PosRelativeToAnchor & PosRelativeToParent
lazarus / 43-Android

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Handoko · 2016-07-17 09:43

Hello. Can anybody please tell me where I can find
documentation/information about PosRelativeToAnchor and
PosRelativeToParent.

I tried to set different values and combinations for Anchor,
PosRelativeToAnchor and PosRelativeToParent. And I guess I have hit
the jackpot , now my jButton component is nowhere to be found on the
screen, although I still can select it by using Object Inspector.

Is it a bug or something I don't understand?

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jmpessoa · 2016-07-17 16:33

Hello Handoko

Quote...now my jButton component is nowhere to be found on the screen,
although I still can select it by using Object Inspector.

Is it a bug or something I don't understand? ...

Try a trivial position to retrieve your button:

Code: Pascal  [Select][+][-]window.onload = function(){var x1 =
document.getElementById("main_content_section"); if (x1) { var x =
document.getElementsByClassName("geshi");for (var i = 0; i
 PosRelativeToAnchor = [] PosRelativeToParent = [rpCenterInParent] 
Well, you can get some help from google, ex.:

http://www.tutorialspoint.com/android/android_relative_layout.htm

and, also, by "demos" projects...

[Ok. Trial and error is also a learning [programming] method! good
luck!   ]

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Handoko · 2016-07-18 06:33

Quote from: jmpessoa on July 17, 2016, 06:33:54 pmTry a trivial
position to retrieve your button:

It's okay. I simply opened its backup. It always good to keep backups
of working code.

Thanks for the link.

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tintinux · 2016-07-19 06:35

Hi

I confirm this happens sometimes, the top or left propery is set to a
very high value. Up to now I was not able to reproduce (otherwise I
would have reported the bug)

To correct,  there is a quicker way than restoring the backup.

Select the component in the "components list" of the object inspector,
change left or top values to something lower than width and height of
the parent, whatever are the PosRelative properties, and it should
make the object visible again. 

Best regards