[Lazarus] Patch for simple docking.

[Michael Van Canneyt]

On Mon, 5 Apr 2010, Mattias Gaertner wrote:

> On Sun, 4 Apr 2010 20:04:38 +0200 (CEST)
> Michael Van Canneyt <michael at freepascal.org> wrote:
>
>>
>>
>> On Sun, 4 Apr 2010, Michael Van Canneyt wrote:
>>
>>> Great, thank you.
>>>
>>> Maybe you can also have a look at the following bug:
>>> - Create main form as above.
>>> - Additionally Set docksite=true for the main form.
>>> Run program.
>>> - Drop panel outside main form. DockForm appears, panel is on it :-)
>>> - Now drop the panel back on the main form.
>>>
>>> -> The panel disappears.
>>>
>>> All properties I thought of check out OK: visible, parent (it is main form),
>>> it's size.
>>> (size of the form).
>>>
>>> The same problem happens when you manually dock the panel back on the main
>>> form:
>>> I do this with the following code in a button on the main form:
>>>
>>>  Panel1.ManualDock(Self,Self,alTop,true);
>>>
>>> I tried debugging it, but the error escapes me. All seems to be working as it
>>> should,
>>> except that the control is not drawn on it's new location :/
>>>
>>> It's not a panel problem, I tried with some other controls as well.
>>> (tested on GTK2, latest Lazarus and FPC)
>>
>> Follow-up, after tip from Hans-Peter Diettrich:
>>
>> When building the LCL with -dOldAutoSize, the panel is shown.
>
> This has been fixed.

Great, thank you very much.

Michael.