[lazarus] Patch: window subclassing, paint messages

[Micha Nelissen]

Micha Nelissen wrote:
> Mattias Gaertner wrote:
>> On Fri, 4 Jul 2003 11:36:47 +0200
>> "Micha Nelissen" <mdvpost at hotmail.com> wrote:
>> 
>>> Hi,
>>> 
>>> Attached is a patch to implement proper window subclassing and paint
>>> messages. This will enable _LARGE_ parts of the lcl code with
>>> respect to the interface because we actually get messages like
>>> listbox insertitem etc. Speedbuttons will now also be drawn
>>> correctly, groupboxes are drawn correctly...etc.
>>> 
>>> In wincontrol.inc I have changed the defaulthandler to send a
>>> message. This is still up for debate, and I don't know the effects
>>> on the GTK. Comments are welcome.
>> 
>> I didn't found this behaviour in the VCL. So, I changed them back to
>> calling the DefaultHandler and added a TWinControl.DefaultHandler,
>> that calls the new interface procedure CallDefaultWndHandler. The
>> win32 interface then sends the paint message.
>> Please test it. We can also add an interface method of its own for
>> the paint message, if you like.
> 
> Okay, that's good. I'd vote for handling message in the
> defaulthandler then, too. Patch for that is attached. Also included
> is a 'DoSubClass := true' for the scrolling window. Probably a failed
> hunk. 

Sorry for that broken patch. Please disregard it.

Regards,

Micha.