[Lazarus] [lazarus] Patch for processing WM_COPYDATA in Win32 / BugID 9210

[Giuliano Colla]

Paul Ishenin ha scritto:
> Marc Weustink wrote:
>   
>> Felipe Monteiro de Carvalho wrote:
>>   
>>     
>>> I think we should apply the WM_COPYDATA patch.
>>>     
>>>       
>> I don't agree on that.
>>
>> The messages received by the LCL are for VCL compatebility only. That 
>> they happen to have the same values as the messages the win32 widgetset 
>> uses is just a "coincidence"
>> Like we won't pass all events/signals/messages available for 
>> carbon/gtk/qt, we won't pass all for win32.
>> For the simple reason that messages are not cross platform.
>>
>> I agree that we should think of a way that users can simply hook into 
>> the main message/event/signal loop it they want to write an app specific 
>> for one widgetset.
>> Adding all these messages/evets/signals to the LCL is not the way to do 
>> this
>>     
> Maybe Win32Widgetset.AllowMessage('WM_COPYDATA') ?
>
>   
or
{$ifdef PASS_WM_COPYDATA}
..Patch
{$Endif}

Then those who really need it (because of zillions of source code lines 
already written) will compile LCL with -dPASS_WM_COPYDATA.
The others will never notice.

Giuliano