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

[Mattias Gaertner]

On Mon, 18 Feb 2008 19:13:00 +0100
"Christian U." <z0m3ie at gmx.net> wrote:

> Mattias Gärtner schrieb:
> > Zitat von Felipe Monteiro de Carvalho
> > <felipemonteiro.carvalho at gmail.com>:
> >
> >   
> >> On Feb 18, 2008 12:19 PM, Mattias Gärtner
> >> <nc-gaertnma at netcologne.de> wrote: 
> >>> Where is this documented?
> >>>       
> >> On MSDN. Unless you are implying this should also be on the wiki,
> >> which is only true if it's really decided that WM_COPYDATA
> >> shouldn't be sent to the application, and the discussion doesn't
> >> seam to be over.
> >>     
> >
> > As far as I am concerned the discussion is over: There is
> > SetWindowLong to setup win32/64 specials messages. Where is this
> > trick documented? I would expect it either under tipps/tricks
> > and/or the win32 interface page. 
> Seems taht the core developers work against the users here.
> WM_COPYDATA is an thing that is used very often in Windows.
> For my opinion the best way is to pass this message also to the lcl.
> The overhad is minimal and only on windows there and the compatibiliy
> we win with this is big.
> 
> Who from you (The core developer) works realy on windows ? And who on 
> "real world" Applications ?

If you implement WM_COPYDATA on qt and/or gtk to prove that it can be
implemented platform independently, then it can be added to the LCL.
Otherwise it is a win32 special and should be kept there (i.e. the
win32 intf).


Mattias