Example in chapter please :)
Le 24/6/16 à 14:05, Esteban Lorenzano a écrit :
On 24 Jun 2016, at 09:53, Nicolai Hess <[email protected]
<mailto:[email protected]>> wrote:
I’m sorry… I do not understand. This is solved in UFFI since some
months, and Torsten’s OSWindow uses it.
Sorry then it is my fault. I know that Torsten already ported
OSWindow to UFFI, and that most things are already working.
UFFI provides FFIConstantHandle type to deal with windows HANDLE
types, as comment says:
I represent a constant HANDLE, as described in *Windows
MSDN>https://msdn.microsoft.com/en-us/library/windows/desktop/ms724457(v=vs.85).aspx*
<https://msdn.microsoft.com/en-us/library/windows/desktop/ms724457%28v=vs.85%29.aspx*>
A ==HANDLE== is a special kind of external object who is accessed
through numbers, therefore and ==ExternalAddress== is not
appropriate to describe it (since they are constants and external
addresses represents disposable spaces from memory).
Is not clear this is necessary outside Windows, but according to
documentation they are somekind analogous to unix's File
Descriptors (but with some remarkable diferences, as documented
*here>http://lackingrhoticity.blogspot.fr/2015/05/passing-fds-handles-between-processes.html*.
Example:
[[[
HWND := #FFIConstantHandle.
self ffiCall: #(HWND GetActiveWindow())
]]]
is there anything I’m missing?
I don't know what else should I do, I already posted the example.
The code I provided just don't work (DNU on isExternalAddress, see
other mail), and I have no idea how to make it work.
Yes, maybe I don't know enough about ffi for this type of the
function argument passing.
the example is a simplification, you cannot put both definition and
call in same method… find attached a working example of what you want.
(actually I tried to port some NBOpenGL code to UFFI, for this I need
to register a Window Class with WinWndClassEx (to create a gl context).
So if this *is* already working, I need to look what I have done wrong).
thanks for your response.
nicolai
Esteban
