Hi Konstantin,
To answer your first question, frame returns a Frame (), which,
under the hood is an Object - that's another way of saying that
I think your code is at least correctly typed.
I think you would need to use wxDirect to integrate properly with
wxHaskell. It's a bit tedious, but not especially hard. I'll
probably write a blog posting about this soon, but the basics of
what you need to do are as follows:
Create an Eiffel(!) file containing all of the constant
definitions exported by wxWebConnect (or at least the ones you
want...). The reason for the Eiffel is historical: wxHaskell was
originally built on top of a (long-obsolete) binding of wxWidgets
to Eiffel. This requires no real knowledge of Eiffel: it's simply
a file containing lines such as:
wxMY_CONTROL_SOME_VALUE : INTEGER is 23
Create a C header file describing the API you want to wrap - this
is somewhat stylized, using macros to describe inheritance.
Run wxDirect over the newly created files - this autogenerates C
wrappers over the C++ classes/functions with appropriate Haskell
to use them.
I realize that this is a bit 'handwaving', but a full description
really requires quite a lot more than I can manage in a single
e-mail.
As a little more help, if you download wxCore source code (cabal
fetch wxcore), you can look at the following files for
inspiration:
wxcore/src/include/wxc_glue.h and wxc.h - these show the
'wrapping' style needed.
wxcore/src/eiffel/stc.e - this shows how to define constants in
the Eiffel format
WxDirect accepts the following options:
-d : create constant definitions from .e files
-c : create class definitions from .h files
-t : create class type definitions from .h files
-i : create class info definitions
-o : set the output directory
I suspect that you will have a bit of trouble with getting all of
this to work, so if you can wait (it may be a couple of weeks),
there may be a blog posting to help you.
Regards
Jeremy
On Mon, 05 Apr 2010 18:47 +0400, "Konstantin Chugalinskiy"
<kchugalins...@gmail.com> wrote:
Hello, wxHaskell community!
I need to embed web control into my application under Windows 7.
I am trying to use wxWebconnect
( [1]http://www.kirix.com/labs/wxwebconnect/documentation/getting
-started.html ) library with Gecko engine for this.
Haskell code:
foreign import stdcall unsafe "_browserFrame"
c_browserFrame :: Ptr a -> IO(Ptr ())
main :: IO ()
main
= start gui
gui :: IO ()
gui = do
f <- frame [text := "Hello world!", size := (sz 600 600) ]
withObjectPtr f c_browserFrame
return ()
where browser frame looks like
C++ code:
void* __stdcall browserFrame (wxFrame* ptrWxWindow)
{
wxString xulrunner_path = FindXulRunner(wxT("xr"));
wxString dir(wxT("\\plugins"));
wxWebControl::InitEngine(xulrunner_path);
wxWebControl::AddPluginPath(dir);
wxWebControl* ptrBrowser = new wxWebControl(ptrWxWindow,
wxID_WEB, wxPoint(0,0), wxSize(600,600)); //Here error comes from
return ptrWxWindow;
}
it is compiled as dll by MS Visual 2008 and linked to Haskell
program.
Also it looks like CreateControl execution fails.
It should be mentioned that ptrWxWindow can be operated with no
errors (I mean hiding, resizing etc) and no any other kind of
control can be created (wxButton, wxLabel).
If first parameter to c_browserFrame (parent window) is
objectNull then everything is ok with no changes to gui. I can't
understand what is wrong with ptrWxWindow param when passed from
Haskell.
typeid(ptrWxWindow).name() shows expected type of ptrWxWindow -
wxFrame.
What am I doing wrong? Please help me. Or maybe can you help me
using your wxdirect subsystem to add this control to wxHaskell?
with best regards,
Chugalinskiy Konstantin
[2]kchugalins...@gmail.com
Jabber: [3]koschugalins...@jabber.ru
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References
1. http://www.kirix.com/labs/wxwebconnect/documentation/getting-started.html
2. mailto:kchugalins...@gmail.com
3. mailto:koschugalins...@jabber.ru
--
Jeremy O'Donoghue
jeremy.odonog...@gmail.com
------------------------------------------------------------------------------
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Try the new software tools for yourself. Speed compiling, find bugs
proactively, and fine-tune applications for parallel performance.
See why Intel Parallel Studio got high marks during beta.
http://p.sf.net/sfu/intel-sw-dev
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