[wxhaskell-users] Fwd: embedding web control

[Konstantin C. <kch...@gm...>]

Hi, Jeremy!

Thank you for reply and help. I will wait as long as it is needed.

2010/4/7 Jeremy O'Donoghue <jer...@gm...>

  Hi Konstantin,
>
> I have started looking at using wxDirect to wrap other wxWidgets
> components. Bottom line is that you can't really do it with the version we
> have available today. I'm working on the changes needed (they are not
> extensive), but since I will be on vacation starting tomorrow, please don't
> expect any reply for at least 2-3 weeks.
>
> Regards
> Jeremy
>
> On Wed, 07 Apr 2010 10:47 +0100, "Jeremy O'Donoghue" <
> jer...@gm...> wrote:
>
>   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" <
> kch...@gm...> wrote:
>
> Hello, wxHaskell community!
>
> I need to embed web control into my application under Windows 7. I am
> trying to use wxWebconnect (
> 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
> kch...@gm...
> Jabber: kos...@ja...
>
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> _______________________________________________
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>
>   --
>   Jeremy O'Donoghue
>   jer...@gm...
>
> ------------------------------------------------------------------------------
> Download Intel® Parallel Studio Eval
> 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
>
> _______________________________________________
> wxhaskell-users mailing lis...@li...https://lists.sourceforge.net/lists/listinfo/wxhaskell-users
>
>  --
>   Jeremy O'Donoghue
>   jer...@gm...
>
>


-- 
with best regards,
Chugalinskiy Konstantin
kch...@gm...
ICQ: 571803742
Jabber: kos...@ja...



-- 
with best regards,
Chugalinskiy Konstantin
+380 66 2694651
+7   906 0850998
kch...@gm...
ICQ: 571803742
Jabber: kos...@ja...