Here is the code snippet. All the viewer stuff is created from within the
dll I am loading and the main thread is forwarding messages to it
osg::ref_ptr<osgDB::DynamicLibrary> dll =
osgDB::DynamicLibrary::loadLibrary("bin/ig/KtIGLibOSG/KtIGLibOSG.dll");
if (dll.get())
{
osgDB::DynamicLibrary::PROC_ADDRESS proc =
dll->getProcAddress("createIGLib");
if (proc)
{
createIGLibFn *fn = (createIGLibFn*)proc;
lib = fn(0,0);
}
}
lib->init();
while (!lib->isDone())
{
#ifdef WIN32
MSG msg;
if (::PeekMessage(&msg,NULL,0,0,PM_NOREMOVE))
{
::GetMessage(&msg, NULL, 0, 0);
lib->postMessage((void*)&msg);
}
#endif
}
void KtIGLibOSG::postMessage(void* msg)
{
if (mViewer.valid())
{
osgViewer::CompositeViewer::Windows wins;
mViewer->getWindows(wins);
#ifdef WIN32
osgViewer::GraphicsHandleWin32 *hdl =
dynamic_cast<osgViewer::GraphicsHandleWin32*>(wins.at(0));
if(hdl)
{
MSG* message = (MSG*)msg;
WNDPROC fWndProc = (WNDPROC)::GetWindowLong(hdl->getHWND(), GWL_WNDPROC);
fWndProc(hdl->getHWND(), message->message, message->wParam,
message->lParam);
}
#endif
}
}
hope it helps
Nick
http://www.linkedin.com/in/tnick
Sent from Izmit, 41, Turkey
On Mon, Jan 4, 2010 at 9:06 AM, J.P. Delport <[email protected]> wrote:
> Hi Nick,
>
>
> Trajce Nikolov wrote:
>
>> Hi J.P.
>>
>> exactly, the same issue. I made it work though with dispatching messages
>> from the main thread to the other from the dll and it works this way.
>>
>
> Could you expand on how you do this. I'd like to forward to our Windows
> developer.
>
> thanks
> jp
>
>
>> Nick
>>
>> http://www.linkedin.com/in/tnick
>> Sent from Izmit, 41, Turkey
>>
>> On Mon, Jan 4, 2010 at 8:48 AM, J.P. Delport <[email protected]<mailto:
>> [email protected]>> wrote:
>>
>> Hi,
>>
>> I've had similar issues. See this thread:
>> http://thread.gmane.org/gmane.comp.graphics.openscenegraph.user/50527
>>
>> jp
>>
>> Trajce Nikolov wrote:
>>
>> Hi Wojtek,
>>
>> the same setup I have here, all in dll. Not working though,
>> windows7. I had to do some hacks with the win32 messaging to
>> make it work
>>
>> Nick
>>
>> http://www.linkedin.com/in/tnick
>> Sent from Devlet, Ankara, Turkey
>>
>> On Mon, Dec 21, 2009 at 11:49 AM, Wojciech Lewandowski
>> <[email protected] <mailto:[email protected]>
>> <mailto:[email protected] <mailto:[email protected]>>>
>>
>> wrote:
>>
>> Hi Guys
>>
>> I doubt your problem is directly related to DLL use. We have
>> a code
>> at the company where allmost all OSG stuff including osgViewer
>> creation is loaded as dynamic DLL plugins. Its built with VS
>> 2008
>> Express. All works correctly and we see no problem with
>> window focus
>> or similar things. I suspect something might get lost in
>> translation
>> to DLL. Mangled args passed to viewer, mixed library models,
>> overrriden HINSTANCE or somethin like this...( these are very
>> fuzzy
>> thoughts, if I was to elaborate I would not be able to tell
>> how they
>> could directly affect DLL window setup).
>>
>> Cheers,
>> Wojtek
>>
>> --------------------------------------------------
>> From: "Robert Osfield" <[email protected]
>> <mailto:[email protected]>
>> <mailto:[email protected]
>> <mailto:[email protected]>>>
>>
>> Sent: Monday, December 21, 2009 10:21 AM
>> To: "OpenSceneGraph Users"
>> <[email protected]
>> <mailto:[email protected]>
>> <mailto:[email protected]
>> <mailto:[email protected]>>>
>>
>> Subject: Re: [osg-users] viewer loaded from dll not
>> responsive to events
>>
>>
>> Hi Nick,
>>
>> I'm no windows programmers, but vaguely recall a
>> restriction on
>> events
>> and the main thread, osgViewer has code built in to cope
>> with this,
>> but don't recall any issues with loading a viewer from a
>> dll.
>>
>> The best platform for handling really flexible window
>> creation
>> is the
>> oldest one we support... X11.... allows you great control
>> over
>> events
>> and is far better than Windows and OSX for this. Alas
>> sometimes
>> technologies go backwards overtime....
>>
>> Robert.
>>
>> On Sun, Dec 20, 2009 at 11:01 PM, Trajce Nikolov
>> <[email protected]
>> <mailto:[email protected]>
>> <mailto:[email protected]
>> <mailto:[email protected]>>> wrote:
>>
>> Hi,
>> I am loading my viewer from a dll and as the topic
>> says, it
>> does not respond
>> to any events. Windows platform. Any ideas?
>> There is a way I think to put message hooks but it is
>> more
>> then a hack then
>> a real solution
>> Thanks
>> Nick
>>
>> http://www.linkedin.com/in/tnick
>>
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>> <mailto:[email protected]>
>> <mailto:[email protected]
>> <mailto:[email protected]>>
>>
>>
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>>
>>
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>>
>>
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>>
>>
>>
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