How to integrate Irrlicht in a wxWidgets application

Nice niko!

The Complexity of it all proves that Niko is all-powerful... not really, but I am just to lazy to try.. ;-)

Here is an expansion of the first method, which I am using that works in OpenGL :)

One problem with wxWidgets is it is a bit tricky to integrate. In Win32 the default window proc is not called in the message loop, so if you decide to update the display continuously you'll need a way to send messages to Irrlicht.

Unfortunately not all messages can be sent to irrlicht via the proc postEventFromUser, for example the resize event. One way to get around that is to manually add some methods to force resize in Irrlicht itself.

In order to use wxWidgets, you'll need to override the default message loop like this:

//overload this
int EditorApp::OnRun()
{
SetExitOnFrameDelete(true);

wxMainEventLoop eventLoop(this);
wxEventLoop::SetActive(&eventLoop);

m_mainLoop = &eventLoop;

for ( ; ; ) {

while (!Pending() && ProcessIdle());

while (Pending())
{
if (!Dispatch())
{
mShouldLeave = true;
break;
}
}

if (mShouldLeave)
{
while (Pending())
Dispatch();

m_mainLoop = NULL;
return 0;
}


if (mFrame)
mFrame->RenderFrame();

wxMilliSleep(10); // dont take up 100% of cpu as usual
}

m_mainLoop = NULL;
return 0;
}

Definition of new class:

namespace
{
class wxMainEventLoop : public wxEventLoop
{
public:

wxMainEventLoop(EditorApp *editorApp);
virtual void OnExit();

private:
EditorApp *mEditorApp;
};
}

add this:

namespace
{
wxMainEventLoop::wxMainEventLoop(EditorApp *editorApp) : wxEventLoop()
{
mEditorApp = editorApp;
}

void wxMainEventLoop::OnExit()
{
mEditorApp->SetShouldLeave(true);
}
};

good luck!

hehe,

und ich wundere Mich, warum nix ordentlcihes in Irrlicht gecodet wird.
Wenn die Leute es ncihtmal schaffen, ein Handle zu übergeben.
Vielleicht sind das alles Kinder.

cu

Hello Niko!

I have one quastion.Maybe is a noob quastion,but i don't know how i can load terrain in IrrEdit...

Here is the topic on forum:http://irrlicht.sourceforge.net/phpBB2/viewtopic.php?t=14741

thank you for irrlicht.

Hey Niko,

some time time ago i figured out that you render to multiple windows by passing the handle via endScene (as seen in your first alpha of 1.1 via SVN)...In principle in OpenGL this is possible too, and i implemented this already myself in 1.1. But, and thats the reason why i am posting here, in OGL one has to at least bind the GL render context to the corresponding device handle (HDC). And that has to be done *before* any drawing (e.g. via glxMakeCurrent under win32). I am just saying that this endScene thingy will never work for OGL when you want to render to some secondary output windows...As i understand this, glxMakeCurrent always flushs the render context (HRC).

I understand that your solution is the most compatible way in terms of a stable Irrlicht API. But i suspect a generic solution will need an API change by introducing an extra Method to pass the window handle. Would be still compatible in a way if this method is not used...*

Just to let you know...*

Hey Niko,

Great work on the lightmapper! I'm amazed at how awesome it looks. No more need for Dele D for me :)

I am here to make a feature request: May you please add simple terrain display functionality into irrEdit as soon as possible? This would greatly help out any project using irrlicht that requires outdoor rendering of any type. .

I have started a thread and there seems to be a collective need for terrain in order for projects such as mine to be able to use irrEdit efficiently.
http://irrlicht.sourceforge.net/phpBB2/viewtopic.php?t=15273

Please consider my request (and that of many others).

Thankyou very much,
Krama