To subcribe a mouse event

[geru]

Hi!!

I'm trying to subscribe a mouse event on a quit button. For do that, tutorial says that I have to create a button, and subscribe it whith the next function:

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quit->subscribeEvent(CEGUI::PushButton::EventClicked, CEGUI::Event::Subscriber(close(??), this));

Well, to handle the event, I write the close() function out of a cegui class, in order to pass to subscriber function, as a pointer (&function()). And I received this error:

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cegui.cpp:54: error: no matching function for call to ‘close()’
/usr/include/unistd.h:320: note: candidates are: int close(int)
cegui.cpp:23: note:                 bool close(const CEGUI::EventArgs&)
make: *** [cegui.o] Error 1

I don't understand what is CEGUI::EventArgs&, somebody can help me?

Thanks very much

[CrazyEddie]

Hi,

CEGUI::EventArgs is the base of a hierarchy of classes that is used to pass relevant information about an event to the subscribed event handler (btw, I would not rely on that d_hasWindow member you can see there, it's highly likely to be removed in a future release).

The specific subclass that is passed will depend upon the event that is being subscribed to, for PushButton::Clicked, this is a CEGUI::WindowEventArgs - so within the event handler you could cast the passed CEGUI::EventArgs reference to a CEGUI::WindowEventArgs reference, you can then access the 'window' field of this object to find out the specific button that was clicked.

HTH

CE.

[geru]

Hi!

Thanks you very much, now CEGUI detects events well .

But, I have another problem :-S. That is, I create one button with CEGUI, that when I am playing and I press de 'P' key in order to pause the scene and give control events to Cegui, the button displays on screen and it is waiting for the mouse event (click). When I click on it, the control of events is passed to input (i can play again), but the CEGUI button doesn't delete from screen.

When I trying to delete the CEGUI object, I receive segmentation fault. How can I do that?

Here is the code of the constructor:

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Cegui::Cegui(Ogre::SceneManager *manager) {
  Ogre::RenderWindow *window = Ogre::Root::getSingleton().getAutoCreatedWindow();
  renderer = new CEGUI::OgreCEGUIRenderer(window, Ogre::RENDER_QUEUE_OVERLAY, false, 0, manager);
  system = new CEGUI::System(renderer);
  // Default skin
  CEGUI::SchemeManager::getSingleton().loadScheme((CEGUI::utf8*)"TaharezLookSkin.scheme");
  system->setDefaultMouseCursor((CEGUI::utf8*)"TaharezLook", (CEGUI::utf8*)"MouseArrow");
  CEGUI::MouseCursor::getSingleton().setImage(CEGUI::System::getSingleton().getDefaultMouseCursor());
  system->setDefaultFont((CEGUI::utf8*)"BlueHighway-12");
}

Here, to create a button:

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void Cegui::menu(Scene *scene) {
  CEGUI::WindowManager *window = CEGUI::WindowManager::getSingletonPtr();
  //CEGUI::Window *menu = window->loadWindowLayout((CEGUI::utf8*)"ogregui.layout");
  CEGUI::Window *menu = window->createWindow("DefaultGUISheet", "CEGUI/Menu");
  CEGUI::Window *quit = window->createWindow("TaharezLook/Button", "CEGUI/Menu/QuitButton");
  quit->setText("PAUSE");
  quit->setSize(CEGUI::UVector2(CEGUI::UDim(1, 0), CEGUI::UDim(0.10, 0)));
  menu->addChildWindow(quit);
  system->setGUISheet(menu);
  scenePointer = scene;
  input::Input::getInstance()->setListeners(this, this); //Cegui is now listening
  quit->subscribeEvent(CEGUI::PushButton::EventClicked, CEGUI::Event::Subscriber(&Cegui::close, this));
}

And here, destructor:

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Cegui::~Cegui(void) {
  delete renderer;
  delete system;
}

Thanks again .

[CrazyEddie]

Hi,

I'm not sure I'd want to be initialising and tearing down the whole CEGUI system every time someone pauses. You'll probably be better off just setting up and cleaning up CEGUI up once, and then create / delete just the button (or even have it pre-created and just show/hide it). If you're not actually setting it up every time, forgive me, it just looked that way

With regards to the seg, it's probably because you're deleting the CEGUI::System and your renderer object out of sequence. You have to delete the CEGUI::System first, then the renderer (because part of the cleanup accesses the renderer object - in your case, you already deleted it).

CE.

[geru]

Thanks you very much again.

I am going to delete the created buttons.

A greeting,

Geru.