subscribing events using IrrlichtRender

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warwick1591
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Joined: Tue Aug 26, 2008 09:48

subscribing events using IrrlichtRender

Postby warwick1591 » Tue Aug 26, 2008 18:14

Hi,

Im using VS9.0 sp1 with CEGUI 0.6.1 and everything compiles and runs fine untill i try to subscribing an event.
I downloaded and am using the precompiled package for vs9.0 of CEGUI.

My code is

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PushButton* btn->subscribeEvent(CEGUI::PushButton::EventClicked,
      CEGUI::Event::Subscriber(&GUIManager::handleBtn, this));

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bool GUIManager::handleBtn(const CEGUI::EventArgs &e)
{
   // Do something
   return true;
}


The button animates when i click on it and everything but just cant subscribe an event without it getting this error

Unhandled exception at 0x006ecd84 in GUI.exe: 0xC0000005: Access violation reading location 0x00000004.

Any help would be much appreciated!

daves
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Re: subscribing events using IrrlichtRender

Postby daves » Tue Aug 26, 2008 23:12

warwick1591 wrote:Hi,


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PushButton* btn->subscribeEvent(CEGUI::PushButton::EventClicked,
      CEGUI::Event::Subscriber(&GUIManager::handleBtn, this));

!


This code looks a bit funny. How are you setting btn? Does the exception occur within your handler or at the time that you subscribe?

warwick1591
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Postby warwick1591 » Wed Aug 27, 2008 02:34

It must be that line because as soon as it wants to run that line it crashes. It doesnt even get to my handler.
This is my layout of the gui

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Window* root = WindowManager::getSingleton().createWindow("DefaultWindow", "root");
   System::getSingleton().setGUISheet(root);

FrameWindow* frameWindow = (FrameWindow*)WindowManager::getSingleton().createWindow("TaharezLook/FrameWindow", "testFrame");
   root->addChildWindow(frameWindow);

   frameWindow->setPosition(UVector2(UDim(0.25f, 0), UDim(0.25f, 0)));
   frameWindow->setSize(UVector2(UDim(0.5f, 0), UDim(0.5f, 0)));
   frameWindow->setText("Frame Window");

PushButton* btn = (PushButton*)WindowManager::getSingleton().createWindow("TaharezLook/Button", "testButton");
   root->addChildWindow(btn);

   btn->setPosition(UVector2(UDim(0.25f, 0), UDim(0.25f, 0)));
   btn->setSize(UVector2(UDim(0.1f, 0.1f), UDim(0.1f, 0.1f)));
   btn->setText("Button");


I also tried to add an event to the button rather than subscribing one with

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btn->addEvent(CEGUI::PushButton::EventClicked);

And i get the same thing so im thinking it has something to do with the "CEGUI::PushButton::EventClicked" part.

Thanks for your reply by the way.

daves
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Postby daves » Wed Aug 27, 2008 12:26

You should not have to add an event.

Unless I'm missing something your code looks OK.

I'm trying to understand if there is a chance that there is a mismatch between compile-time and run-time cegui libraries. What rendering system are you using? Rendering systems such as Ogre come with pre-compiled cegui binaries and if you aren't careful then you can create such a "mismatch".

Suggestion: step into your code and see if it is at the point of subscription (that very line) when the crash occurs... let us know.

another suggestion: this should not matter, but i'd like to see if it changes the nature of the crash.. make the btn a child of the framewindow instead of the root gui sheet, and tell us what happens

Lastly: Try to cast your gui sheet to a defaultwindow (instead of just a window)

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Window* root = WindowManager::getSingleton().createWindow("DefaultWindow", "root");
   System::getSingleton().setGUISheet(root);

becomes

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DefauiltWindow* root = ...


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