why is the exception in my code ?

hi
i've tryed hard to know where is my problem and i gave up, i used this standard code to run an example, but it gives an exception

the code

#include "Ogre.h"
#include "MyGUI.h"
#include "ExampleFrameListener.h"

using namespace Ogre;
/////////////////////////


void setupResources(void)
{
// Load resource paths from config file
ConfigFile cf;
cf.load("resources.cfg");

// Go through all sections & settings in the file
ConfigFile::SectionIterator seci = cf.getSectionIterator();

String secName, typeName, archName;
while (seci.hasMoreElements())
{
secName = seci.peekNextKey();
ConfigFile::SettingsMultiMap *settings = seci.getNext();
ConfigFile::SettingsMultiMap::iterator i;
for (i = settings->begin(); i != settings->end(); ++i)
{
typeName = i->first;
archName = i->second;
ResourceGroupManager::getSingleton().addResourceLocation(
archName, typeName, secName);
}
}
}

//////////////////////////////////////////////// for GUI
// the listener::
class GuiFrameListener : public ExampleFrameListener, public OIS::KeyListener, public OIS::MouseListener
{
private:
MyGUI::Gui * mGUI;
bool mShutdownRequested;

public:
// NB using buffered input, this is the only change
GuiFrameListener(RenderWindow* mWindow,Camera* cam) : ExampleFrameListener(mWindow,cam),
mShutdownRequested(false)
{

windowResized(mWindow);
MyGUI::Gui * mGUI=new MyGUI::Gui();
mGUI->initialise(mWindow);
MyGUI::ButtonPtr button = mGUI->createWidget<MyGUI::Button>("Button", 10, 10, 300, 26, MyGUI::ALIGN_DEFAULT, "Main");
button->setCaption("exit");
mMouse->setEventCallback(this);
mKeyboard->setEventCallback(this);
}
bool GuiFrameListener::frameStarted(const Ogre::FrameEvent& evt)
{

using namespace OIS;

if(mWindow->isClosed()) return false;

//Need to capture/update each device
mKeyboard->capture();
mMouse->capture();
if( mJoy ) mJoy->capture();

bool buffJ = (mJoy) ? mJoy->buffered() : true;

//Check if one of the devices is not buffered
if( !mMouse->buffered() || !mKeyboard->buffered() || !buffJ )
{
// one of the input modes is immediate, so setup what is needed for immediate movement
if (mTimeUntilNextToggle >= 0)
mTimeUntilNextToggle -= evt.timeSinceLastFrame;

// Move about 100 units per second
mMoveScale = mMoveSpeed * evt.timeSinceLastFrame;
// Take about 10 seconds for full rotation
mRotScale = mRotateSpeed * evt.timeSinceLastFrame;

mRotX = 0;
mRotY = 0;
mTranslateVector = Ogre::Vector3::ZERO;
}

//Check to see which device is not buffered, and handle it
if( !mKeyboard->buffered() )
if( processUnbufferedKeyInput(evt) == false )
return false;
if( !mMouse->buffered() )
if( processUnbufferedMouseInput(evt) == false )
return false;

if( !mMouse->buffered() || !mKeyboard->buffered() || !buffJ )
moveCamera();

mGUI->injectFrameEntered(evt.timeSinceLastFrame);/////////////////////////// here is the problem

return true;
}
bool GuiFrameListener::mouseMoved( const OIS::MouseEvent &arg )
{
mGUI->injectMouseMove(arg);
return true;
}

bool GuiFrameListener::mousePressed( const OIS::MouseEvent &arg, OIS::MouseButtonID id )
{
mGUI->injectMousePress(arg, id);
return true;
}

bool GuiFrameListener::mouseReleased( const OIS::MouseEvent &arg, OIS::MouseButtonID id )
{
mGUI->injectMouseRelease(arg, id);
return true;
}

bool GuiFrameListener::keyPressed( const OIS::KeyEvent &arg )
{
mGUI->injectKeyPress(arg);
return true;
}

bool GuiFrameListener::keyReleased( const OIS::KeyEvent &arg )
{
mGUI->injectKeyRelease(arg);
return true;
}
};

///////////////////////////////////////////////// end of GUI

/////////////////////
#if OGRE_PLATFORM == OGRE_PLATFORM_WIN32
#define WIN32_LEAN_AND_MEAN
#include "windows.h"

#endif


#if OGRE_PLATFORM == OGRE_PLATFORM_WIN32
INT WINAPI WinMain( HINSTANCE hInst, HINSTANCE, LPSTR strCmdLine, INT )
#else
int main(int argc, char *argv[])
#endif
{
// variables
Root *mRoot;
Camera* mCamera;
SceneManager* mSceneMgr;
RenderWindow* mWindow;
Ogre::String mResourcePath;
SceneNode* mFountainNode;
// Create application object
mRoot = new Root("plugins.cfg", "ogre.cfg", "Ogre.log");
setupResources();
mRoot->showConfigDialog();
mWindow = mRoot->initialise(true);
mSceneMgr = mRoot->createSceneManager(ST_GENERIC, "ExampleSMInstance");
// Create the camera
mCamera = mSceneMgr->createCamera("PlayerCam");
// Position it at 500 in Z direction
mCamera->setPosition(Vector3(0,0,500));
// Look back along -Z
mCamera->lookAt(Vector3(0,0,-300));
mCamera->setNearClipDistance(5);
// Create one viewport, entire window
Viewport* vp = mWindow->addViewport(mCamera);
vp->setBackgroundColour(ColourValue(1,1,0));
// Alter the camera aspect ratio to match the viewport

TextureManager::getSingleton().setDefaultNumMipmaps(5);
// Initialise, parse scripts etc
ResourceGroupManager::getSingleton().initialiseAllResourceGroups();
// Set ambient light
//mSceneMgr->setAmbientLight(ColourValue(0.2, 0.2, 0.2));

// Create a skydome
mSceneMgr->setSkyDome(true, "Examples/CloudySky", 5, 8);

// Create a light
Light* l = mSceneMgr->createLight("MainLight");
// Accept default settings: point light, white diffuse, just set position
// NB I could attach the light to a SceneNode if I wanted it to move automatically with
// other objects, but I don't
l->setPosition(20,80,50);

Entity *ent;

// Define a floor plane mesh
Plane p;
p.normal = Vector3::UNIT_Y;
p.d = 200;
MeshManager::getSingleton().createPlane("FloorPlane", ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME, p, 200000, 200000, 20, 20, true, 1, 50, 50, Vector3::UNIT_Z);

// Create an entity (the floor)
ent = mSceneMgr->createEntity("floor", "FloorPlane");
ent->setMaterialName("Examples/RustySteel");
// Attach to child of root node, better for culling (otherwise bounds are the combination of the 2)
mSceneMgr->getRootSceneNode()->createChildSceneNode()->attachObject(ent);
////////////////////////////////////////////////////////
GuiFrameListener* mFrameListener= new GuiFrameListener(mWindow, mCamera);
mFrameListener->showDebugOverlay(false);
mRoot->addFrameListener(mFrameListener);
/////////////////////////////////////////////////////////
mSceneMgr->setFog(FOG_EXP, ColourValue::White, 0.0002);
mRoot->startRendering();
return 0;
}


and it lead me to afile named : list, and pointed to this code inside that file:

iterator begin()
{ // return iterator for beginning of mutable sequence
return (iterator(_Nextnode(_Myhead), this));
}


with an exception error ::
Unhandled exception at 0x0083f884 (MyGUI_d.dll) in test.exe: 0xC0000005: Access violation reading location 0xcdcdce51.

and the output is::

'test.exe': Loaded 'C:\OgreSDK\bin\debug\test.exe', Symbols loaded.
'test.exe': Loaded 'C:\WINDOWS\system32\ntdll.dll', No symbols loaded.
'test.exe': Loaded 'C:\WINDOWS\system32\kernel32.dll', No symbols loaded.
'test.exe': Loaded 'C:\OgreSDK\bin\debug\OgreMain_d.dll', No symbols loaded.
'test.exe': Loaded 'C:\WINDOWS\system32\user32.dll', No symbols loaded.
'test.exe': Loaded 'C:\WINDOWS\system32\gdi32.dll', No symbols loaded.
'test.exe': Loaded 'C:\WINDOWS\WinSxS\x86_Microsoft.VC80.DebugCRT_1fc8b3b9a1e18e3b_8.0.50727.762_x-ww_5490cd9f\msvcp80d.dll', Symbols loaded.
'test.exe': Loaded 'C:\WINDOWS\WinSxS\x86_Microsoft.VC80.DebugCRT_1fc8b3b9a1e18e3b_8.0.50727.762_x-ww_5490cd9f\msvcr80d.dll', Symbols loaded.
'test.exe': Loaded 'C:\WINDOWS\system32\msvcrt.dll', No symbols loaded.
'test.exe': Loaded 'C:\OgreSDK\bin\debug\OIS_d.dll', Binary was not built with debug information.
'test.exe': Loaded 'C:\WINDOWS\system32\dinput8.dll', No symbols loaded.
'test.exe': Loaded 'C:\WINDOWS\system32\advapi32.dll', No symbols loaded.
'test.exe': Loaded 'C:\WINDOWS\system32\rpcrt4.dll', No symbols loaded.
'test.exe': Loaded 'C:\OgreSDK\bin\debug\MyGUI_d.dll', Symbols loaded.
'test.exe': Loaded 'C:\WINDOWS\system32\imm32.dll', No symbols loaded.
'test.exe': Loaded 'C:\WINDOWS\system32\lpk.dll', No symbols loaded.
'test.exe': Loaded 'C:\WINDOWS\system32\usp10.dll', No symbols loaded.
'test.exe': Loaded 'C:\OgreSDK\bin\debug\RenderSystem_Direct3D9_d.dll', No symbols loaded.
'test.exe': Loaded 'C:\WINDOWS\system32\d3d9.dll', No symbols loaded.
'test.exe': Loaded 'C:\WINDOWS\system32\d3d8thk.dll', No symbols loaded.
'test.exe': Loaded 'C:\WINDOWS\system32\version.dll', No symbols loaded.
'test.exe': Loaded 'C:\WINDOWS\system32\winmm.dll', No symbols loaded.
'test.exe': Loaded 'C:\WINDOWS\system32\uxtheme.dll', No symbols loaded.
'test.exe': Loaded 'C:\OgreSDK\bin\debug\RenderSystem_GL_d.dll', No symbols loaded.
'test.exe': Loaded 'C:\WINDOWS\system32\opengl32.dll', No symbols loaded.
'test.exe': Loaded 'C:\WINDOWS\system32\glu32.dll', No symbols loaded.
'test.exe': Loaded 'C:\WINDOWS\system32\ddraw.dll', No symbols loaded.
'test.exe': Loaded 'C:\WINDOWS\system32\dciman32.dll', No symbols loaded.
'test.exe': Loaded 'C:\WINDOWS\system32\MSCTFIME.IME', No symbols loaded.
'test.exe': Loaded 'C:\WINDOWS\system32\ole32.dll', No symbols loaded.
'test.exe': Loaded 'C:\WINDOWS\system32\iglicd32.dll', Binary was not built with debug information.
'test.exe': Loaded 'C:\WINDOWS\system32\igldev32.dll', Binary was not built with debug information.
'test.exe': Loaded 'C:\WINDOWS\system32\mcd32.dll', No symbols loaded.
'test.exe': Unloaded 'C:\WINDOWS\system32\mcd32.dll'
'test.exe': Loaded 'C:\OgreSDK\bin\debug\Plugin_ParticleFX_d.dll', No symbols loaded.
'test.exe': Loaded 'C:\OgreSDK\bin\debug\Plugin_BSPSceneManager_d.dll', No symbols loaded.
'test.exe': Loaded 'C:\OgreSDK\bin\debug\Plugin_OctreeSceneManager_d.dll', No symbols loaded.
'test.exe': Loaded 'C:\OgreSDK\bin\debug\Plugin_CgProgramManager_d.dll', No symbols loaded.
'test.exe': Loaded 'C:\OgreSDK\bin\debug\cg.dll', Binary was not built with debug information.
'test.exe': Loaded 'C:\Program Files\Yahoo!\Messenger\idle.dll', No symbols loaded.
'test.exe': Loaded 'C:\Program Files\Yahoo!\Messenger\msvcr71.dll', No symbols loaded.
First-chance exception at 0x7c812a7b in test.exe: Microsoft C++ exception: Ogre::InvalidParametersException at memory location 0x0012e568..
'test.exe': Loaded 'C:\WINDOWS\system32\hid.dll', No symbols loaded.
'test.exe': Loaded 'C:\WINDOWS\system32\setupapi.dll', No symbols loaded.
'test.exe': Loaded 'C:\WINDOWS\system32\wintrust.dll', No symbols loaded.
'test.exe': Loaded 'C:\WINDOWS\system32\crypt32.dll', No symbols loaded.
'test.exe': Loaded 'C:\WINDOWS\system32\msasn1.dll', No symbols loaded.
'test.exe': Loaded 'C:\WINDOWS\system32\imagehlp.dll', No symbols loaded.
'test.exe': Loaded 'C:\WINDOWS\system32\ntmarta.dll', No symbols loaded.
'test.exe': Loaded 'C:\WINDOWS\system32\wldap32.dll', No symbols loaded.
'test.exe': Loaded 'C:\WINDOWS\system32\samlib.dll', No symbols loaded.
First-chance exception at 0x7c812a7b in test.exe: Microsoft C++ exception: OIS::Exception at memory location 0x0012f568..
First-chance exception at 0x0083f884 (MyGUI_d.dll) in test.exe: 0xC0000005: Access violation reading location 0xcdcdce51.
Unhandled exception at 0x0083f884 (MyGUI_d.dll) in test.exe: 0xC0000005: Access violation reading location 0xcdcdce51.
The program '[5872] test.exe: Native' has exited with code 0 (0x0).


notice if i removed the line::
mGUI->injectFrameEntered(evt.timeSinceLastFrame);
i will have the program running with the mouse hanging in the upper left corner of the screen, but the camera clearly still moving.

am using VC 2005 sp1 , ogre1.4.7 , MyGUI_2.2.0_RC1

now u have my problem.
i know this question needs some effort, but i really hope if there is someone for giving me a hand.

thank u very much for OGRE

How looks your call stack like and did you try stepping through the code where you are suspecting the exception (easy to be found by call stack)?
Looks like you are accessing un-initialized memory.

How looks your call stack like and did you try stepping through the code where you are suspecting the exception (easy to be found by call stack)?
Looks like you are accessing un-initialized memory.

very thanks for ur reply

but i don't think it is the problem coz i make an insatnce of the class
GuiFrameListener which has the problem almost at the end where every thing is initialized, and as i said the problem just accure when i use the instruction mGUI->injectFrameEntered(evt.timeSinceLastFrame);
which is used for updating, so don't u think that the problem is that am missing some thing here but i don't know what it is?
should i build an instance for a class in MyGui or what i did is enough?

Whats stopping you from putting in a break point and stepping through the code line by line?

ok i did that and it throw the exception in the last line "startrendering"
i couldn't have any more extra information, just know it throw it after rendering which i knew already

oh sorry friends i was confused

acually i found that the exception :
First-chance exception at 0x7c812a7b in test.exe: Microsoft C++ exception: Ogre::InvalidParametersException at memory location 0x0012e568..

is thrown after the instruction:

ResourceGroupManager::getSingleton().initialiseAllResourceGroups();

then comes the other at the last:
Unhandled exception at 0x0083f884 (MyGUI_d.dll) in test.exe: 0xC0000005: Access violation reading location 0xcdcdce51.

so here is the problem, now am wondering if that relatet to resourses.cfg
cause i copied the media folder of MyGui to ogre media folder and changed the resources.cfg to be like this:


# Resource locations to be added to the 'boostrap' path
# This also contains the minimum you need to use the Ogre example framework
[Bootstrap]
Zip=../../media/packs/OgreCore.zip

# Resource locations to be added to the default path
[General]
FileSystem=../../media
FileSystem=../../media/fonts
FileSystem=../../media/materials/programs
FileSystem=../../media/materials/scripts
FileSystem=../../media/materials/textures
FileSystem=../../media/models
FileSystem=../../media/overlays
FileSystem=../../media/particle
FileSystem=../../media/gui
FileSystem=../../media/DeferredShadingMedia
Zip=../../media/packs/cubemap.zip
Zip=../../media/packs/cubemapsJS.zip
Zip=../../media/packs/dragon.zip
Zip=../../media/packs/fresneldemo.zip
Zip=../../media/packs/ogretestmap.zip
Zip=../../media/packs/skybox.zip


is there a problem?

i found a new exception thrown when trying to buid a new instance of GuiFrameListener at first step after this line:
GuiFrameListener(RenderWindow* mWindow,Camera* cam) : ExampleFrameListener(mWindow,cam),
mShutdownRequested(false)

and the exception is :

First-chance exception at 0x7c812a7b in test.exe: Microsoft C++ exception: OIS::Exception at memory location 0x0012f568..

so it seems am full of exceptions...