Crash on device creation

[Lollerball]

My project compiles OK, no errors or warnings. But when I run the program, it crashes on this line:

Code: Select all

device = createDevice ( video::EDT_OPENGL,
        core::dimension2d<s32>( 1024, 768 ), 16, false, false, this );

What could be wrong? I'm using Dev-C++ 4.9.8.0.

[Overkills]

Code: Select all

 device = createDevice ( video::EDT_OPENGL,
        core::dimension2d<s32>( 1024, 768 ), 16, false, false, this );

First use an other renderer system like Direct3D8 or 9.
Or try to put the receiver to 0, if program run, create a receiver and put his reference !

[bal]

Yeah. If you use this then you need a "bool CYourClass::OnEvent" or it'll crash .

[Lollerball]

Thanks for the replies.

First of all, I'm using Dev-C++, and the Irrlicht library for Dev-C++ doesn't run with D3D. Second, the class that contains this command is inherited from IEventReceiver, and it overrides the OnEvent function, so 'this' should be ok.

Anything else you could think of?

[Tyn]

There's nothing wrong with that I can see, try posting the rest of your code and the error may be easier to spot.

[Lollerball]

Okay, I did some experiments by changing the line. Here's the whole CMenu:run function

Code: Select all

bool CMenu::run ( )
{
    printf ( "Attempting to create a device...\n");
 	device = createDevice ( video::EDT_OPENGL,
        core::dimension2d<s32>( 1024, 768 ), 16, false, true, 0 );    
    
    printf ( "Device created [SUCCESS]\n" );
    
    video::IVideoDriver* driver = device->getVideoDriver();
    scene::ISceneManager* smgr = device->getSceneManager();
    gui::IGUIEnvironment* env = device->getGUIEnvironment();
    
    env->addButton ( core::rect<s32> ( 10,210, 100, 240 ), 0, 102, L"New Game" );
    env->addButton ( core::rect<s32> (10, 250, 100, 290 ), 0, 103, L"Load Game" );
    env->addButton ( core::rect<s32> (10, 300, 100, 340 ), 0, 101, L"Quit" );
    
    printf ( "Entering menu loop...\n" );
    
    while ( device->run() && driver )
    {
        if ( device->isWindowActive() )
        {
                driver->beginScene( true, true, video::SColor( 0, 122, 65, 171 ) );
                env->drawAll();
                driver->endScene();                
        }
    }   
    device->drop();
    return 0;
    
}

As you can see, I tried changing the line we're talking about. The code I originally posted outputted only:
Attempting to create device...

But this code outputs the following:
Attempting to create device...
Irrlicht Engine version 0.6
Microsoft Windows XP Professional Service Pack 1 (Build 2600)

Another change required to get more output is to turn stencilbuffer on. It seems there is something wrong with my event handler. Here's CMenu::OnEvent

Code: Select all

bool CMenu::OnEvent ( SEvent event )
{
    cnt = 0;
    if ( event.EventType == EET_GUI_EVENT )
    {
        s32 id = event.GUIEvent.Caller->getID();
        gui::IGUIEnvironment* env = device->getGUIEnvironment();
        
        switch ( event.GUIEvent.EventType )
        {
        case gui::EGET_BUTTON_CLICKED:
                if ( id == 101 )
                {
                     device->closeDevice();
                     return true;
                }
                
                if ( id == 102 )
                {
                     gui::IGUIWindow* window = env->addWindow (
                         core::rect<s32> ( 100 + cnt, 100 + cnt, 300 + cnt, 360 + cnt),
                         true, //modal
                         L"Start a new game");
                         
                     env->addStaticText ( L"Select difficulty level",
                         core::rect<s32>( 35, 35, 140, 50),
                         true, //border?
                         false, //wordwrap?
                         window);
                         
                     env->addButton ( core::rect<s32>( 35, 55, 140, 85 ),
                         window, 121,
                         L"Baby" );
                         
                     env->addButton ( core::rect<s32>( 35, 90, 140, 120 ),
                         window, 122,
                         L"Teen" );
                         
                     env->addButton ( core::rect<s32>( 35, 125, 140, 155 ),
                         window, 123,
                         L"Mature" );
                         
                     return true;
                }
                
                if ( id == 103 )
                {
                    openDialog = env->addFileOpenDialog ( L"Select save file to load",
                         true, //modal
                         0,    //parent
                         131 );
                }
                
                if ( id == 121 )
                    difficultyLevel = 1;
                if ( id == 122 )
                    difficultyLevel = 2;
                if ( id == 123 )
                    difficultyLevel = 3;
                    
                break;
        case gui::EGET_FILE_SELECTED:
                env->addMessageBox ( L"The file you selected was:",
                    openDialog->getFilename(),
                    true,
                    gui::EMBF_OK,
                    0, 221 );
                break;
        }
    }
}

Funny that all this used to work.

[Lollerball]

D'oh! I found the mistake It was in a completely different file. Now the program starts as it's supposed to.

But there's another problem: The buttons that are shown in the window, they don't work. I wonder what's wrong with that.

[bal]

Add a

return false;

at the end (before the last "}") ?

[Lollerball]

Thank you!