dxut.cpp

声音和图片的加载功能,不过运行起来有点卡

                    GetDXUTState().SetOverrideStartY( nY );
                    continue;
                }
            }

            if( DXUTIsNextArg( strCmdLine, L"constantframetime" ) )
            {
                float fTimePerFrame;
                if( DXUTGetCmdParam( strCmdLine, strFlag ) )
                    fTimePerFrame = (float)wcstod( strFlag, NULL );
                else
                    fTimePerFrame = 0.0333f;
                GetDXUTState().SetOverrideConstantFrameTime( true );
                GetDXUTState().SetOverrideConstantTimePerFrame( fTimePerFrame );
                DXUTSetConstantFrameTime( true, fTimePerFrame );
                continue;
            }

            if( DXUTIsNextArg( strCmdLine, L"quitafterframe" ) )
            {
                if( DXUTGetCmdParam( strCmdLine, strFlag ) )
                {
                    int nFrame = _wtoi(strFlag);
                    GetDXUTState().SetOverrideQuitAfterFrame( nFrame );
                    continue;
                }
            }

            if( DXUTIsNextArg( strCmdLine, L"noerrormsgboxes" ) )
            {
                GetDXUTState().SetShowMsgBoxOnError( false );
                continue;
            }

            if( DXUTIsNextArg( strCmdLine, L"nostats" ) )
            {
                GetDXUTState().SetNoStats( true );
                continue;
            }

            if( DXUTIsNextArg( strCmdLine, L"relaunchmce" ) )
            {
                GetDXUTState().SetOverrideRelaunchMCE( true );
                continue;
            }

            if( DXUTIsNextArg( strCmdLine, L"automation" ) )
            {
                GetDXUTState().SetAutomation( true );
                continue;
            }
        }

        // Unrecognized flag
        StringCchCopy( strFlag, 256, strCmdLine ); 
        WCHAR* strSpace = strFlag;
        while (*strSpace && (*strSpace > L' '))
            strSpace++;
        *strSpace = 0;

        DXUTOutputDebugString( L"Unrecognized flag: %s", strFlag );
        strCmdLine += wcslen(strFlag);
    }
}


//--------------------------------------------------------------------------------------
// Helper function for DXUTParseCommandLine
//--------------------------------------------------------------------------------------
bool DXUTIsNextArg( WCHAR*& strCmdLine, WCHAR* strArg )
{
    int nArgLen = (int) wcslen(strArg);
    int nCmdLen = (int) wcslen(strCmdLine);

    if( nCmdLen >= nArgLen && 
        _wcsnicmp( strCmdLine, strArg, nArgLen ) == 0 && 
        (strCmdLine[nArgLen] == 0 || strCmdLine[nArgLen] == L':') )
    {
        strCmdLine += nArgLen;
        return true;
    }

    return false;
}


//--------------------------------------------------------------------------------------
// Helper function for DXUTParseCommandLine.  Updates strCmdLine and strFlag 
//      Example: if strCmdLine=="-width:1024 -forceref"
// then after: strCmdLine==" -forceref" and strFlag=="1024"
//--------------------------------------------------------------------------------------
bool DXUTGetCmdParam( WCHAR*& strCmdLine, WCHAR* strFlag )
{
    if( *strCmdLine == L':' )
    {       
        strCmdLine++; // Skip ':'

        // Place NULL terminator in strFlag after current token
        StringCchCopy( strFlag, 256, strCmdLine );
        WCHAR* strSpace = strFlag;
        while (*strSpace && (*strSpace > L' '))
            strSpace++;
        *strSpace = 0;
    
        // Update strCmdLine
        strCmdLine += wcslen(strFlag);
        return true;
    }
    else
    {
        strFlag[0] = 0;
        return false;
    }
}


//--------------------------------------------------------------------------------------
// Creates a window with the specified window title, icon, menu, and 
// starting position.  If DXUTInit() has not already been called, it will
// call it with the default parameters.  Instead of calling this, you can 
// call DXUTSetWindow() to use an existing window.  
//--------------------------------------------------------------------------------------
HRESULT WINAPI DXUTCreateWindow( const WCHAR* strWindowTitle, HINSTANCE hInstance, 
                                 HICON hIcon, HMENU hMenu, int x, int y )
{
    HRESULT hr;

    // Not allowed to call this from inside the device callbacks
    if( GetDXUTState().GetInsideDeviceCallback() )
        return DXUT_ERR_MSGBOX( L"DXUTCreateWindow", E_FAIL );

    GetDXUTState().SetWindowCreateCalled( true );

    if( !GetDXUTState().GetDXUTInited() ) 
    {
        // If DXUTInit() was already called and failed, then fail.
        // DXUTInit() must first succeed for this function to succeed
        if( GetDXUTState().GetDXUTInitCalled() )
            return E_FAIL; 

        // If DXUTInit() hasn't been called, then automatically call it
        // with default params
        hr = DXUTInit();
        if( FAILED(hr) )
            return hr;
    }

    if( DXUTGetHWNDFocus() == NULL )
    {
        if( hInstance == NULL ) 
            hInstance = (HINSTANCE)GetModuleHandle(NULL);
        GetDXUTState().SetHInstance( hInstance );

        WCHAR szExePath[MAX_PATH];
        GetModuleFileName( NULL, szExePath, MAX_PATH );
        if( hIcon == NULL ) // If the icon is NULL, then use the first one found in the exe
            hIcon = ExtractIcon( hInstance, szExePath, 0 ); 

        // Register the windows class
        WNDCLASS wndClass;
        wndClass.style = CS_DBLCLKS;
        wndClass.lpfnWndProc = DXUTStaticWndProc;
        wndClass.cbClsExtra = 0;
        wndClass.cbWndExtra = 0;
        wndClass.hInstance = hInstance;
        wndClass.hIcon = hIcon;
        wndClass.hCursor = LoadCursor( NULL, IDC_ARROW );
        wndClass.hbrBackground = (HBRUSH)GetStockObject(BLACK_BRUSH);
        wndClass.lpszMenuName = NULL;
        wndClass.lpszClassName = L"Direct3DWindowClass";

        if( !RegisterClass( &wndClass ) )
        {
            DWORD dwError = GetLastError();
            if( dwError != ERROR_CLASS_ALREADY_EXISTS )
                return DXUT_ERR_MSGBOX( L"RegisterClass", HRESULT_FROM_WIN32(dwError) );
        }

        // Override the window's initial & size position if there were cmd line args
        if( GetDXUTState().GetOverrideStartX() != -1 )
            x = GetDXUTState().GetOverrideStartX();
        if( GetDXUTState().GetOverrideStartY() != -1 )
            y = GetDXUTState().GetOverrideStartY();

        GetDXUTState().SetWindowCreatedWithDefaultPositions( false );
        if( x == CW_USEDEFAULT && y == CW_USEDEFAULT )
            GetDXUTState().SetWindowCreatedWithDefaultPositions( true );

        // Find the window's initial size, but it might be changed later
        int nDefaultWidth = 640;
        int nDefaultHeight = 480;
        if( GetDXUTState().GetOverrideWidth() != 0 )
            nDefaultWidth = GetDXUTState().GetOverrideWidth();
        if( GetDXUTState().GetOverrideHeight() != 0 )
            nDefaultHeight = GetDXUTState().GetOverrideHeight();

        RECT rc;
        SetRect( &rc, 0, 0, nDefaultWidth, nDefaultHeight );        
        AdjustWindowRect( &rc, WS_OVERLAPPEDWINDOW, ( hMenu != NULL ) ? true : false );

        WCHAR* strCachedWindowTitle = GetDXUTState().GetWindowTitle();
        StringCchCopy( strCachedWindowTitle, 256, strWindowTitle );

        // Create the render window
        HWND hWnd = CreateWindow( L"Direct3DWindowClass", strWindowTitle, WS_OVERLAPPEDWINDOW,
                                  x, y, (rc.right-rc.left), (rc.bottom-rc.top), 0,
                                  hMenu, hInstance, 0 );
        if( hWnd == NULL )
        {
            DWORD dwError = GetLastError();
            return DXUT_ERR_MSGBOX( L"CreateWindow", HRESULT_FROM_WIN32(dwError) );
        }

        GetDXUTState().SetWindowCreated( true );
        GetDXUTState().SetHWNDFocus( hWnd );
        GetDXUTState().SetHWNDDeviceFullScreen( hWnd );
        GetDXUTState().SetHWNDDeviceWindowed( hWnd );
    }

    return S_OK;
}


//--------------------------------------------------------------------------------------
// Sets a previously created window for the framework to use.  If DXUTInit() 
// has not already been called, it will call it with the default parameters.  
// Instead of calling this, you can call DXUTCreateWindow() to crea