// =============================================================================
//  Function:   InitApp
//  Purpose:    This sets the fields of a WNDCLASSEX object and then uses it
//              to register a new windows class. Finally, it creates a new
//              fullscreen window and returns a handle to this window.
// =============================================================================

HWND InitApp (HINSTANCE instance)           // Application instance handle
{
    // Local variables

    WNDCLASSEX winClass;

    // Fill in the WNDCLASSEX object with some default values

    winClass.cbSize         = sizeof(WNDCLASSEX);
                                            // Set the size just to be safe
    winClass.style          = CS_DBLCLKS / CS_OWNDC / CS_HREDRAW / CS_VREDRAW;
                                            // Use a standard game style
    winClass.lpfnWndProc    = WinProc;      // Our message handling function
    winClass.cbClsExtra	    = 0;            // Extra class info space (not used)
    winClass.cbWndExtra	    = 0;            // Window info space (not used)
    winClass.hInstance      = instance;     // Application instance handle
    winClass.hIcon          = LoadIcon(NULL, MAKEINTRESOURCE(IDI_BIGICON));
                                            // Large icon to be used by windows
    winClass.hCursor        = LoadCursor(NULL, MAKEINTRESOURCE(IDC_ARROW));
                                            // Cursor to be used by windows
    winClass.hbrBackground  = (HBRUSH) GetStockObject(BLACK_BRUSH);
                                            // Brush used to clear the screen
    winClass.lpszMenuName   = NULL;         // No menus used
    winClass.lpszClassName  = WIN_CLASS_NAME;
                                            // Name of the new window class
    winClass.hIconSm        = LoadIcon(NULL, MAKEINTRESOURCE(IDI_SMALLICON));
                                            // Small icon to be used by windows

    // Register the window class

    if (!RegisterClassEx(&winClass))
        exit(10);

    // Create a new window

    return CreateWindowEx(NULL,             // Advanced...
                          WIN_CLASS_NAME,   // Name used to register winClass
                          WIN_TITLE,        // Name used in window title bar
                          WS_POPUP / WS_VISIBLE,
                                            // A basic, full screen style
                          0, 0,             // Window postion
                          GetSystemMetrics(SM_CXFULLSCREEN),
                                            // Set window width to the width of the desktop
                          GetSystemMetrics(SM_CYFULLSCREEN),
                                            // Set window height to the height of the desktop
                          NULL,             // Handle to parent window
                          NULL,             // Handle to window's menu
                          instance,         // Application instance
                          NULL);            // Advanced...
}