* @return WideImage_TrueColorImage
     */
    static function createTrueColorImage($width, $height)
    {
        return WideImage_TrueColorImage::create($width, $height);
    }
    /**
     * Check whether the given handle is a valid GD resource
     * 
     * @param mixed $handle The variable to check
     * @return bool
     */
    static function isValidImageHandle($handle)
    {
        return is_resource($handle) && get_resource_type($handle) == 'gd';
    }
    /**
     * Throws exception if the handle isn't a valid GD resource
     * 
     * @param mixed $handle The variable to check
     */
    static function assertValidImageHandle($handle)
    {
        if (!self::isValidImageHandle($handle)) {
            throw new WideImage_InvalidImageHandleException("{$handle} is not a valid image handle.");
        }
    }
}
WideImage::checkGD();
WideImage::registerCustomMapper('WideImage_Mapper_BMP', 'image/bmp', 'bmp');
WideImage::registerCustomMapper('WideImage_Mapper_TGA', 'image/tga', 'tga');