//LabelBMFont - Creation & Init
LabelBMFont *LabelBMFont::create(const std::string& str, const std::string& fntFile, float width /* = 0 */, TextHAlignment alignment /* = TextHAlignment::LEFT */,const Vec2& imageOffset /* = Vec2::ZERO */)
{
    LabelBMFont *ret = new (std::nothrow) LabelBMFont();
    if(ret && ret->initWithString(str, fntFile, width, alignment,imageOffset))
    {
        ret->autorelease();
        return ret;
    }
    CC_SAFE_DELETE(ret);
    return nullptr;
}