Question

我有我的pod类型：

   struct TexImageParams2D
    {
        /*! Width of the texture image */
        GLsizei width;
        /*! Height of the texture image */
        GLsizei height;
        /*! Pointer to image data */
        const GLvoid *pixels;

        /*! For efficiency we don't like to sent texture image over and over again.
         * \param[in] rhs The new texture params which will be compared with this one
         */
        bool operator !=( const TexImageParams2D& rhs )
        {
            return !(width == rhs.width && height == rhs.height && pixels == rhs.pixels);
        }

        /*! We  check is this struct is instantiated with proper values by checking the data pointer  */
        bool isActive()
        {
            return pixels;
        }

        /*! When this class is reseted we use this method to reset vales  */
        void clear()
        {
            width = 0;
            height = 0;
            pixels = nullptr;
        }
    };

这适用于gcc 4.8

RendererStateTextureUnits::TexImageParams2D temp = RendererStateTextureUnits::TexImageParams2D{ width, height, pixels};

但亲爱的vs 2010编译器唠叨如下：

error C2275: 'Graphics::RendererStateTextureUnits::TexImageParams2D' : illegal use of this type as an expression 
error C2143: syntax error : missing ';' before '{' 
error C2143: syntax error : missing ';' before '}'

POD初始化是不是很老的功能，甚至在C中都支持？为什么VS2010唠叨呢？如果VS2010不支持Visual Studio开始支持POD括号初始化的版本？

Answer 1

使用花括号{}的统一初始化是在C ++ 11标准中引入的，Visual Studio 2010编译器没有实现该标准。

尝试改为

RendererStateTextureUnits::TexImageParams2D temp = { width, height, pixels};

在VS 2010中用括号初始化POD类型是不可能的？

1 个答案: