wglChoosePixelFormatARB选择像素格式时总是返回-1

最近正在学习OpengGL超级宝典第五版，在第十三章有个示例SphereWorld_redux和block_redux，这两个例子中都用到了wglChoosePixelFormatARB，在我的windows7的操作系统上，wglChoosePixelFormatARB总是返回-1。代码如下：

 int nPixCount = 0;

    // Specify the important attributes we careabout

    int pixAttribs[] = {WGL_SUPPORT_OPENGL_ARB, 1, // Must support OGL rendering

                        WGL_DRAW_TO_WINDOW_ARB, 1, // pf that can run a window

                        WGL_ACCELERATION_ARB,   1, // mustbe HW accelerated

                        WGL_COLOR_BITS_ARB,     24, // 8bits of each R, G and B

                        WGL_DEPTH_BITS_ARB,     16, // 16bits of depth precision for window

                         WGL_DOUBLE_BUFFER_ARB, GL_TRUE, // Double buffered context

                        WGL_SAMPLE_BUFFERS_ARB,GL_TRUE,// MSAA on

                        WGL_SAMPLES_ARB,8,// MSAA 8x

                        WGL_PIXEL_TYPE_ARB,      WGL_TYPE_RGBA_ARB, // pf should be RGBA type

                         0}; // NULLtermination

     // Ask OpenGL to find the most relevantformat matching our attribs

    // Only get one format back.

    wglChoosePixelFormatARB(g_hDC,&pixAttribs[0], NULL, 1, &nPixelFormat, (UINT*)&nPixCount);

经过反复调试，发现WGL_ACCELERATION_ARB,属性导致wglChoosePixelFormatARB查找不到正确的像素格式，解决方法如下：

把pixAttribs里面的属性选项WGL_ACCELERATION_ARB, 1,取消掉，wglChoosePixelFormatARB能够找到合适的像素格式。