vc button控件，gif按钮，按钮上显示gif动画，使用了 cpictureex 控件显示动画-vc button controls, gif button, the button displayed on gif animation, the use of animation shows cpictureex Controls

介绍两个 C++ 类—— CPictureEx 和 CPictureExWnd，使用它们可以在 MFC 和 ATL 工程中使用动画GIF效果。-Introduction 2 C++ classes- CPictureEx and CPictureExWnd, use them in the MFC and ATL projects to use animated GIF effect.

CPicture扩展类，实现真彩图片的显示。-CPicture extend the class to achieve the true color image display.