（1）在工具栏中点击“打开”功能出现文件打开窗口，用户选择一幅bmp图片后在指定区域靠左显示该图片，若图片尺寸小于指定区域则按原始大小显示；若大于则按合适比例显示。

（2）在工具栏中依次实现附件2中的各项图像处理功能，每一个功能都是在上一次的操作基础上进行，工具栏中须具备“返回上一次操作”的功能，并且能够随时还原原图（请注意：有些图像处理功能对图片格式有要求，如灰度直方图均衡必须要求是灰度图，因此请考虑各功能之间的关系，添加必要的防御代码）。

（3）在工具栏中点击“保存”功能出现文件保存窗口，用户可以选择保存路径来保存当前图片处理结果。

（4）点击“关闭”功能，关闭当前图片，若操作结果尚未保存则必须弹出对话框提示用户进行保存。-(1) in the tool bar, click on　Open　function has the file open window, the user selects a bmp picture to the left to display the image in the designated area, if the image size is smaller than the specified area press the original size　if more than press fit scale.

(2) in the toolbar and then click the implementation of Annex 2 image processing functions, each function is carried out in the last operation, based on the tool bar must have　to return to the previous operation　function, and can at any time restore original (Note: Some image processing functions for image format is required, such as histogram equalization must ask is grayscale, so please consider the relationship between functions, add the necessary defense code).

(3) in the tool bar, click on the　Save　function appears to save the file window, the user can choose to save the path to save the current image processing results.

(4) Click　Close　function closes the current image, if the operation results are not yet s