在指定的窗口内显示JPG文件，可自定义大小。-Within a specified window display JPG files, you can customize the size.

显示bmp图片，同时按照界面操作数据库,进行数据库读写操作，方便实用-Bmp image display, while according to the operation of the interface, read and write operations, convenient and practical

简单图片显示，边框变色，获取鼠标位置坐标及rgb信息在状态栏(Simple picture display, border color, mouse position coordinates and rgb information in the status bar)