This applet demonstrates:1、receiving multiple files from a drag-drop operation 2、being a drag-drop source 3、optimizing the viewer for performance--creating thumbnails on the fly and owner draw issues 4、usability issues--changing image and form sizes

可以把PNG格式转换为ICO格式，很简单，很还用的，只要拖拽就行。-PNG format can be converted to ICO format is very simple, it is also used, as long as the drag on the line.

图片加载并，旋转显示，鼠标滚动图片可放大和放大后可拖动图片。-Image loading, rotating display, zoom and drag

fixed for framebuffer mode 1. scroll text black 2. show words wrong 3. drag and drop http://fatalfeel.blogspot.tw/2013/09/static-gtk-2172-directfb-cross-compile.html