此示例创建一个按钮，该按钮显示三个不同的双…

This sample creates a button that displays itself with one of three different bitmaps, depending on its state. The button has a bitmap for: the unpushed state; the hover state (when the mouse moves over the button); and the pushed state. Default bitmaps are included with the sample, but you can override these properties to use your own bitmaps.-This sample creates a button that displays itself with one of three different bitmaps, depending on its state. The button has a bitmap for: the unpushed state the hover state (when the mouse moves over the button) and the pushed state. Default bitmaps are included with the sample, but you can override these properties to use your own bitmaps.