自画按钮ActiveX控件，能截获鼠标离开消息，弥补VB中无法捕获鼠标离开实践的缺陷，完成鼠标离开控件时的一系列操作。 开发工具：VB6.0-Since the painting button ActiveX control, can be intercepted by the mouse to leave the news to make up for the VB can not capture the mouse to leave the practice of defects,