实现按钮自绘，给按钮添加背景(png图片背景等等)，颜色透明等，根据鼠标消息响应不同状态，是界面编程很有用的源代码。-EnglishChinese (Simplified)SpanishAlpha To achieve self-painted button, the button to add a background (png, background images, etc.), transparent color, etc., according to the mouse messag