1. windows消息WM_ 2. WM_NULL = $0000; 3. WM_CREATE = $0001; 4. 应用程序创建一个窗口 5. WM_DESTROY = $0002; 6. 一个窗口被销毁 7. WM_MOVE = $0003; 8. 移动一个窗口 9. WM_SIZE = $0005; 10. 改变一个窗口的大小 11. WM_ACTIVATE = $0006; 12. 一个窗口被激活或失去激活状态; 13. WM_SETFOCUS = $0007; 14. 获得焦点后 15. WM_KILLFOCUS = $0008; 16. 失去焦点 17. WM