消息标识符                                值                                              含义
W M _ A C T I VAT E               $ 0 0 0 6                           窗口被激活或被取消激活
W M _ C H A R                        $ 0 1 0 2   按下某个键,并且已经发送了WM _ KEYDOWN和W M _KEYUP消息
W M _ C L O S E                   $ 0 0 1 0                             窗口将要关闭
W M _ K E Y D O W N          $ 0 1 0 0                            按下一个键
W M _ K E Y U P                   $ 0 1 0 1                            按键被释放
W M _ L B U T TO N D O W N $ 0 2 0 1                        按下鼠标左键
W M _ M O U S E M O V E     $ 0 2 0 0                          鼠标移动
W M _ PA I N T                      $ 0 0 0 F                        窗口的客户区需要重画
W M _ T I M E R                   $ 0 11 3                         发生了定时器事件
W M _ Q U I T                        $ 0 0 1 2                        程序将要退出