I know there exists a msg called ABN_STATECHANE to allow us to notify the taskbar's autohide or always-on-top state has been changed.
However, I don't know to how to catch this msg in my application. Until now, I have tried to catch this msg at the function PreTranslateMessage() but it is not successfully.
I have read some articles which have pointed out that I can catch this msg at the window proc. What is window Procedure? How can I use this function?