I do not know if this is the right way to ask questions, but come on. I'm using mingw and looking at the documentation microssoft it has the following definition: # define WM_CLIPBOARDUPDATE ox31d. However when trying to use it within the mingw project in my definition does not exist. Looking inside the file "winuser.h" folder of the compiler also did not find any results. They forgot to put it in the header file? I know I can use the number to check the event but this variable should not exist within the header file? Thank you for listening.

Ps: Sorry for my bad English, I used the "google translator": (