SDL_SysWMEvent — Platform-dependent window manager event.
The system window manager event contains a pointer to
      system-specific information about unknown window manager
      events. If you enable this event using SDL_EventState(), it will be generated
      whenever unhandled events are received from the window
      manager. This can be used, for example, to implement
      cut-and-paste in your application.
| typedef | struct { | |||
| Uint8 | 
              type; | 
              
                 
                  /* Always SDL_SysWM */
                 
               | 
            ||
| } SDL_SysWMEvent; | ||||
If you want to obtain system-specific information about
      the window manager, you can fill the version member of a
      SDL_SysWMinfo structure
      (details can be found in SDL_syswm.h, which must be included) using
      the SDL_VERSION() macro found
      in SDL_version.h, and pass it
      to the function:
int SDL_GetWMInfo(SDL_SysWMinfo *info);