Manpages - SDL_ActiveEvent.3

SDL_ActiveEvent - Application visibility event structure

  typedef struct{
    Uint8 type;
    Uint8 gain;
    Uint8 state;
  } SDL_ActiveEvent;

type

SDL_ACTIVEEVENT.

gain

0 if the event is a loss or 1 if it is a gain.

state

SDL_APPMOUSEFOCUS if mouse focus was gained or lost, SDL_APPINPUTFOCUS if input focus was gained or lost, or SDL_APPACTIVE if the application was iconified (*gain*=0) or restored(*gain*=1).

SDL_ActiveEvent is a member of the SDL_Event union and is used when an event of type SDL_ACTIVEEVENT is reported.

When the mouse leaves or enters the window area a SDL_APPMOUSEFOCUS type activation event occurs, if the mouse entered the window then gain will be 1, otherwise gain will be 0. A SDL_APPINPUTFOCUS type activation event occurs when the application loses or gains keyboard focus. This usually occurs when another application is made active. Finally, a SDL_APPACTIVE type event occurs when the application is either minimised/iconified (*gain*=0) or restored.

*Note: *

This event does not occur when an application window is first created.

SDL_Event, SDL_GetAppState