Manpages - SDL_WM_GrabInput.3

SDL_WM_GrabInput - Grabs mouse and keyboard input.

#include “SDL.h”

SDL_GrabMode SDL_WM_GrabInput*(*SDL_GrabMode mode);

Grabbing means that the mouse is confined to the application window, and nearly all keyboard input is passed directly to the application, and not interpreted by a window manager, if any.

When mode is SDL_GRAB_QUERY the grab mode is not changed, but the current grab mode is returned.

  typedef enum {
    SDL_GRAB_QUERY,
    SDL_GRAB_OFF,
    SDL_GRAB_ON
  } SDL_GrabMode;

The current/new SDL_GrabMode.