Gets a reference to the default user handle for GDK.
Defined in <SDL3/SDL_system.h>
bool SDL_GetGDKDefaultUser(XUserHandle *outUserHandle);
XUserHandle * | outUserHandle | a pointer to be filled in with the default user handle. |
(bool) Returns true if success or false on failure; call SDL_GetError() for more information.
This is effectively a synchronous version of XUserAddAsync, which always prefers the default user and allows a sign-in UI.
This function is available since SDL 3.1.3.