SDL_INIT_INTERFACE(3)

NAME
SDL_INIT_INTERFACE - A macro to initialize an SDL interface.

HEADER FILE
Defined in SDL3/SDL_stdinc.h

SYNOPSIS
#include "SDL3/SDL.h"

#define SDL_INIT_INTERFACE(iface)               .BI do{.BI        SDL_zerop(iface);                       .BI (iface)->version=sizeof(*(iface));.BI    } while (0)

DESCRIPTION
This macro will initialize an SDL interface structure and should be called before you fill out the fields with your implementation.

You can use it like this:

        SDL_IOStreamInterface iface;

        SDL_INIT_INTERFACE(&iface);

        // Fill in the interface function pointers with your implementation
        iface.seek = ...

        stream = SDL_OpenIO(&iface, NULL);

If you are using designated initializers, you can use the size of the interface as the version, e.g.

        SDL_IOStreamInterface iface = {
            .version = sizeof(iface),
            .seek = ...
        };
        stream = SDL_OpenIO(&iface, NULL);

THREAD SAFETY
It is safe to call this macro from any thread.

AVAILABILITY
This macro is available since SDL 3.2.0.

SEE ALSO
•(3), SDL_IOStreamInterface(3type), •(3), SDL_StorageInterface(3type), •(3), SDL_VirtualJoystickDesc(3type)