Daniel Gibson b04d026458 Add an invalid #define for SDL_ThreadID() to SDL_oldnames.h (#15801)
in SDL2 SDL_ThreadID() was a function that's now
SDL_GetCurrentThreadID(), but in SDL3 SDL_ThreadID is a type, so
in C++ `x = SDL_ThreadID()` is valid code (default constructor which
in case of integers means 0), so that's a massive footgun.

See the big comment in SDL_oldnames.h for more details.

Added `#undef SDL_ThreadID` in SDL_dynapi.c because it has one of the
(quite rare) cases  where "SDL_ThreadID" followed by a "(" is actually
correct and necessary (function pointer returning SDL_ThreadID).
2026-06-12 10:24:56 -07:00

Simple DirectMedia Layer (SDL for short) is a cross-platform library designed to make it easy to write multi-media software, such as games and emulators.

You can find the latest release and additional information at: https://www.libsdl.org/

Installation instructions and a quick introduction is available in INSTALL.md

This library is distributed under the terms of the zlib license, available in LICENSE.txt.

Enjoy!

Sam Lantinga (slouken@libsdl.org)

S
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