###### (This is the documentation for SDL3, which is the current stable version. [SDL2](https://wiki.libsdl.org/SDL2/) was the previous version!) # SDL_PIXELFLAG A macro to retrieve the flags of an [SDL_PixelFormat](SDL_PixelFormat). ## Header File Defined in [](https://github.com/libsdl-org/SDL/blob/main/include/SDL3/SDL_pixels.h) ## Syntax ```c #define SDL_PIXELFLAG(format) (((format) >> 28) & 0x0F) ``` ## Macro Parameters | | | | ---------- | ----------------------------------------------- | | **format** | an [SDL_PixelFormat](SDL_PixelFormat) to check. | ## Return Value Returns the flags of `format`. ## Remarks This macro is generally not needed directly by an app, which should use specific tests, like [SDL_ISPIXELFORMAT_FOURCC](SDL_ISPIXELFORMAT_FOURCC), instead. ## Thread Safety It is safe to call this macro from any thread. ## Version This macro is available since SDL 3.1.3. ---- [CategoryAPI](CategoryAPI), [CategoryAPIMacro](CategoryAPIMacro), [CategoryPixels](CategoryPixels)