###### (This is the documentation for SDL3, which is under heavy development and the API is changing! [SDL2](https://wiki.libsdl.org/SDL2/) is the current stable version!) # SDL_MessageBoxButtonFlags [SDL_MessageBoxButtonData](SDL_MessageBoxButtonData) flags. ## Header File Defined in [](https://github.com/libsdl-org/SDL/blob/main/include/SDL3/SDL_messagebox.h) ## Syntax ```c typedef Uint32 SDL_MessageBoxButtonFlags; #define SDL_MESSAGEBOX_BUTTON_RETURNKEY_DEFAULT 0x00000001u /**< Marks the default button when return is hit */ #define SDL_MESSAGEBOX_BUTTON_ESCAPEKEY_DEFAULT 0x00000002u /**< Marks the default button when escape is hit */ ``` ## Version This datatype is available since SDL 3.0.0. ---- [CategoryAPI](CategoryAPI), [CategoryAPIDatatype](CategoryAPIDatatype), [CategoryMessagebox](CategoryMessagebox)