Individual button data.
Defined in <SDL3/SDL_messagebox.h>
typedef struct SDL_MessageBoxButtonData
{
SDL_MessageBoxButtonFlags flags;int buttonID; /**< User defined button id (value returned via SDL_ShowMessageBox) */
const char *text; /**< The UTF-8 button text */
} SDL_MessageBoxButtonData;
This struct is available since SDL 3.1.3.