Linux Manuals · Linux Manuals session 3 SDL_LockYUVOverlay (3) Linux Manual Page ByLinux Manual Posted onApr 21, 2026 SDL_LockYUVOverlay – Lock an overlay Synopsis#include "SDL.h" int SDL_LockYUVOverlay(SDL_Overlay *overlay); DescriptionMuch the same as SDL_LockSurface, SDL_LockYUVOverlay locks the overlay for direct access to pixel data. Return ValueReturns 0 on success, or -1 on an error. See AlsoSDL_UnlockYUVOverlay, SDL_CreateYUVOverlay, SDL_Overlay