SDL_UpdateWindowSurface - Man Page

#include <SDL3/SDL_video.h>

bool SDL_UpdateWindowSurface(SDL_Window *window);

This is the function you use to reflect any changes to the surface on the screen.

This function is equivalent to the SDL 1.2 API SDL_Flip().

window

the window to update.

Returns true on success or false on failure; call SDL_GetError() for more information.

This function should only be called on the main thread.

This function is available since SDL 3.2.0.

SDL_GetWindowSurface(3), SDL_UpdateWindowSurfaceRects(3)

SDL_GetWindowSurface(3), SDL_UpdateWindowSurfaceRects(3).