SDL_SetWindowAlwaysOnTop - Man Page

#include <SDL3/SDL_video.h>

bool SDL_SetWindowAlwaysOnTop(SDL_Window *window, bool on_top);

This will add or remove the window's SDL_WINDOW_ALWAYS_ON_TOP flag. This will bring the window to the front and keep the window above the rest.

window

the window of which to change the always on top state.

on_top

true to set the window always on top, false to disable.

for more information.

This function should only be called on the main thread.

This function is available since SDL 3.2.0.

SDL_GetWindowFlags(3)