SDL_SetWindowParent - Set the window as a child of a parent window.

       This function is available since SDL 3.2.0.

       If the window is already the child of an existing window, it will be reparented to the new owner. Setting
       the parent window to NULL unparents the window and removes child window status.

       If  a  parent  window is hidden or destroyed, the operation will be recursively applied to child windows.
       Child windows hidden with the parent that did not  have  their  hidden  status  explicitly  set  will  be
       restored when the parent is shown.

       Attempting  to  set  the  parent  of  a  window  that  is  currently  in  the  modal state will fail. Use
       SDL_SetWindowModal() to cancel the modal status before attempting to change the parent.

       Popup windows cannot change parents and attempts to do so will fail.

       Setting a parent window that is currently the sibling or  descendent  of  the  child  window  results  in
       undefined behavior.

window the window that should become the child of a parent.

       parent the new parent window for the child window.

       SDL_SetWindowParent - Set the window as a child of a parent window.

       for more information.

SDL_SetWindowModal(3)

Simple Directmedia Layer                           SDL 3.2.20                             SDL_SetWindowParent(3)

#include<SDL3/SDL_video.h>boolSDL_SetWindowParent(SDL_Window*window,SDL_Window*parent);

       This function should only be called on the main thread.