SDL_HINT_WINDOWS_USE_D3D9EX - A variable controlling whether SDL uses the D3D9Ex API introduced in

       This hint is available since SDL 3.2.0.

Simple Directmedia Layer                           SDL 3.2.10                     SDL_HINT_WINDOWS_USE_D3D9EX(3)

       Direct3D 9Ex contains changes to state management that can eliminate device loss errors during  scenarios
       like  Alt+Tab  or  UAC  prompts. D3D9Ex may require some changes to your application to cope with the new
       behavior, so this is disabled by default.

       For more information on Direct3D 9Ex, see:

       •               https://docs.microsoft.com/en-us/windows/win32/direct3darticles/graphics-apis-in-windows-
       vista#direct3d-9ex

       • https://docs.microsoft.com/en-us/windows/win32/direct3darticles/direct3d-9ex-improvements

       The variable can be set to the following values:

       • "0": Use the original Direct3D 9 API. (default)

       • "1": Use the Direct3D 9Ex API on Vista and later (and fall back if D3D9Ex
         is unavailable)

       This hint should be set before SDL is initialized.

       Defined in SDL3/SDL_hints.h

       SDL_HINT_WINDOWS_USE_D3D9EX  -  A  variable  controlling  whether  SDL  uses the D3D9Ex API introduced in
       Windows Vista, instead of normal D3D9.

#include"SDL3/SDL.h"#defineSDL_HINT_WINDOWS_USE_D3D9EXSDL_WINDOWS_USE_D3D9EX"