use SDL_SetMouseFocus
diff --git a/src/video/emscripten/SDL_emscriptenevents.c b/src/video/emscripten/SDL_emscriptenevents.c
index 02a5478..ea5776b 100644
--- a/src/video/emscripten/SDL_emscriptenevents.c
+++ b/src/video/emscripten/SDL_emscriptenevents.c
@@ -349,7 +349,8 @@ EM_BOOL
Emscripten_HandleMouseFocus(int eventType, const EmscriptenMouseEvent *mouseEvent, void *userData)
{
SDL_WindowData *window_data = userData;
- SDL_SendWindowEvent(window_data->window, eventType == EMSCRIPTEN_EVENT_MOUSEENTER ? SDL_WINDOWEVENT_ENTER : SDL_WINDOWEVENT_LEAVE, 0, 0);
+
+ SDL_SetMouseFocus(eventType == EMSCRIPTEN_EVENT_MOUSEENTER ? window_data->window : NULL);
return 1;
}