用sdl渲染图片到窗口，想让图片居中显示，拉伸窗口图片会移动

SDL_Rect.w和SDL_Rect.h，SDL_Rec.x都固定了，SDL_SDL_Rect.y=(窗口高度-SDL_Rect.h)/2，
case SDL_WINDOWEVENT_RESIZED:
SDL_LockMutex(sdlVideoInfo->mutex); SDL_GetWindowSize(sdlVideoInfo->window,&sdlVideoInfo->screen_w,&sdlVideoInfo->screen_h); SDL_UnlockMutex(sdlVideoInfo->mutex);
在SDL_WINDOWEVENT_RESIZED事件中，获取了窗口新的宽度和高度，出现这种奇怪的现象？
是不是窗口拉伸，sdl窗口是不是要重新创建啊，目前这个窗口是个qwidget

请教大佬解惑！！播放器现在卡到这了！！

SDL_SDL_Rect.y=(窗口高度-SDL_Rect.h)/2，为什么两边的空白不对称啊

解决了，拉伸窗口，需要重建render和texture
改成这样就可以了
//让画面按比例缩放
case SDL_WINDOWEVENT_RESIZED: SDL_LockMutex(sdlVideoInfo->mutex); SDL_GetWindowSize(sdlVideoInfo->window,&sdlVideoInfo->screen_w,&sdlVideoInfo->screen_h);
SDL_DestroyRenderer(sdlVideoInfo->render); SDL_DestroyTexture(sdlVideoInfo->texture);
sdlVideoInfo->render = SDL_CreateRenderer(sdlVideoInfo->window, -1, SDL_RENDERER_TARGETTEXTURE); sdlVideoInfo->texture = SDL_CreateTexture(sdlVideoInfo->render, sdlVideoInfo->pixformat, SDL_TEXTUREACCESS_STREAMING, pixel_w,pixel_h ); SDL_UnlockMutex(sdlVideoInfo->mutex);
break;