Qt mac sdl窗口指针

QWidget *t_newWidget = new QWidget(NULL);
t_newWidget->resize(300,400);
t_newWidget->show();

NSView * view = (NSView *) t_newWidget->winId();

NSWindow * nsWin = [view window];

SDL_Init(SDL_INIT_VIDEO);

SDL_Window* window = SDL_CreateWindowFrom((void*)nsWin);

            //SDL_CreateWindow("test windows", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED,500, 200,SDL_WINDOW_SHOWN);;

            //SDL_CreateWindowFrom((void*)t_newWidget->winId());

SDL_Renderer* render = SDL_CreateRenderer(window, -1, SDL_RENDERER_SOFTWARE);

SDL_SetRenderDrawColor(render, 255, 0, 0, 255);

SDL_RenderFillRect(render, NULL);

SDL_RenderPresent(render);

pro中添加：

LIBS += -framework Foundation

.mm中添加：

#import <cocoa/cocoa.h>

记得文件后缀要由：.cpp 改为 .mm