SDL窗口不显示

本文介绍了SDL窗口不显示的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

这是我的代码：

#include <iostream> #include <SDL2/SDL.h> int main(int argc, const char * argv[]) { SDL_Init(SDL_INIT_VIDEO); SDL_Window *_window; _window = SDL_CreateWindow("Game Engine", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 700, 500, SDL_WINDOW_RESIZABLE); SDL_Delay(20000); SDL_DestroyWindow(_window); SDL_Quit(); return 0; }

我已经下载了SDL2并将库导入到项目构建阶段。我测试了SDL2工作正常。

Im working in Xcode. I've downloaded SDL2 and imported the library to the projects build phases. I've tested that the SDL2 works correctly.

问题是窗口从不显示。我只是得到一个spin-mac-wheel，然后程序退出延迟后。

The problem is that window never shows up. I just get a "spinning-mac-wheel" and then the program quits after the delay. I've made sure that the window is not hidden behind somewhere.

想法？

推荐答案

您必须加载位图图像或在窗口上显示某些内容，以便Xcode开始显示窗口。

You have to load a bitmap image, or display something on the window, for Xcode to start displaying the window.

#include <SDL2/SDL.h> #include <iostream> using namespace std; int main() { SDL_Window * window = nullptr; SDL_Surface * window_surface = nullptr; SDL_Surface * image_surface = nullptr; SDL_Init(SDL_INIT_VIDEO); window = SDL_CreateWindow("Window", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 640, 480, SDL_WINDOW_SHOWN); window_surface = SDL_GetWindowSurface(window); image_surface = SDL_LoadBMP("image.bmp"); SDL_BlitSurface(image_surface, NULL, window_surface, NULL); SDL_UpdateWindowSurface(window); SDL_Delay(5000); SDL_DestroyWindow(window); SDL_FreeSurface(image_surface); SDL_Quit(); }