Render a window

How to operate

SDL is implemented in C, so if you need extern “C” in C++ then introduce a header file

#include <SDL.h>
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Create window render

Extern "C" {#include "SDL. H "} int main(int argc, char* argv[]) { SDL_Init(SDL_INIT_VIDEO); SDL_Window* window = SDL_CreateWindow("SDL2 Window", 100, 100, 640, 480, SDL_WINDOW_SHOWN | SDL_WINDOW_BORDERLESS); SDL_Renderer* render = SDL_CreateRenderer(window, -1, 0); SDL_SetRenderDrawColor(render, 255, 255, 0, 255); SDL_RenderClear(render); SDL_RenderPresent(render); SDL_Delay(5000); // Run end destroy SDL_DestroyWindow(window); SDL_Quit(); return 0; }Copy the code

The above code can be run directly to see the effect

API brief Introduction

Create and destroy Windows

/ / create SDL_Window * window = SDL_CreateWindow (" window "SDL2, 100, 100, 640, 480, SDL_WINDOW_SHOWN | SDL_WINDOW_BORDERLESS);  // Run end destroy SDL_DestroyWindow(window);Copy the code

Create renderer

SDL_Renderer* render = SDL_CreateRenderer(window, -1, 0); We can render a yellow background in the window SDL_SetRenderDrawColor(render, 255, 255, 0, 255); SDL_RenderClear(render); SDL_RenderPresent(render); SDL_Delay(3000); If (renderer) {SDL_DestroyRenderer(renderer); }Copy the code

Simple use of SDL

The above is the simplest use of SDL, drawing a yellow window on the screen

We can also draw basic graphics and the API is very simple