createwindow.cpp

// Using SDL2 to create an application window
#include <SDL2/SDL.h>
#include <iostream>

int main(int argc, char* argv[]){

  SDL_Init(SDL_INIT_VIDEO);   // Initialize SDL2
  
  SDL_Window *window;        // Declare a pointer to an SDL_Window
  
  // Create an application window with the following settings:
  window = SDL_CreateWindow( 
    "An SDL2 window",         //    const char* title
    SDL_WINDOWPOS_UNDEFINED,  //    int x: initial x position
    SDL_WINDOWPOS_UNDEFINED,  //    int y: initial y position
    640,                      //    int w: width, in pixels
    480,                      //    int h: height, in pixels
    SDL_WINDOW_SHOWN          //    Uint32 flags: window options, see docs
  );
  
  // Check that the window was successfully made
  if(window==NULL){   
    // In the event that the window could not be made...
    std::cout << "Could not create window: " << SDL_GetError() << '\n';
    SDL_Quit(); 
    return 1;
  } 
    
  // The window is open: enter program loop (see SDL_PollEvent)
  SDL_Delay(3000);  // Wait for 3000 milliseconds, for example
  
  // Close and destroy the window
  SDL_DestroyWindow(window); 
  
  // Clean up SDL2 and exit the program
  SDL_Quit(); 
  return 0;   
 
}