To fix this issue, it appears that SDL_PollEvent() may need to be called in order to make the window appear and this behaviour can be dependent on the operating system used to run the program. Adding a simple while() loop to keep the program running does not appear to be sufficient to force SDL to keep a window open. This issue is discussed here: Why does my window only get shown after I use SDL_PollEvent()?

#include <SDL2/SDL.h> #include <stdio.h> int main(int argc, char* argv[]) { // Variables used by the event loop SDL_bool quit = SDL_FALSE; SDL_Event e = { 0 }; // Initialize SDL if (SDL_Init(SDL_INIT_EVERYTHING) != 0) { printf("SDL_Init Error: %s\n", SDL_GetError()); return 1; } // Create a window SDL_Window *win = SDL_CreateWindow("Hello, SDL2!", 100, 100, 640, 480, SDL_WINDOW_SHOWN); if (win == NULL) { printf("SDL_CreateWindow Error: %s\n", SDL_GetError()); SDL_Quit(); return 1; } // Create a renderer SDL_Renderer *ren = SDL_CreateRenderer(win, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC); if (ren == NULL) { SDL_DestroyWindow(win); printf("SDL_CreateRenderer Error: %s\n", SDL_GetError()); SDL_Quit(); return 1; } // Set the draw color to blue SDL_SetRenderDrawColor(ren, 0, 0, 255, 255); // Clear the window SDL_RenderClear(ren); // Present the window SDL_RenderPresent(ren); // Event loop while (!quit) { while (SDL_PollEvent(&e)) { switch (e.type) { case SDL_QUIT: quit = SDL_TRUE; break; default:break; } } } // Clean up SDL_DestroyRenderer(ren); SDL_DestroyWindow(win); SDL_Quit(); return 0; } ``` 

To fix this issue, it appears that SDL_PollEvent() may need to be called in order to make the window appear and this behaviour can be dependent on the operating system used to run the program. Adding a simple while() loop to keep the program running does not appear to be sufficient to keep a window open. This issue is discussed here: Why does my window only get shown after I use SDL_PollEvent()?

#include <SDL2/SDL.h> #include <stdio.h> int main(int argc, char* argv[]) { // Variables used by the event loop SDL_bool quit = SDL_FALSE; SDL_Event e = { 0 }; // Initialize SDL if (SDL_Init(SDL_INIT_EVERYTHING) != 0) { printf("SDL_Init Error: %s\n", SDL_GetError()); return 1; } // Create a window SDL_Window *win = SDL_CreateWindow("Hello, SDL2!", 100, 100, 640, 480, SDL_WINDOW_SHOWN); if (win == NULL) { printf("SDL_CreateWindow Error: %s\n", SDL_GetError()); SDL_Quit(); return 1; } // Create a renderer SDL_Renderer *ren = SDL_CreateRenderer(win, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC); if (ren == NULL) { SDL_DestroyWindow(win); printf("SDL_CreateRenderer Error: %s\n", SDL_GetError()); SDL_Quit(); return 1; } // Set the draw color to blue SDL_SetRenderDrawColor(ren, 0, 0, 255, 255); // Clear the window SDL_RenderClear(ren); // Present the window SDL_RenderPresent(ren); // Event loop while (!quit) { while (SDL_PollEvent(&e)) { switch (e.type) { case SDL_QUIT: quit = SDL_TRUE; break; default:break; } } } // Clean up SDL_DestroyRenderer(ren); SDL_DestroyWindow(win); SDL_Quit(); return 0; } 

To fix this issue, it appears that SDL_PollEvent() may need to be called in order to make the window appear. Adding a simple while() loop to keep the program running does not appear to be sufficient to force SDL to keep a window open.

To fix this issue, it appears that SDL_PollEvent() may need to be called in order to make the window appear and this behaviour can be dependent on the operating system used to run the program. Adding a simple while() loop to keep the program running does not appear to be sufficient to force SDL to keep a window open. This issue is discussed here: Why does my window only get shown after I use SDL_PollEvent()?