README-winrt.md: Cleaned up sample code

- Fixed the markdown.
- Code can now be exited by pressing ESC.
- Cleans up and returns from main()
- Mushed all the `if (x) { return 0; }` blocks into else ifs.
This commit is contained in:
Ryan C. Gordon 2021-08-03 21:52:47 -04:00 committed by GitHub
parent 32f909f7e3
commit 178c95f82c
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@ -352,38 +352,41 @@ source file, such as, "main.cpp".
your project, and open the file in Visual C++'s text editor.
7. Copy and paste the following code into the new file, then save it.
#include <SDL.h>
```c
#include <SDL.h>
int main(int argc, char **argv)
{
SDL_DisplayMode mode;
SDL_Window * window = NULL;
SDL_Renderer * renderer = NULL;
SDL_Event evt;
int main(int argc, char **argv)
{
SDL_DisplayMode mode;
SDL_Window * window = NULL;
SDL_Renderer * renderer = NULL;
SDL_Event evt;
SDL_bool keep_going = SDL_TRUE;
if (SDL_Init(SDL_INIT_VIDEO) != 0) {
return 1;
} else if (SDL_GetCurrentDisplayMode(0, &mode) != 0) {
return 1;
} else if (SDL_CreateWindowAndRenderer(mode.w, mode.h, SDL_WINDOW_FULLSCREEN, &window, &renderer) != 0) {
return 1;
}
if (SDL_Init(SDL_INIT_VIDEO) != 0) {
return 1;
while (keep_going) {
while (SDL_PollEvent(&evt)) {
if ((evt.type == SDL_KEYDOWN) && (evt.key.keysym.sym == SDLK_ESCAPE)) {
keep_going = SDL_FALSE;
}
}
if (SDL_GetCurrentDisplayMode(0, &mode) != 0) {
return 1;
}
if (SDL_CreateWindowAndRenderer(mode.w, mode.h, SDL_WINDOW_FULLSCREEN, &window, &renderer) != 0) {
return 1;
}
while (1) {
while (SDL_PollEvent(&evt)) {
}
SDL_SetRenderDrawColor(renderer, 0, 255, 0, 255);
SDL_RenderClear(renderer);
SDL_RenderPresent(renderer);
}
SDL_SetRenderDrawColor(renderer, 0, 255, 0, 255);
SDL_RenderClear(renderer);
SDL_RenderPresent(renderer);
}
SDL_Quit();
return 0;
}
```
#### 6.B. Adding code and assets ####