93 lines
2.2 KiB
C
93 lines
2.2 KiB
C
#include <stdio.h>
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#include <SDL2/SDL.h>
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#define FF_QUIT_EVENT (SDL_USEREVENT + 2)
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int main()
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{
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SDL_Window *window = NULL;
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SDL_Renderer *renderer = NULL;
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SDL_Init(SDL_INIT_VIDEO);
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window = SDL_CreateWindow("SDL2 Event",
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SDL_WINDOWPOS_UNDEFINED,
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SDL_WINDOWPOS_UNDEFINED,
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640,
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480,
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SDL_WINDOW_SHOWN | SDL_WINDOW_BORDERLESS);
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if (window == NULL) {
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printf("Could not create window: %s\n", SDL_GetError());
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return 1;
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}
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renderer = SDL_CreateRenderer(window, -1, 0);
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SDL_SetRenderDrawColor(renderer, 255, 255, 0, 255);
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SDL_RenderClear(renderer);
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SDL_RenderPresent(renderer);
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SDL_Event event;
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int b_exit = 0;
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for (;;) {
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SDL_WaitEvent(&event);
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switch (event.type)
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{
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case SDL_KEYDOWN:
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switch (event.key.keysym.sym)
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{
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case SDLK_a:
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printf("user press a\n");
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break;
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case SDLK_s:
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printf("user press s\n");
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break;
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case SDLK_q:
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printf("user press q\n");
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SDL_Event event_quit;
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event_quit.type = FF_QUIT_EVENT;
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SDL_PushEvent(&event_quit);
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break;
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default:
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printf("key down 0x%x\n", event.key.keysym.sym);
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break;
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}
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break;
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case SDL_MOUSEBUTTONDOWN:
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if (event.button.button == SDL_BUTTON_LEFT) {
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printf("mouse left press\n");
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}
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else if (event.button.button == SDL_BUTTON_RIGHT) {
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printf("mouse right press\n");
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}
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else {
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printf("mouse down %d\n", event.button.button);
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}
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break;
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case SDL_MOUSEMOTION:
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printf("mouse movie pos(%d,%d)\n", event.button.x, event.button.y);
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break;
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case FF_QUIT_EVENT:
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printf("receive quit event\n");
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b_exit = 1;
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break;
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default:
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break;
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}
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if (b_exit)
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break;
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}
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if (renderer)
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SDL_DestroyRenderer(renderer);
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if (window)
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SDL_DestroyWindow(window);
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SDL_Quit();
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return 0;
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}
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