Added new test to check the keyboard events

test/events-waitevent-keyboard.c

@@ -0,0 +1,93 @@
+/*
+ * events-waitevent-keyboard.c
+ *
+ * WaitEvent:
+ * Waits indefinitely for the next available event, returning 0 if there was an error
+ * while waiting for events, 1 otherwise.
+ * If event is not NULL, the next event is removed from the queue and stored in that area.
+ * As this function implicitly calls SDL_PumpEvents, you can only call this function
+ * in the thread that set the video mode.
+ */
+#include <stdio.h>
+#include <stdlib.h>
+#include <SDL/SDL.h>
+
+void print_kmod(int modifier)
+{
+   printf("LSHIFT=%d ", modifier & KMOD_LSHIFT);
+   printf("RSHIFT=%d ", modifier & KMOD_RSHIFT);
+   printf("LCTRL=%d ", modifier & KMOD_LCTRL);
+   printf("RCTRL=%d ", modifier & KMOD_RCTRL);
+   printf("LALT=%d ", modifier & KMOD_LALT);
+   printf("RALT=%d ", modifier & KMOD_RALT);
+   printf("LMETA=%d ", modifier & KMOD_LMETA);
+   printf("RMETA=%d ", modifier & KMOD_RMETA);
+   printf("NUM=%d ", modifier & KMOD_NUM);
+   printf("CAPS=%d ", modifier & KMOD_CAPS);
+   printf("MODE=%d\n", modifier & KMOD_MODE);
+}
+
+int main()
+{
+   SDL_Surface *screen;
+   SDL_Event event;
+
+   if (SDL_Init(SDL_INIT_VIDEO) != 0) {
+	  printf("Unable to initialize SDL: %s\n", SDL_GetError());
+	  return 1;
+   }
+
+   atexit(SDL_Quit);
+
+   /* Attempt to set a 256x256 hicolor (16-bit) video mode. */
+   screen = SDL_SetVideoMode(256, 256, 16, 0);
+   if (screen == NULL) {
+      printf("Unable to set video mode: %s\n", SDL_GetError());
+      return 2;
+   }
+
+   printf("Press 'Q' to quit.\n");
+
+   /* Start the event loop. Keep reading events until there
+      is an error, or the user presses a mouse button. */
+   while (SDL_WaitEvent(&event) != 0) {
+      SDL_keysym keysym;
+
+      /* SDL_WaitEvent has filled in our event structure
+         with the next event. We check its type field to
+         find out what happened. */
+      switch (event.type) {
+
+         case SDL_KEYDOWN:
+            printf("Key pressed (state = %d). ", event.key.state);
+            keysym = event.key.keysym;
+            printf("SDL keysym is %i. ", keysym.sym);
+            printf("(%s) ", SDL_GetKeyName(keysym.sym));
+
+            /* Report the left shift modifier */
+            print_kmod(event.key.keysym.mod);
+
+            /* Did the user press Q? */
+            if (keysym.sym == SDLK_q) {
+               printf("'Q' pressed, exiting.\n");
+               exit(0);
+            }
+            break;
+
+         case SDL_KEYUP:
+            printf("Key released (state = %d). ", event.key.state);
+            printf("SDL keysym is %i. ", keysym.sym);
+            printf("(%s) ", SDL_GetKeyName(keysym.sym));
+
+            print_kmod(event.key.keysym.mod);
+            break;
+
+         case SDL_QUIT:
+            printf("Quit event. Bye.\n");
+            exit(0);
+      }
+   }
+
+   return 0;
+}
+