fix a buffer overflow

[libpicofe.git] / linux / xenv.h

diff --git a/linux/xenv.h b/linux/xenv.h
index 005ec0a..ae76f7d 100644 (file)
--- a/linux/xenv.h
+++ b/linux/xenv.h
@@ -1,9 +1,11 @@
+#ifndef LIBPICOFE_XENV_H
+#define LIBPICOFE_XENV_H
 
 #define XENV_CAP_KEYS  (1<<0)
 #define XENV_CAP_MOUSE (1<<1)
 
 /* xenv_flags specify if we need keys and mouse,
- * flag is removed if input is not available */
+ * on return, flag is removed if input is not available */
 int  xenv_init(int *xenv_flags, const char *window_title);
 
 /* read events from X, calling key_cb for key, mouseb_cb for mouse button
@@ -16,3 +18,4 @@ int  xenv_update(int (*key_cb)(void *cb_arg, int kc, int is_pressed),
 int  xenv_minimize(void);
 void xenv_finish(void);
 
+#endif // LIBPICOFE_XENV_H