检测显示器信息

src/include/utils.h

@@ -0,0 +1,8 @@
+#pragma once
+
+#include <stddef.h>
+
+#define LENGTH(X) (sizeof(X) / sizeof(X)[0])
+
+void die(const char *format, ...);
+void *ecalloc(size_t number_of_member, size_t member_size);