From f1f4d68f7f1c4dc8cba8f9f22c7c85c90951ab0e Mon Sep 17 00:00:00 2001
From: ocornut <omarcornut@gmail.com>
Date: Mon, 10 Aug 2015 10:26:39 -0600
Subject: [PATCH] Prevent imgui_internal.h from being included without imgui.h
 (piles of errors)

---
 imgui_internal.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/imgui_internal.h b/imgui_internal.h
index 3df23dad..8512a635 100644
--- a/imgui_internal.h
+++ b/imgui_internal.h
@@ -7,6 +7,10 @@
 
 #pragma once
 
+#ifndef IMGUI_VERSION
+#error Must include imgui.h before imgui_internal.h
+#endif
+
 #include <stdio.h>      // FILE*
 #include <math.h>       // sqrtf()