From 3478e3a708515cf9f58f53adcee1c1bfa492f428 Mon Sep 17 00:00:00 2001
From: Jim Tilander <jim@tilander.org>
Date: Sat, 31 Jan 2015 21:55:19 -0800
Subject: [PATCH] Enabled us to create the internal state on client side
 allocated memory, e.g. a heap

---
 imgui.cpp | 10 +++++++++-
 imgui.h   |  3 ++-
 2 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/imgui.cpp b/imgui.cpp
index 01d81ec4..ec19efe8 100644
--- a/imgui.cpp
+++ b/imgui.cpp
@@ -1609,8 +1609,16 @@ void* ImGui::GetInternalState()
 	return GImGui;
 }
 
-void ImGui::SetInternalState(void* state)
+unsigned ImGui::GetInternalStateSize()
 {
+	return sizeof(ImGuiState);
+}
+
+void ImGui::SetInternalState(void* state, bool construct)
+{
+	if( construct )
+		new (state) ImGuiState;
+	
 	GImGui = (ImGuiState*)state;
 }
 
diff --git a/imgui.h b/imgui.h
index 7110bd77..4b5e0526 100644
--- a/imgui.h
+++ b/imgui.h
@@ -144,7 +144,8 @@ namespace ImGui
 {
     // Main
 	IMGUI_API void*         GetInternalState();
-	IMGUI_API void          SetInternalState(void* state);
+	IMGUI_API unsigned      GetInternalStateSize();
+	IMGUI_API void          SetInternalState(void* state, bool construct = false);
     IMGUI_API ImGuiIO&      GetIO();
     IMGUI_API ImGuiStyle&   GetStyle();
     IMGUI_API void          NewFrame();