From d79ca9b0b682681698ac12132d2c87673b986552 Mon Sep 17 00:00:00 2001
From: ocornut <omarcornut@gmail.com>
Date: Mon, 23 Aug 2021 14:57:23 +0200
Subject: [PATCH] Fixed nested BeginDisabled()/EndDisabled() calls. (#211,
 #4452, #4453, #4462) [Legulysse]

---
 docs/CHANGELOG.txt | 13 ++++++++++---
 imgui.cpp          |  6 ++++--
 imgui.h            |  4 ++--
 3 files changed, 16 insertions(+), 7 deletions(-)

diff --git a/docs/CHANGELOG.txt b/docs/CHANGELOG.txt
index f4d4a4476..951f3f643 100644
--- a/docs/CHANGELOG.txt
+++ b/docs/CHANGELOG.txt
@@ -31,15 +31,22 @@ HOW TO UPDATE?
 - Please report any issue!
 
 
+-----------------------------------------------------------------------
+ VERSION 1.84.2 (Released 2021-08-23)
+-----------------------------------------------------------------------
+
+Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.84.2
+
+- Disabled: Fixed nested BeginDisabled()/EndDisabled() calls. (#211, #4452, #4453, #4462) [@Legulysse]
+
+
 -----------------------------------------------------------------------
  VERSION 1.84.1 (Released 2021-08-20)
 -----------------------------------------------------------------------
 
 Decorated log: https://github.com/ocornut/imgui/releases/tag/v1.84.1
 
-Other Changes:
-
-- Fixed BeginDisabled(false) - BeginDisabled(true) was working. (#211, #4452, #4453)
+- Disabled: Fixed BeginDisabled(false) - BeginDisabled(true) was working. (#211, #4452, #4453)
 
 
 -----------------------------------------------------------------------
diff --git a/imgui.cpp b/imgui.cpp
index 9139afeef..ab27f1307 100644
--- a/imgui.cpp
+++ b/imgui.cpp
@@ -6627,9 +6627,11 @@ void ImGui::BeginDisabled(bool disabled)
 {
     ImGuiContext& g = *GImGui;
     bool was_disabled = (g.CurrentItemFlags & ImGuiItemFlags_Disabled) != 0;
-    g.DisabledAlphaBackup = g.Style.Alpha;
     if (!was_disabled && disabled)
+    {
+        g.DisabledAlphaBackup = g.Style.Alpha;
         g.Style.Alpha *= g.Style.DisabledAlpha; // PushStyleVar(ImGuiStyleVar_Alpha, g.Style.Alpha * g.Style.DisabledAlpha);
+    }
     if (was_disabled || disabled)
         g.CurrentItemFlags |= ImGuiItemFlags_Disabled;
     g.ItemFlagsStack.push_back(g.CurrentItemFlags);
@@ -6641,7 +6643,7 @@ void ImGui::EndDisabled()
     bool was_disabled = (g.CurrentItemFlags & ImGuiItemFlags_Disabled) != 0;
     //PopItemFlag();
     g.ItemFlagsStack.pop_back();
-    g.CurrentItemFlags &= ~ImGuiItemFlags_Disabled;
+    g.CurrentItemFlags = g.ItemFlagsStack.back();
     if (was_disabled && (g.CurrentItemFlags & ImGuiItemFlags_Disabled) == 0)
         g.Style.Alpha = g.DisabledAlphaBackup; //PopStyleVar();
 }
diff --git a/imgui.h b/imgui.h
index c6132abe8..b56cb8524 100644
--- a/imgui.h
+++ b/imgui.h
@@ -60,8 +60,8 @@ Index of this file:
 
 // Version
 // (Integer encoded as XYYZZ for use in #if preprocessor conditionals. Work in progress versions typically starts at XYY99 then bounce up to XYY00, XYY01 etc. when release tagging happens)
-#define IMGUI_VERSION               "1.84.1"
-#define IMGUI_VERSION_NUM           18404
+#define IMGUI_VERSION               "1.84.2"
+#define IMGUI_VERSION_NUM           18405
 #define IMGUI_CHECKVERSION()        ImGui::DebugCheckVersionAndDataLayout(IMGUI_VERSION, sizeof(ImGuiIO), sizeof(ImGuiStyle), sizeof(ImVec2), sizeof(ImVec4), sizeof(ImDrawVert), sizeof(ImDrawIdx))
 #define IMGUI_HAS_TABLE