From 6def01be5df16e17d71f81a8d4083a0f48d04a8d Mon Sep 17 00:00:00 2001
From: ocornut <omarcornut@gmail.com>
Date: Sun, 25 Sep 2016 14:32:38 +0200
Subject: [PATCH] Fixed IsItemActive() lagging by one frame on initial widget
 activation (#840)

---
 imgui.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/imgui.cpp b/imgui.cpp
index afd58724..c33efc98 100644
--- a/imgui.cpp
+++ b/imgui.cpp
@@ -1828,6 +1828,8 @@ void ImGui::SetActiveID(ImGuiID id, ImGuiWindow* window = NULL)
     g.ActiveId = id;
     g.ActiveIdAllowOverlap = false;
     g.ActiveIdIsJustActivated = true;
+    if (id)
+        g.ActiveIdIsAlive = true;
     g.ActiveIdWindow = window;
 }