From f88bf9cea35a3ac3b93c51526f03a058c822a991 Mon Sep 17 00:00:00 2001
From: omar <omarcornut@gmail.com>
Date: Mon, 30 Jul 2018 18:48:10 +0200
Subject: [PATCH] InvisibleButton: Added an assert to catch common type of
 passing zero-sized dimensions. (#1983)

---
 imgui.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/imgui.cpp b/imgui.cpp
index d7db96bb..594d5fec 100644
--- a/imgui.cpp
+++ b/imgui.cpp
@@ -8332,6 +8332,9 @@ bool ImGui::InvisibleButton(const char* str_id, const ImVec2& size_arg)
     if (window->SkipItems)
         return false;
 
+    // Cannot use zero-size for InvisibleButton(). Unlike Button() there is not way to fallback using the label size.
+    IM_ASSERT(size_arg.x != 0.0f && size_arg.y != 0.0f);
+
     const ImGuiID id = window->GetID(str_id);
     ImVec2 size = CalcItemSize(size_arg, 0.0f, 0.0f);
     const ImRect bb(window->DC.CursorPos, window->DC.CursorPos + size);