From 123de14d4398f27977e62a7f3ede2fa3574f30fa Mon Sep 17 00:00:00 2001
From: Han Zhang <zhangh@microsoft.com>
Date: Mon, 15 Aug 2022 10:57:13 +0800
Subject: [PATCH] Check whether graphing API is supported

---
 src/CalcViewModel/Common/NavCategory.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/CalcViewModel/Common/NavCategory.cpp b/src/CalcViewModel/Common/NavCategory.cpp
index 829f7488..90307f7d 100644
--- a/src/CalcViewModel/Common/NavCategory.cpp
+++ b/src/CalcViewModel/Common/NavCategory.cpp
@@ -54,6 +54,12 @@ namespace // put the utils within this TU
 
     bool IsGraphingModeEnabled()
     {
+        static bool isGraphSupported = Windows::Foundation::Metadata::ApiInformation::IsMethodPresent("Windows.UI.Text.RichEditTextDocument", "GetMath");
+        if (!isGraphSupported)
+        {
+            return false;
+        }
+
         static bool isChecked = false;
         static bool isEnabled = false;