From ffc7717149f93af32da3b1169a57281d6255decc Mon Sep 17 00:00:00 2001
From: Nick Fisher <nick.fisher@avinium.com>
Date: Wed, 28 May 2025 21:54:03 +0800
Subject: [PATCH] (web) add explicit check for failure to create context

---
 thermion_dart/native/web/src/cpp/ThermionWebApi.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/thermion_dart/native/web/src/cpp/ThermionWebApi.cpp b/thermion_dart/native/web/src/cpp/ThermionWebApi.cpp
index 6530a631..9d139410 100644
--- a/thermion_dart/native/web/src/cpp/ThermionWebApi.cpp
+++ b/thermion_dart/native/web/src/cpp/ThermionWebApi.cpp
@@ -44,6 +44,11 @@ extern "C"
     attr.majorVersion = 2;
     
     auto context = emscripten_webgl_create_context("#thermion_canvas", &attr);
+
+    if(!context) {
+      std::cout << "Failed to create WebGL context" << std::endl;  
+      return context;
+    }
     
     std::cout << "Created WebGL context " << attr.majorVersion << "." << attr.minorVersion << std::endl;