Editor: Don't call Canvas.End() when Canvas.Begin() failed (#186)

Author: thedmd

docs/CHANGELOG.txt

@@ -43,6 +43,8 @@ v0.9.2 (WIP):
 
     BUGFIX: Canvas: Ensure canvas draw commands are separated from other ImGui draw commands (#205, #250)
 
+    BUGFIX: Editor: Don't call Canvas.End() when Canvas.Begin() failed (#186), thanks @pthom, @TheZoc
+
 
 v0.9.1 (2022-08-27):
 

imgui_node_editor.cpp

@@ -1137,9 +1137,9 @@ void ed::EditorContext::Begin(const char* id, const ImVec2& size)
 
     if (!m_IsInitialized)
     {
-        // Cycle canvas so it has a change to setup its size before settings are loaded
-        m_Canvas.Begin(id, canvasSize);
-        m_Canvas.End();
+        // Cycle canvas, so it has a chance to initialize its size before settings are loaded
+        if (m_Canvas.Begin(id, canvasSize))
+            m_Canvas.End();
 
         LoadSettings();
         m_IsInitialized = true;