矩形挿入モードの判定条件が間違っていたので修正した

diff --git a/Core/Controller.cs b/Core/Controller.cs
index fc34dd8..dd051eb 100644 (file)
--- a/Core/Controller.cs
+++ b/Core/Controller.cs
@@ -610,7 +610,7 @@ namespace FooEditEngine
 
         public bool IsRectInsertMode()
         {
-            if (!this.RectSelection)
+            if (!this.RectSelection || this.View.Selections.Count == 0)
                 return false;
             foreach(Selection sel in this.View.Selections)
             {