---
title: "initonly (C++/CLI) | Microsoft Docs"
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ms.date: "11/04/2016"
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ms.technology: ["cpp-windows"]
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f1_keywords: ["initonly_cpp", "initonly"]
dev_langs: ["C++"]
helpviewer_keywords: ["initonly attribute [C++]"]
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---
# initonly (C++/CLI)
**initonly** is a context-sensitive keyword that indicates that variable assignment can occur only as part of the declaration or in a static constructor in the same class.  
  
 The following example shows how to use `initionly`:  
  
```  
// mcpp_initonly.cpp  
// compile with: /clr /c  
ref struct Y1 {  
   initonly  
   static int staticConst1;  
  
   initonly  
   static int staticConst2 = 0;  
  
   static Y1() {  
      staticConst1 = 0;  
   }  
};  
```  
  
## See Also  
 [Classes and Structs](../windows/classes-and-structs-cpp-component-extensions.md)