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title: "bindable | Microsoft Docs"
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---
# bindable
Indicates that the property supports data binding.  
  
## Syntax  
  
```  
  
[bindable]  
  
```  
  
## Remarks  
 The **bindable** C++ attribute has the same functionality as the [bindable](http://msdn.microsoft.com/library/windows/desktop/aa366738) MIDL attribute. You can use it on properties defined with the [propget](../windows/propget.md), [propput](../windows/propput.md), or [propputref](../windows/propputref.md) attributes, or you can manually define a bindable method.  
  
 The following MFC samples show the use of **bindable**:  
  
-   [Controls Samples: MFC-Based ActiveX Controls](http://msdn.microsoft.com/en-us/a44adf86-0ba0-4504-bedb-512b6cba2e63)  
  
-   [CIRC Sample: ActiveX Control](http://msdn.microsoft.com/en-us/9ba34d04-280e-49f4-90ae-41a6be44c95b)  
  
-   [TESTHELP Sample: ActiveX Control with Tooltips and Help](http://msdn.microsoft.com/en-us/d822861d-c6f0-4d0a-ad11-970eebb1e8cd)  
  
## Example  
 The following code shows how you can use **bindable** on a property:  
  
```  
// cpp_attr_ref_bindable.cpp  
// compile with: /LD  
#include <windows.h>  
[  
   uuid("479B29E3-9A2C-11D0-B696-00A0C903487A"),  
   dispinterface,  
   helpstring("property demo Interface")  
]  
__interface IPropDemo : IDispatch {  
  
   [propget, id(1), bindable, displaybind, defaultbind, requestedit] HRESULT P1([out, retval] long *nSize);  
   [propput, id(1), bindable, displaybind, defaultbind, requestedit] HRESULT P1([in] long nSize);  
   [id(3), bindable, propget] HRESULT Object([out, retval] IDispatch **ppObj);  
   [id(3), bindable, propputref] HRESULT Object([in] IDispatch* pObj);     
   [id(-552), helpstring("method AboutBox")] HRESULT AboutBox();  
};  
  
[ module(name="PropDemoLib", uuid="479B29E2-9A2C-11D0-B696-00A0C903487A", version="1.0", helpstring="property demo") ];  
```  
  
## Requirements  
  
### Attribute Context  
  
|||  
|-|-|  
|**Applies to**|Interface method|  
|**Repeatable**|No|  
|**Required attributes**|None|  
|**Invalid attributes**|None|  
  
 For more information about the attribute contexts, see [Attribute Contexts](../windows/attribute-contexts.md).  
  
## See Also  
 [IDL Attributes](../windows/idl-attributes.md)   
 [Method Attributes](../windows/method-attributes.md)   
 [defaultbind](../windows/defaultbind.md)   
 [displaybind](../windows/displaybind.md)   
 [immediatebind](../windows/immediatebind.md)   
 [requestedit](../windows/requestedit.md)