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Important This document may not represent best practices for current development, links to downloads and other resources may no longer be valid. Current recommended version can be found here.

CHandle Class 

This class provides methods for creating and using a handle object.

class CHandle

A CHandle object can be used whenever a handle is required: the main difference is that the CHandle object will automatically be deleted.


Some API functions will use NULL as an empty or invalid handle, while others use INVALID_HANDLE_VALUE. CHandle only uses NULL and will treat INVALID_HANDLE_VALUE as a real handle. If you call an API which can return INVALID_HANDLE_VALUE, you should check for this value before calling CHandle::Attach or passing it to the CHandle constructor, and instead pass NULL.

Header: atlbase.h

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