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title: "_variant_t Class | Microsoft Docs"
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---
# _variant_t Class
**Microsoft Specific**  
  
 A `_variant_t` object encapsulates the `VARIANT` data type. The class manages resource allocation and deallocation and makes function calls to **VariantInit** and **VariantClear** as appropriate.  
  
### Construction  
  
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|[_variant_t](../cpp/variant-t-variant-t.md)|Constructs a `_variant_t` object.|  
  
### Operations  
  
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|[Attach](../cpp/variant-t-attach.md)|Attaches a **VARIANT** object into the `_variant_t` object.|  
|[Clear](../cpp/variant-t-clear.md)|Clears the encapsulated **VARIANT** object.|  
|[ChangeType](../cpp/variant-t-changetype.md)|Changes the type of the `_variant_t` object to the indicated **VARTYPE**.|  
|[Detach](../cpp/variant-t-detach.md)|Detaches the encapsulated **VARIANT** object from this `_variant_t` object.|  
|[SetString](../cpp/variant-t-setstring.md)|Assigns a string to this `_variant_t` object.|  
  
### Operators  
  
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|[Operator =](../cpp/variant-t-operator-equal.md)|Assigns a new value to an existing `_variant_t` object.|  
|[operator ==, !=](../cpp/variant-t-relational-operators.md)|Compare two `_variant_t` objects for equality or inequality.|  
|[Extractors](../cpp/variant-t-extractors.md)|Extract data from the encapsulated **VARIANT** object.|  
  
**END Microsoft Specific**  
  
## Requirements  
 **Header:** comutil.h  
  
 **Lib:** comsuppw.lib or comsuppwd.lib (see [/Zc:wchar_t (wchar_t Is Native Type)](../build/reference/zc-wchar-t-wchar-t-is-native-type.md) for more information)  
  
## See Also  
 [Compiler COM Support Classes](../cpp/compiler-com-support-classes.md)