Name 

Description 

 

_AddRef 

Responds when the caller acquires a reference to this object's interface. 

 

_Release 

Responds when the caller releases a reference to this object's interface. 

 

DispInvoke 

Invokes a method call when the System::Variant supports such operations. 

 

LeftPromotion 

Indicates whether the left argument to a binary operation should be coerced to a different type. 

 

OlePromotion 

Indicates the type to which a System::Variant value must be cast to make it Automation-compatible. 

 

QueryInterface 

Returns a reference to a specified interface if the object supports that interface. 

 

RaiseCastError 

Generates a system error that indicates an invalid cast. 

 

RaiseDispError 

Generates a system error indicating an invalid dispatch attempt. 

 

RaiseInvalidOp 

Generates a system error indicating an invalid operation. 

 

RightPromotion 

Indicates whether the right argument to a binary operation should be coerced to a different type. 

 

SimplisticClear 

Clears a TVarData record by re-initializing it. 

 

SimplisticCopy 

Performs a simple block copy of one TVarData record to another. 

 

VarDataCast 

Performs a cast from one System::Variant type to another. 

 

VarDataCastTo 

This is the overview for the VarDataCastTo method overload. 

 

VarDataCastToOleStr 

Performs a cast to a System::Variant type of varOleStr. 

 

VarDataClear 

Clears the data from a built-in System::Variant type. 

 

VarDataCopy 

Copies the data from one built-in System::Variant type to another. 

 

VarDataCopyNoInd 

Copies the data from one built-in System::Variant type to another. 

 

VarDataFromOleStr 

Creates a TVarData record to represent a Unicode string. 

 

VarDataFromStr 

Creates a TVarData record to represent a string. 

 

VarDataInit 

Initializes a TVarData record. 

 

VarDataIsArray 

Indicates whether a TVarData record represents the data from a System::Variant array. 

 

VarDataIsByRef 

Indicates whether a TVarData record stores its data indirectly. 

 

VarDataIsEmptyParam 

Indicates whether a TVarData record represents an unassigned optional parameter. 

 

VarDataIsFloat 

Indicates whether a TVarData record represents a floating-point value. 

 

VarDataIsNumeric 

Indicates whether a TVarData record represents a numeric value. 

 

VarDataIsOrdinal 

Indicates whether a TVarData record represents a ordinal value. 

 

VarDataIsStr 

Indicates whether a TVarData record represents a string (normal or Unicode). 

 

VarDataToStr 

Returns a string that represents the value from a TVarData record. 

 

Name 

Description 

 

BinaryOp 

Implements any binary operations of which the custom System::Variant type is capable. 

 

Cast 

Converts the data from another System::Variant type so that it represents this custom type's data format. 

 

CastTo 

Converts data in the format of this TCustomVariantType to the format of another System::Variant type. 

 

CastToOle 

Converts data in the format of this custom System::Variant type to a format that can be used by COM Variants. 

 

Clear 

Sets the data for this custom System::Variant type to a blank or unassigned value. 

 

Compare 

Implements comparisons that involve the custom System::Variant type. 

 

CompareOp 

Implements any comparison operations of which the custom System::Variant type is capable. 

 

Copy 

Copies the data from a System::Variant of this custom type. 

 

IsClear 

Indicates whether the data from a custom System::Variant represents a blank or unassigned value. 

 

UnaryOp 

Implements any unary operations of which the custom System::Variant type is capable.