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TCustomVariantType.CastToOle Method
TCustomVariantType Class | TCustomVariantType Members | Variants Namespace | Description | See Also
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Converts data in the format of this custom System::Variant type to a format that can be used by COM Variants.

Pascal
procedure CastToOle(var Dest: TVarData; const Source: TVarData); virtual;
C++
virtual __fastcall CastToOle(TVarData Dest, const TVarData Source);
Description

Override CastToOle to change the way this custom type is converted for use in COM interface calls. CastToOle converts this custom System::Variant type to the closest Automation-compatible System::Variant type. 

Dest is a TVarData record that returns the System::Variant's data stored in an Automation-compatible format. 

Source is a TVarData record that represents the data from a System::Variant of this custom type. 

As implemented in TCustomVariantType, CastToOle calls the OlePromotion method to determine the Automation-compatible type to which Source should be converted. It then calls the CastTo method to perform the actual conversion. 

 

See Also
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