What is the main function of VARIANT data type?

星语空翼

What is the main function of the VARIANT data type?
Seen in MSDN: Variant serves as the universal data type. This means that you can store data of any type in a variable of type Variant.

I don't feel very clear, please help explain it in detail, thank you.

zjzhizi

Com uses more of this type. This data type can represent multiple data types, such as
int, uint, etc., there is a VARTYPE to indicate which data type, and then according to the data type
Then get the corresponding data (long-VARIANT.lVal, BYTE-VARIANT.bVal)

rsq666

Is a data structure, the inner members are a variety of data types, mainly used for database interfaces.

mowenjx

It is a common data type in window software system. It is mainly used to provide a common between static data type programming languages ​​such as c / c ++, vc and dynamic data type languages ​​such as vb, etc. during automation (COM) programming Data types to solve the problem of data exchange between languages. VARIANT is a self-describing data type