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   ► KBTo/From GuidesVB ClassicStatements  Print This     

Pointers (Cross Ref > Statements)

By Mike Prestwood

VB Classic versus C++/CLI: A side by side comparison between VB Classic and C++/CLI.

 
Data Structures
 

Data structures allow you to store and work with data. Common data structures include arrays, associative arrays, etc.

Pointers

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General Info: Pointers / References

A pointer is a variable type that allows you to refer indirectly to another object. Instead of holding data, a pointer holds the address to data -- the address of another variable or object. You can change the address value a pointer points to thus changing the variable or object the pointer is pointing to.

A reference is a type of pointer that cannot change and it must always point to a valid storage (no nulls).

VB Classic:   Not Supported

VB6 does not officially offer developer defined pointers. However, VB5 and VB6 does have unsupported and undocumented VarPtr, StrPtr, and ObjPtr types but you probably should avoid them.

[Not specified yet. Coming...]












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