[Overview][Constants][Types][Classes][Procedures and functions][Variables][Index] | Reference for unit 'sysutils' (#rtl)

# Supports

Check whether a class or given interface supports an interface

## Declaration

Source position: intfh.inc line 18

`function Supports(`
`const Instance: IInterface;`
`const AClass: TClass;`
`out Obj`
`):Boolean; overload; function Supports(`
`const Instance: IInterface;`
`const IID: TGUID;`
`out Intf`
`):Boolean; overload; function Supports(`
`const Instance: TObject;`
`const IID: TGUID;`
`out Intf`
`):Boolean; overload; function Supports(`
`const Instance: TObject;`
`const IID: Shortstring;`
`out Intf`
`):Boolean; overload; function Supports(`
`const Instance: IInterface;`
`const AClass: TClass`
`):Boolean; overload; function Supports(`
`const Instance: IInterface;`
`const IID: TGUID`
`):Boolean; overload; function Supports(`
`const Instance: TObject;`
`const IID: TGUID`
`):Boolean; overload; function Supports(`
`const Instance: TObject;`
`const IID: Shortstring`
`):Boolean; overload; function Supports(`
`const AClass: TClass;`
`const IID: TGUID`
`):Boolean; overload; function Supports(`
`const AClass: TClass;`
`const IID: Shortstring`
`):Boolean; overload;`

## Description

Supports checks whether Instance supports the interface identified by IID. It returns True if it is supported, False. Optionally, a pointer to the interface is returned to Intf.

## Errors

None.

## See also

StringToGUID |  | Convert a string to a native TGUID type.