From Xojo Documentation

Class (inherits from Object)

New in 2019r2

Used when callings declares that require Obj-C blocks. An ObjCBlock is created from a Delegate and in turn creates an Objective-C block that will call into the delegate. This Objective-C block is retrieved from the Handle property and passed into declares.

Handle fa-lock-32.png

Constructor(theDelegate As Object)

See Also

Declare command, Ptr data type