RAD Studio VCL Reference
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Classes.TOperation Enumeration

TOperation represents the types of operations whose occurrence is broadcast by the Notification method.

Pascal
TOperation = (
  opInsert,
  opRemove
);
C++
enum TOperation {
  opInsert,
  opRemove
};

The TOperation type is used in the Notification method to indicate whether the notification indicates the creation or deletion of an object. The following table gives the possible values:

Value 
Meaning 
opInsert  
The specified object has just been created.  
opRemove  
The specified object has been destroyed, and its memory is about to be freed.  

 

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