Mastering Blockchain Programming with Solidity

The ApprovalForAll event

The ApprovalForAll event is triggered when an owner gives or changes approval for all of their NFTs to an operator.

The event takes three arguments:

• owner: This is the address of the owner who is giving approval to an operator.
• operator: This is the address of the operator who will receive full rights for the owner's tokens.
• approved: This is a Boolean value representing that approval is given or revoked. When the event parameter is true, the operator receives the approval; when it is false, the approval is revoked.

Let's look at the ApprovalForAll event definition code:

event ApprovalForAll(address indexed owner, address indexed operator, bool approved);

The ApprovalForAll event is triggered only from the setApprovalForAll ...