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What Is The FreeNotification Method In DelphiVCL?

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Use the FreeNotification method or DelphiVCL.Application.FreeNotification to ensure that AComponent is notified that the component is going to be destroyed.

Use FreeNotification to register AComponent as a component that should be notified when the component is about to be destroyed. It is only necessary to register components this way when they are in a different form or have a different owner. For example, if AComponent is in another form and uses the component to implement a property, it must call FreeNotification so that its Notification method is called when the component is destroyed.

For components with the same owner, the Notification method is called automatically when an application explicitly frees the component. This notification is not sent out when components are freed implicitly, because the Owner is already being freed.

How to examine the properties and methods of the DelphiVCL.Application.FreeNotification?

Let’s browse all the properties, methods, and built-in properties of the DelphiVCL.Application.FreeNotification using dir() command:

See the responses in our Windows command prompt:

What Is The FreeNotification Method in DelphiVCL.Application? screen 1

You can also read short information about the DelphiVCL.Application.FreeNotification using the print() command:

See the responses in our Windows command prompt:

What Is The FreeNotification Method in DelphiVCL.Application? 2

 

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