We use DelphiVCL.Application.Destroy to destroy the application instance and all of its associated memory.
Never call DelphiVCL.Application.Destroy or DelphiVCL.Application.Free. Instead, use the application’s Terminate method to end the application.
Destroy signals that the application has been deactivated before calling the inherited destructor. It then frees memory for hooked windows, the application instance, other object instances and lists that were created at application startup or that accumulated during execution
Since the Application owns all forms (usually), it destroys these forms in its destructor.
Let’s browse all the properties, methods, and built-in properties of the DelphiVCL.Application.Destroy using dir() command:
See the responses in our Windows command prompt:
Here is the working example of the implementation of DelphiVCL.Application.Destroy:
Application.Title = "MyDelphiApp"
f = MainForm(Application)