DelphiVCL

In this post, you’ll learn how to use the HelpShowTableOfContents method or DelphiVCL.Application.HelpShowTableOfContents to show the table of contents within the Help system. Use HelpShowTableOfContents to bring up the table of contents for the Help system specified in the CurrentHelpFile property. This method is preferred to calling System.HelpIntfs.ICustomHelpViewer.ShowTableOfContents…

In this post, you’ll learn how to use the GetEnumerator method or DelphiVCL.Application.GetEnumerator to return a TComponent enumerator. GetEnumerator returns a TComponentEnumerator reference, which enumerates the components contained within a specified containing component. To process all these subcomponents, call the TComponentEnumerator GetCurrent method within a While MoveNext do loop.

In this post, you’ll learn how to 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…

In this post, you’ll learn how to use the GetHashCode method or DelphiVCL.Application.GetHashCode is used to return an integer containing the hash code. By default, calling GetHashCode on an object returns an integer representing the virtual address at which the object is stored. Notes: GetHashCode is supposed to be overridden in user-derived classes, to provide consumer objects with…