TCustomHCCreateSectionClassEvent procedure type
Specifies the event handler signalled to get the class type for a new section on a THeaderControl instance.
Declaration
TCustomHCCreateSectionClassEvent = procedure
(Sender: TCustomHeaderControl;
var SectionClass: THeaderSectionClass)
of objectArguments
Sender | Object (TCustomHeaderControl) for the event notification. |
SectionClass | Returns the class type used to create a new section on a THeaderControl. |
Description
TCustomHCCreateSectionClassEvent is an object procedure type which
specifies an event handler signalled when a new section is created for
THeaderControl. It is the type used for the OnCreateSectionClass property in
TCustomHeaderControl.
An application can implement and assign a method using the method signature to respond to the event notification. Arguments to the handler include the TCustomHeaderControl for the event notification (Sender) and the class type needed to create a new section for the control (SectionClass).
TCustomHCCreateSectionClassEvent allows a class other than THeaderSection to be used to create a section collection item. The type should, however, be a descendant of THeaderSection as it is the base type expected in the THeaderSections collection.
See also
An experiment, built from development snapshots. Not the official Free Pascal or Lazarus documentation.