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Specifies the event handler signalled to get the class type for a new section on a THeaderControl instance.
Source position: comctrls.pp line 4001
type TCustomHCCreateSectionClassEvent = procedure( |
Sender: TCustomHeaderControl; |
var SectionClass: THeaderSectionClass |
) of object; |
Sender |
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Object (TCustomHeaderControl) for the event notification. |
SectionClass |
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Returns the class type used to create a new section on a THeaderControl. |
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.
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Implements a collection for sections in a TCustomHeaderControl control. |
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Creates a new header section and adds it to the collection. |
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Adds the specified header section at the position specified in Index. |
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Event handler signalled to get the class type used to create a new section for the header control. |
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Sections - the short segments of the header separated by vertical bars that function as the elementary selection units of the header. |
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Creates a new header section for the control. |
| Version 3.2 | Generated 2024-02-25 | Home |