Header Control Messages

An application sends messages to add items, to retrieve item and control properties, and to control the appearance and behavior of a header control. Most of these messages have a corresponding macro that you can use instead of sending the message explicitly.

Message	Corresponding Macro
HDM_DELETEITEM	Header_DeleteItem
HDM_GETITEM	Header_GetItem
HDM_GETITEMCOUNT	Header_GetItemCount
HDM_HITTEST
HDM_INSERTITEM	Header_InsertItem
HDM_LAYOUT	Header_Layout
HDM_SETITEM	Header_SetItem

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More information resources

MegaDetailed.Net
Unix Manual Pages
Delphi Examples