Header Controls Messages (Compact 2013)

3/28/2014

The following table shows the header controls messages, with a description of the purpose of each.

Programming element	Description
HDM_CREATEDRAGIMAGE	This message creates a transparent version of an item's image within an existing header control.
HDM_DELETEITEM	This message deletes an item from a header control.
HDM_GETIMAGELIST	This message retrieves the handle to the image list that has been set for an existing header control.
HDM_GETITEM	This message retrieves data about an item in a header control.
HDM_GETITEMCOUNT	This message retrieves a count of the items in a header control.
HDM_GETITEMRECT	This message retrieves the bounding rectangle for a specified item in a header control.
HDM_GETORDERARRAY	This message retrieves the current left-to-right order of items in a header control.
HDM_HITTEST	This message tests a point to determine which header item, if any, is at the specified point.
HDM_INSERTITEM	This message inserts a new item into a header control.
HDM_LAYOUT	Retrieves the correct header control size and position within the parent window.
HDM_ORDERTOINDEX	This message retrieves an index value for an item based on its order in the header control.
HDM_SETHOTDIVIDER	This message changes the divider color between header items to indicate the destination of an external drag-and-drop operation.
HDM_SETIMAGELIST	This message assigns an image list to an existing header control.
HDM_SETITEM	This message sets the specified item attributes in a header control.
HDM_SETORDERARRAY	This message sets the left-to-right order of header items.

See Also