HDN_GETDISPINFOHDN_GETDISPINFO*
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HDN_GETDISPINFO


HDN_GETDISPINFO
   pDispInfo = (LPNMHDDISPINFO) lParam;

Sent to the owner of a header control when the control needs information about a callback header item. This notification is sent as a WM_NOTIFY message.

pDispInfo
Address of an NMHDDISPINFO structure. On input, the fields of the structure specify what information is required and the item of interest.

Fill the appropriate members of the structure to return the requested information to the header control. If your message handler sets the mask member of the NMHDDISPINFO structure to HDI_DI_SETITEM, the header control stores the information and will not request it again.

Version 4.70

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