HDN_BEGINDRAG

This notification message is sent by a header control when a drag operation has begun on one of its items. It is sent only by header controls set to the HDS_DRAGDROP style, and is sent as a WM_NOTIFY message.

HDN_BEGINDRAG pNMHeader = (LPNMHEADER) lParam;

Parameters

  • pNMHeader
    Pointer to an NMHEADER structure that contains data about the header item dragged

Return Values

To enable the header control to automatically manage drag-and-drop operations, return FALSE. If the owner of the control is manually performing drag-and-drop reordering, return TRUE.

Remarks

A header control defaults to automatically managing drag-and-drop reordering. Returning TRUE to indicate external (manual) drag-and-drop management enables the owner of the control to provide custom services as part of the drag-and-drop process.

Requirements

Runs on Versions Defined in Include Link to
Windows CE OS 2.0 and later Commctrl.h    

Note   This API is part of the complete Windows CE OS package as provided by Microsoft. The functionality of a particular platform is determined by the original equipment manufacturer (OEM) and some devices may not support this API.

See Also

WM_NOTIFY, NMHEADER

 Last updated on Tuesday, July 13, 2004

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