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
Last updated on Tuesday, July 13, 2004
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