INameSpaceTreeControlDropHandler::OnDragEnter method
Called on drag enter to set drag effect, as specified.
Syntax
HRESULT OnDragEnter( [in] IShellItem *psiOver, [in] IShellItemArray *psiaData, [in] BOOL fOutsideSource, [in] DWORD grfKeyState, [in, out] DWORD *pdwEffect );
Parameters
- psiOver [in]
-
Type: IShellItem*
A pointer to an IShellItem interface representing the item underneath the mouse cursor. Optional.
- psiaData [in]
-
Type: IShellItemArray*
A pointer to an IShellItem array containing the items being dragged.
- fOutsideSource [in]
-
Type: BOOL
Specifies whether drag started outside target area.
- grfKeyState [in]
-
Type: DWORD
The current state of keyboard modifier keys.
- pdwEffect [in, out]
-
Type: DWORD*
On success, contains a pointer to the drag effect value.
Return value
Type: HRESULT
If this method succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.
Remarks
Failing this method blocks the drag operation in the namespace tree control (NSTC).
Requirements
|
Minimum supported client |
Windows Vista [desktop apps only] |
|---|---|
|
Minimum supported server |
Windows Server 2008 [desktop apps only] |
|
Header |
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|
IDL |
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See also