IDropTargetHelper::DragEnter method (shobjidl_core.h)

Notifies the drag-image manager that the drop target's IDropTarget::DragEnter method has been called.

Syntax

HRESULT DragEnter(
  [in] HWND        hwndTarget,
  [in] IDataObject *pDataObject,
  [in] POINT       *ppt,
  [in] DWORD       dwEffect
);

Parameters

[in] hwndTarget

Type: HWND

The target's window handle.

[in] pDataObject

Type: IDataObject*

A pointer to the data object's IDataObject interface.

[in] ppt

Type: POINT*

The POINT structure pointer that was received in the IDropTarget::DragEnter method's pt parameter.

[in] dwEffect

Type: DWORD

The value pointed to by the IDropTarget::DragEnter method's pdwEffect parameter.

Return value

Type: HRESULT

Returns S_OK if successful, or a COM error value otherwise.

Remarks

This method is called by a drop target when its IDropTarget::DragEnter method is called. It notifies the drag-image manager that the drop target has been entered, and provides it with the information needed to display the drag image.

Requirements

See also

IDropTargetHelper