CMFCTabCtrl::OnDragEnter

Called by the framework during a drag-and-drop operation when the cursor first enters the window of the current tab control.

virtual DROPEFFECT OnDragEnter(
   COleDataObject* pDataObject,
   DWORD dwKeyState,
   CPoint point
);

Parameters

[in] pDataObject
Points to a data object that contains data that the user drags.
[in] dwKeyState
Contains the state of the modifier keys. This parameter is a bitwise combination (OR) of the following values: MK_CONTROL, MK_SHIFT, MK_ALT, MK_LBUTTON, MK_MBUTTON, and MK_RBUTTON. For more information, see the Message Parameters section of About Mouse Input.
[in] point
Contains the current location of the cursor in client coordinates.

Always DROPEFFECT_NONE, which means that the drop target cannot accept the data. For more information, see the DROPEFFECT enumeration.

Use this method to support a drag-and-drop operation. Override this method to implement your own custom behavior.

By default, this method only calls CMFCTabCtrl::OnDragOver, which always returns DROPEFFECT_NONE.

Header: afxtabctrl.h