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virtual |
Called by the framework every time a grid is about to start drag-and-drop operation.
By default this function sends BCGM_GRID_BEGINDRAG message to the grid's owner window and returns FALSE if message is not handled.
Override this method in a derived class to take custom actions before drag-and-drop operation begins. Return TRUE to enable drag-and-drop.
Alternatively, you can handle the BCGM_GRID_BEGINDRAG message.
point | Specifies the x- and y-coordinate of the cursor in grid control client coordinates. |