Showing the Drop Location

Generally during a drag operation, a component gives visual feedback when it can accept the data. It might highlight the drop location, or it might show a caret or a horizontal line where the insertion would occur. Swing renders the drop location when the canImport method for the component's TransferHandler returns true.

To control this programmatically, you can use the setShowDropLocation method. Calling this method with true causes the visual feedback for the drop location to always be displayed, even if the drop will not be accepted. Calling this method with false prevents any visual feedback, even if the drop will be accepted. You always invoke this method from canImport.

-- Sharon Zakhour

Posted at 11:12AM Oct 18, 2007 by The Java Tutorial Team  |  Comments[0]