The Java Developers Almanac 1.4


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Home > List of Packages > java.awt.datatransfer  [3 examples]

e639. Determining When an Item Is No Longer on the System Clipboard

When an item is set on the system clipboard, it is possible to be notified when that item is no longer on the clipboard. This is done by including a clipboard owner object when setting the item.
    // This class serves as the clipboard owner.
    class MyClipboardOwner implements ClipboardOwner {
        // This method is called when this object is no longer
        // the owner of the item on the system clipboard.
        public void lostOwnership(Clipboard clipboard, Transferable contents) {
            // To retrieve the contents, see
            // e637 Getting and Setting Text on the System Clipboard
        }
    }
Here's some code that uses the clipboard owner:
    // Create a clipboard owner
    ClipboardOwner owner = new MyClipboardOwner();
    
    // Set a string on the system clipboard and include the owner object
    StringSelection ss = new StringSelection("A String");
    Toolkit.getDefaultToolkit().getSystemClipboard().setContents(ss, owner);

 Related Examples
e637. Getting and Setting Text on the System Clipboard
e638. Getting and Setting an Image on the System Clipboard


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