Name: dsR10078 Date: 03/20/2001



Image data cannot be transferred via the system clipboard or DnD on
Win9X/ME.
The bug is reproducible on merlin build b55.
Here is the test case which reproduces the problem for the clipboard:
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import java.awt.*;
import java.awt.datatransfer.*;

public class SimpleTest implements Transferable {

    final Toolkit toolkit = Toolkit.getDefaultToolkit();
    final Clipboard clipboard = toolkit.getSystemClipboard();
    Image image = null;

    public static void main(String[] args) {
        if (args.length == 0) {
            System.out.println("No image loaded. To load an image:");
            System.out.println(" java ClipboardTest <image file>");
        }
        SimpleTest test = new SimpleTest(args.length > 0 ? args[0] :
null);
    }

    public SimpleTest(String imageName) {
        if (imageName != null) {
            image = toolkit.createImage(imageName);
        }

        clipboard.setContents(this, null);
    }

    public DataFlavor[] getTransferDataFlavors() {
        return new DataFlavor[] { DataFlavor.imageFlavor };
    }

    public boolean isDataFlavorSupported(DataFlavor flavor) {
        return DataFlavor.imageFlavor.equals(flavor);
    }

    public Object getTransferData(DataFlavor flavor)
      throws UnsupportedFlavorException {
        if (!isDataFlavorSupported(flavor)) {
            throw new UnsupportedFlavorException(flavor);
        }

        System.err.println("getTransferData image=" + image);
        return image;
    }
}
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On Win9X/ME this test throws an exception:

getTransferData image=sun.awt.windows.WImage@4741d6
Exception in thread "main" java.lang.NullPointerException
        at java.io.OutputStream.write(OutputStream.java:61)
        at
sun.awt.datatransfer.DataTransferer.translateTransferable(DataTransferer.java:926)
        at
sun.awt.windows.WDataTransferer.translateTransferable(WDataTransferer.java:129)
        at sun.awt.windows.WClipboard.setContents(WClipboard.java:78)
        at SimpleTest.<init>(SimpleTest.java:23)
        at SimpleTest.main(SimpleTest.java:15)

The test works on WinNT.

###@###.### 2001-03-20
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