Name: dsR10051 Date: 06/05/2000



The method java.awt.Toolkit.createCustomCursor(Image cursor, Point hotSpot, String name)
hangs the VM under Windows NT if cursor is multi-frame image.

Here is a minimized test:

import java.io.*;
import java.awt.*;
import java.awt.image.*;

public class TestToolkit {
        public static void main(String[] args) {
            try {
                Toolkit tk = Toolkit.getDefaultToolkit();
                String file = "file:///" + args[0] + "/31kb.gif";
                System.out.println("File: " + file);
                Image im = tk.getImage(new java.net.URL(file));
                Canvas c = new Canvas();
                if(!tk.prepareImage(im, -1, -1, c)) {
                        while((tk.checkImage(im, -1, -1,c) &
                                (ImageObserver.FRAMEBITS |
                                ImageObserver.ALLBITS)) == 0) {
                            Thread.yield();
                        }
                }
                System.out.println(tk.checkImage(im, -1, -1,c));
                Point p = new Point(0,0);
                System.out.println("Custom cursor creating");
                Cursor cur = tk.createCustomCursor(im, p, "Test");
                System.out.println("Custom cursor is successfully created");

                
                System.exit(0);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
}

Multi-frame image "31kb.gif" is attached.

--- Output ---
F:\NightlyNT\BIN\Tests>f:\NightlyNT\java\jdk1.3\win32\bin\java -version
java version "1.3.0"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.0-C)
Java HotSpot(TM) Client VM (build 1.3.0-C, mixed mode)

F:\NightlyNT\BIN\Tests>f:\NightlyNT\java\jdk1.3\win32\bin\java -classpath . TestToolkit f:/NightlyNT/BIN/Tests
File: file:///f:/NightlyNT/BIN/Tests/31kb.gif
23
Custom cursor creating
^C

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