Canvas object array displays image & text in AppletViewer not IE,Netscape
Hi all,
I have an pure awt applet with ScrollPane. The scroll pane displays an array of SimpleCanvas objects one below another using StackLayout. SimpleCanvas extends java.awt.Canvas and can display both text and images.
This works correctly in AppletViewer (JDK1.3) But when I run this in IE 5.0 and Netscape 4.7, The text is painted but the Image is not painted.
Can any body tell me whats happening and how to fix this?
Regards,
Harsha
harshapr@comatindia.com
PS: Below is the java console message of both IE and Netscape.
<NETSCAPE 4.7 JAVA CONSOLE>
java.lang.NullPointerException
at sun.awt.windows.WToolkit.checkScrImage(Compiled Code)
at sun.awt.windows.WComponentPeer.checkImage(Compiled Code)
at java.awt.Component.checkImage(Compiled Code)
at java.awt.ImageMediaEntry.getStatus(Compiled Code)
at java.awt.MediaTracker.checkAll(Compiled Code)
at java.awt.MediaTracker.checkAll(Compiled Code)
at SimpleCanvas3.paint(Compiled Code)
at java.awt.Component.dispatchEventImpl(Compiled Code)
* at java.awt.Component.dispatchEvent(Compiled Code)
at java.awt.EventDispatchThread$EventPump.dispatchEvents(Compiled Code)
at java.awt.EventDispatchThread.run(Compiled Code)
at netscape.applet.DerivedAppletFrame$AppletEventDispatchThread.run(Compiled Code)
</NETSCAPE 4.7 JAVA CONSOLE>
<IE 5.0 JAVA CONSOLE>
java.lang.NullPointerException
at com/ms/awt/WToolkit.checkScrImage
at com/ms/awt/WComponentPeer.checkImage
at java/awt/Component.checkImage
at java/awt/ImageMediaEntry.getStatus
at java/awt/MediaTracker.checkAll
at java/awt/MediaTracker.checkAll
at SimpleCanvas3.paint
at SimpleCanvas3.update
at com/ms/awt/WComponentPeer.doUpdate
at com/ms/awt/WComponentPeer.doUpdate
at com/ms/awt/WUpdate.run
at com/ms/ui/windowmanager/RunnableMessage.run
at com/ms/awt/WSystemQueue.getMessage
at com/ms/awt/WEventQueue.getNextEvent
at java/awt/EventDispatchThread.run
</IE 5.0 JAVA CONSOLE>
