Applet does not load in IE when hosted in form via SHDocVw.dll

Question

Hi
I have a signed applet that usually works well in IE and Mozilla FireFox.
It shows a popup window with the security question Yes/No/Always and works great thereafter.
However
We have now developed a Vb.Net application which hosts the SHDocVw.dll and now when for example I navigate to the web page within this embedded browser control from Microsoft the applet does not load and the popup window does not appear, when trying to access it via clientside scriptring it does not find the applet object.
// this fails when called from embedded browser control
<script>
document.applets[0].prepareControl();
</script>
Please help me I would really like to get the applet to work when using this new vb.net application with the embedded browser control because it is becoming our company's standard to hos apps in this new app and not open a new instance of IE for each application.
Thanks
Ian Coetzer

Answer 1

What does the trace say?
To turn the full trace on (windows) you can start the java console, to be found here:
C:\Program Files\Java\j2re1.4...\bin\jpicpl32.exe
In the advanced tab you can fill in something for runtime parameters fill in this:
-Djavaplugin.trace=true -Djavaplugin.trace.option=basic|net|security|ext|liveconnect
if you cannot start the java console check here:
C:\Documents and Settings\userName\Application Data\Sun\Java\Deployment\deployment.properties
I think for linux this is somewhere in youruserdir/java (hidden directory)
add or change the following line:
javaplugin.jre.params=-Djavaplugin.trace\=true -Djavaplugin.trace.option\=basic|net|security|ext|liveconnect
for 1.5:
deployment.javapi.jre.1.5.0.args=-Djavaplugin.trace\=true -Djavaplugin.trace.option\=basic|net|security|ext|liveconnect
The trace is here:
C:\Documents and Settings\your user\Application Data\Sun\Java\Deployment\log\plugin...log
I think for linux this is somewhere in youruserdir/java (hidden directory)
Print out the full trace of the exception:
try{...}catch(Exception e){e.printStackTrace();}
If no trace is created my guess is that the jre is never started, try the <object tag
instead for your applet (html page) because your browser tries to run the applet with msjvm.