Menu bar in an applet - possible?

[Michael Davis]

Hi all,

I'm still pretty much a newbie.
I'm working with jdk 1.1.4.

I've written a java application which has a menu bar.
It works fine.

Now I'd like to turn it into an applet. I can't see
a way to add the menu bar. In my application version,
my main 'window' inherits from Frame, which has
the setMenuBar() function. Frame implements the
MenuContainer interface.

When I rewrote it as an applet, I derived from Applet which
does not implemente the MenuContainer interface, and has
no setMenuBar() function.

Do I need to implement the MenuContainer interface myself?
If so, how would I go about writing the functions it implements?

Font getFont() - I can figure this one out
boolean postEvent( Event evt ) - ???
void remove( MenuComponent comp ) - ???

Please reply to
mdavis at multipath dot com
as well as to this newsgroup, if you would be so kind, because
my news service loses half the postings before I can read them.

Many thanks,

Michael

--
// Michael Davis, Programmer/Analyst I don't speak for Multipath. //
// mda...@DELmultipath.com Nor do I speak against them. //
// Toronto The 'DEL' in my address is an anti-spam device. //

[Michael Stenzler]

You can't use the MenuBar class in the main panel of an Applet
because it can only exist for a frame and Applets are extended from
Panel. You might try creating a Frame to fill up the whole window
and work with that. I havn't tried it, so don't know if it would
work.

Good luck,

Michael Stenzler

[Tim Dean]

You need to create a new Frame, and add that frame as the only component in
your applet container. For example

public class myApplet extends Applet
{
private Frame myFrame;
public void init()
{
myFrame = new Frame("Title for myFrame");
this.add(myFrame);

// Add components of the applet to your frame
myFrame.add(new Button("Button1"));
..
}
}
Michael Davis wrote in message <6cuttg$ev5$1...@mpsrv3.multipath.com>...

[Andreas Utz]

You have to use Swing to enjoy applets with menu bars.

Use Applet.setJMenuBar(JMenuBar)

Andreas

>
> You can't use the MenuBar class in the main panel of an Applet
> because it can only exist for a frame and Applets are extended from
> Panel. You might try creating a Frame to fill up the whole window
> and work with that. I havn't tried it, so don't know if it would
> work.
>
> Good luck,
>
> Michael Stenzler
>
> Michael Davis wrote:
> >

[Michael Davis]

In article <TiFI.89$KQ2.3...@ptah.visi.com>, Tim Dean <td...@gr.com> wrote:
>You need to create a new Frame, and add that frame as the only component in
>your applet container. For example
>
>public class myApplet extends Applet
>{
> private Frame myFrame;
> public void init()
> {
> myFrame = new Frame("Title for myFrame");
> this.add(myFrame);
>
> // Add components of the applet to your frame
> myFrame.add(new Button("Button1"));
> ..
> }
>}

Thanks so much for your suggestion. Unfortunately I couldn't get it to work.
I tried the above code ( and I tried a similar thing with my app ) and both
times I got the same error. ( Here, I used the name 'tst' instead of 'myApplet' ):

java.lang.IllegalArgumentException: adding a window to a container
at java.awt.Container.addImpl(Container.java:285)
at java.awt.Container.add(Container.java:179)
at tst.init(tst.java:12)
at sun.applet.AppletPanel.run(AppletPanel.java:287)
at java.lang.Thread.run(Thread.java)

tst.java line 12 is: 'this.add(myFrame);'.

Now, interestingly enough, when I tried it with my app the first time, I left out
that line and instead had my frame class call showPanel(); which pops up my app
in a new window. This isn't what I want, I want it to be in the applet main window.

Is there something else I might try?

Cheers, MD

>Michael Davis wrote in message <6cuttg$ev5$1...@mpsrv3.multipath.com>...

[Thomas George]

Michael Davis wrote:

>
>
> Thanks so much for your suggestion. Unfortunately I couldn't get it to work.
> I tried the above code ( and I tried a similar thing with my app ) and both
> times I got the same error. ( Here, I used the name 'tst' instead of 'myApplet' ):
>
> java.lang.IllegalArgumentException: adding a window to a container
> at java.awt.Container.addImpl(Container.java:285)
> at java.awt.Container.add(Container.java:179)
> at tst.init(tst.java:12)
> at sun.applet.AppletPanel.run(AppletPanel.java:287)
> at java.lang.Thread.run(Thread.java)
>
> tst.java line 12 is: 'this.add(myFrame);'.
>

Did you run the appletviewer for testing your applet? I had the same problem. But
running the applet in the Netscape Navigator should work. (For JDK1.1 you need
netscape4.04j2 from http://developer.netscape.com.)

Thomas