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Article View: borland.public.jbuilder.java.swing
Article #7800

Re: What is wrong with this code: Combo box displays incorrectly?

#7800
From: Rich Wilkman
Date: Sat, 30 Dec 2000 22:28
99 lines
4150 bytes
Reid:

The offset is probably caused by using heavyweight and lightweight
components together.  You don't post the containers (i.e., Applet of
JApplet, JComboBox, etc.).  There's a really good article on this at the
Sun site.  Used to be referenced in the hints_and_tips docs with
JBuilder back when Swing was new and folks porting over to it kept
running into problems.

-Rich

Reid wrote:
> 
> Hello James,
> 
> Thank you for responding to my post.
> 
> You have solved half of the problem!
> 
> The trailing semi colon was the reason the combo box was not being
> filled with it's values.
> 
> I still have a problem in that when the drop down list containing the
> combo box's items are displayed, the list does not display in the
> correct position.  The list displays in an offsetted way to the right
> and down approx 100-200 pixels.  This is not the effect I am looking
> for.  I of course want the list to drop down underneath the control and
> remain the same size in width.
> 
> If the applet is launched as a viewer (via F9) the drop down list
> remains directly under the control but extends out to the left and right
> of the applet's canvas and as a result it's width gets truncated.
> 
> I am coming primarily from a Delphi background and have never seen this
> type of behavior. (unless of course you are using the TCombobox as an
> OwnerDraw type and are drawing the control's canvas incorrectly)
> 
> Do you think it is related to the format of the underlying layout manager?
> 
> Any more help would be greatly appreciated!
> 
> Thanks
> 
> Reid
> 
> James A. Schulz wrote:
> 
> > Just a guess, but do you really want the semicolon after "...index++)"
> >
> > James
> >
> > "Reid" <reidr@buzybee.com> wrote in message
> > news:3A4BAE85.6010902@buzybee.com...
> >
> >> Hello,
> >>
> >> I am new to applets and am having a bit of a problem.
> >>
> >> I have the following code to populate a combo box box with strings..
> >>
> >> String [] appnames = { "Corel Clipart Locator", "Data Doctor", "Event
> >> Organizer", "HTML Developer Database",  "Image Thumbnail Viewer",
> >> "iTaxSystem", "Odyssey Warranty Tracker", "SFS Database" };
> >>
> >>  private void jbInit() throws Exception {
> >>  ...
> >>   fillAppNames();
> >>  }
> >>
> >>
> >> public void fillAppNames() {
> >>  int index;
> >>  for (index = 0; index<appnames.length; index++);
> >>   {
> >>    cbAppNames.addItem(appnames[index]);
> >>
> >>   }
> >>
> >>  }
> >>
> >> The code above compiles but when run it appears to fill the combo box
> >> with empty strings.
> >>
> >> When the box drops down it appears to have some volume but not the array
> >> contents.  It also shows the drop down an inch or two down and to the
> >> right of the actual combo box control?
> >>
> >> Can someone tell me what I am doing wrong?
> >>
> >>
> >> Any help would be greatly appreciated!
> >>
> >> Thanks
> >>
> >>
> >> Reid Roman
> >> BuzyBee Software
> >> http://www.buzybee.com
> >>
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Subject: Re: What is wrong with this code:  Combo box displays incorrectly?
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