How do I display Canvas Graphic image (Not Iconic button) from jar file

Hi all,
I am currently using Forms 10g.
I have gone through the tutorials on how to add Button Icons into Jar files for web enables forms .....so far so good
This however does not explain what I actually want to do... since "graphic images are by nature embeded in the for rather than referenced ......so here goes ..
I have a forms 10g application where all the individual form modules/canvases display a big banner (covering top 20% of the screen). This was done by importing the image straight unto the content canvases. As you know this now becomes a "graphic Image" now embeded(& not referenced by file name) on the canvas. Also bear in mind that this is actually different from an "Image Item" which is a block object.
I dont know if this is possible, but what steps do i follow to make the image part of a jar file as opposed to my current situation. Please let me know if possible or not so I stop waisting development time looking for answers :)
Another question is how do i make this jar file a library object so that we can vary the image as we wish
NB: one other trick which i can think of is to create a giant push button across the screen to display the image and then stick it in a jar file !
Cheers
css_jay99

I don't know about embedded images imported in from the builder, but there is a way to use READ_IMAGE_FILE into a BLOCK.IMAGE_ITEM where the images are all in a jar file stored on the OAS.
Metalink Note:137397.1 explains it in details.
Tony

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Storing images and icons in a JAR file

Hi,
I current have a JAR file to store our application icons in the GIF format. The application also uses several images which I would prefer to be stored in the JAR file as JPG files.
Is it possible to store both GIFs and JPGs in a JAR and access them from Forms?
For Example:
I am using code like:
read_image_file('mess_bold.jpg','URL','IM_BOLD');
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Regards,
Tom Casserly

Hi,
I already had the entry imageBase=codebase in my formsweb.cfg
According to this article it is possible to read images from the JAR using the 'URL' parameter see
https://metalink.oracle.com/metalink/plsql/f?p=130:14:2109110130595761322::::p14_database_id,p14_docid,p14_show_header,p14_show_help,p14_black_frame,p14_font:NOT,137397.1,1,1,1,helvetica
I have managed to get the images loading from the JAR but only if I have them in the same directory and format (ie gif) as the icons. As I suggested above I think that read_image_file must be accessing the default.icons.iconpath=icons/ default.icons.iconextension=gif from my Registry.dat file.
There is also a slight problem that you cannot seem to use read_image_file in the WNFI or PF trigger as suggested here: Re: Read images from a jar file?
Has anyone managed to access images from a JAR in JPEG format alongside GIF icons?
Thanks for you help.
Regards,
Tom Casserly

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1. Once the cell number/service on the 3GS is transfered to the 5, the 3S will become basically an iPod touch until a new sim is in place, correct? We can still use wi-fi and the apps on the phone, and still be able to sync to iTunes, correct? iOS has been upgraded to 6.
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xml table is prepared.
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in my app I load an image via the Toolkit.getImage() method.
Works fine if the app and the image are in folders on disk.
It fails to load the image, if the app (and the image) is packed in a jar file.
How can I get the image from there?
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A Jar file is just a Zip file, with a few constructs for Java.
The getResource() method is used to create a mapping to data within the Jar file, but is actually not necessary after you know how the mapping works.
Just to give you an example of getResource:
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// then you can use this URL to load the resource
Image img = getImage(myURL);If you were you look at the value of myURL you would see something similar to the followiing.
jar:http://www.mywebsite.com/mydir/myjarfile.jar!/images/myimage.gifJust to break it down for you.
The line always starts with the word jar:
Followed by the path to your jar file.
A sepearator !/
Then the file you are loading from the Jar file.
jar: path_to_jar_file !/ path_to_resource_in_jar_fileSo if you'd like, you could just create a URL object, and define the path to the object using the above method rather than using getResource.
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How to call this out by clicking button from other file??

The following coding is easy and workable...!! i wonder how do i call this out by clicking button from other file... please help!!
import java.awt.geom.*;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
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import java.awt.event.*;
import java.awt.*;
import javax.swing.*;
import java.awt.print.*;
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final static Color red = Color.red;
final static Color white = Color.white;
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BasicStroke.CAP_BUTT,
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return Printable.NO_SUCH_PAGE;
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The following coding is easy and workable...!! i wonder how do i call
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In a headstart generated forms (designer 6 headstart 5.0.3) i have a lot of image items
(unbound items with the hint <IM>my_image.gif</IM>
It's a WebForms application.
I use jar archive file for images. But i see no any image in runtime.
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item_name => 'block.my_image_item'
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If images are in the jar file it don't works.
image_type for the web have to be 'URL' and
image_name my_image (without gif)
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How can i generate form with image_name (without extension) and image_type='URL'?
If it's impossible may be do you have a version of qms$block.init_image_item (for web :-) )
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Kind regards,
Roman Farber
null

procedure init_image_item
is
-- purpose: If the hint text contains the name of an image file,
-- enclosed between <IM> and </IM> tags, the image file is
-- is applied to the next item (which is the image item).
-- Procedure is customized for web.
-- Procedure will first looking for an image in archive jar file.
-- If image is not found in jar file we are going to looking for
-- an image in the file syatem.
l_image_file varchar2(50);
l_image_item varchar2(100);
l_image_type varchar2(10);
l_path varchar2(300);
l_path_specified boolean := false;
-- Only for web
l_image_name varchar2(50);
begin
l_image_file := qms$item.get_tagged_hint_info(l_cur_item,'<IM>','</IM>');
if l_image_file is null
then
return;
end if;
-- image file may be stored in forms parameter or global.
-- In both cases the image file should start with a colon
if instr(l_image_file,':') = 1
then
l_image_file := name_in(substr(l_image_file,2));
end if;
l_image_item := l_cur_block| |'.'| |get_item_property(l_cur_item_id,nextitem);
-- check if the next item is really an image item
if get_item_property(l_image_item,item_type) <> 'IMAGE'
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return;
end if;
-----====================================================
-- For Web Forms, Looking for the image in jar archive file
-- if file is not found (or it's not the application archive jar file )
-- then go to the file system.
SYNCHRONIZE;
-- Name of image without extension.
l_image_name := substr(l_image_file,1,instr(l_image_file,'.')-1);
-- message('l_image_name = '| |l_image_name);pause;
-- Suppress error FRM-47109, cannot locate image file
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qms$forms_errors.add_suppress_message('FRM-47109');
read_image_file(l_image_name,'URL',l_image_item);
SYNCHRONIZE;
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qms$forms_errors.delete_suppress_message('FRM-47109');
else
-- message('form wel succes');pause;
qms$forms_errors.delete_suppress_message('FRM-47109');
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-- file system
l_image_type := substr(l_image_file,instr(l_image_file,'.')+1);
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-- Suppress error FRM-47109, cannot locate image file
-- We need to suppress this message because the image files
-- might be located in one of the FORMS50_PATH directories
qms$forms_errors.add_suppress_message('FRM-47109');
read_image_file(l_path| |l_image_file,l_image_type,l_image_item);
if not form_success
then
qms$errors.show_debug_info('Image '| |l_image_file| |': not found on path '| |l_path
| |', now looking in FORM50_PATH directories' );
qms$forms_errors.delete_suppress_message('FRM-47109');
-- Try to read the image file again, without the path name
-- Forms will automatically search through all directories in the FORMS50_PATH
read_image_file(l_image_file,l_image_type,l_image_item);
qms$errors.show_debug_info('Item '| |l_image_item| |': read image '| |l_image_file);
else
qms$forms_errors.delete_suppress_message('FRM-47109');
qms$errors.show_debug_info('Item '| |l_image_item| |': read image '| |l_path| |l_image_file);
end if;
else
read_image_file(l_image_file,l_image_type,l imageitem);
qms$errors.show_debug_info('Item '| |l_image_item| |': read image '| |l_image_file);
end if;
exception
when form_trigger_failure then raise;
when others then qms$errors.unhandled_exception('qms$block.init_image_item');
end init_image_item;

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I have my application, a straight up executable running from Eclipse. It uses a jar file, call it JarA. JarA launches a GUI that is located in another jar file. Call it JarB. To recap:
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java.lang.NullPointerException
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Have you tried to move your image-files out of the jar file and place them in the sam folder as the jar-file? I think that would help.
When you try to load the image-file you get the NullPointerException because the program tries to read a file it can't find. Remember that a jar file IS a file and not a directory.
If you want to read somthing inside the jar-file you need to encode it first.
Have you tried to read the jar-file with winRar. It makes it easy to add and remove files in your jar-file.

How do I display Canvas Graphic image (Not Iconic button) from jar file

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