What is an event handler..?

I'm trying to learn how to make responsiveness UI. I've read that I can not use SwingUtilities.invokeLater() method if I am in a event handler. The question can seems stupid but I'm only a beginner: what is a event handler? From what I know it might be the actionPerformed method..is it right? Could somebody give me an example? thanks!

Basically an event handler is a class that performs code.
It can be any class (even the same that fires the event), but it has to implement the proper interface for the event you want to catch. If you want to perform special code when someone clicks on a button you want to catch an Action, therefor you need an ActionListener, a class that either implements the ActionListener interface (and therefor the method actionPerformed) or your class has to extend AbstractAction (and therefor has an actionPerformed, too).
It you want to perform special code when someone chooses an element from a list, you want to be informed about a ListSelectionEvent and therefor need a class that implements the ListSelectionListener Interface (and provides the method selectionChanged).
The class that should react on the event has to be declared as being a listener to the object that fires the events. So an actionListener on a Button would be added by
button.addActionListener(listener);or
button.setAction(action);(Note that all variables used are just for clarifiing the type you need and have to be exchanged by the names of your declared objects)
There are many more events ... really, read the tutorial!

Similar Messages

What type of event handling does the JList has?

hello
I know how to use handling using " anonymous inner class " when handling a JList, I don't like this way it is so confusing I would like to use the same way of handling JButton like this:
class Class1 extends JFrame implements ActionListener
//and the method is this one
public void actionPerformed( ActionEvent event )it is much better than the anonymous class. What is the handler of selecting in JList? is it this one?
ListSelectionListener
and the method is this?
public void valueChanged(ListSelectionEvent e)
I'm new in GUI Components so that's why I want to get used to the same old way of handling that I learned earlier :)
Could you provide me with an example please?
thank you

Have a look at [Selecting Items in a List|http://java.sun.com/docs/books/tutorial/uiswing/components/list.html#selection] in Sun's Tutorial. The ListDemo class implements ListSelectionListener.

Event handler - open with explorer issue

hi all,
I have developed an event handler (itemadded syncronuos) for a library. i need to populate title field
public override void ItemAdded(SPItemEventProperties properties)
base.ItemAdded(properties);
properties.ListItem["Title"] = "some value"
properties.ListItem.SystemUpdate();
I have deployed the same feature to 2 environments -> Dev Env, Test Env.
when I copy and paste a pdf file with "Open with explorer" in Dev Env it works fine.
when I do the same in Test Env i can't copy the file and i get this error:
Error 0x80070057: the parameter is incorrect.
I see this in my Event Viewer
The description for Event ID 14901 from source WebClient cannot be found. Either the component that raises this event is not installed on your local computer or the installation is corrupted. You can install or repair the component on the local computer.
If the event originated on another computer, the display information had to be saved with the event.
Could you help me?
Thanks.

On your local machine you are as you on the server, are you try it on the test server or browsing the test environment from local machine and doing the copy from local machine. also i hope your event handler is not firing on all the list, just make
sure. You can try this in a different library..create a fresh library and see what happen without event handler.
Mark ANSWER if this reply resolves your query, If helpful then VOTE HELPFUL
INSQLSERVER.COM
Mohammad Nizamuddin

Making a cutsom event handler for nodes

hi i was wondering how to go about making a custom eventhandler class for nodes
for eg. if a have a circle (c1) in the main.fx file
and i want to assign it Mouse and Key events(using onMousePressed etc)
but i dont want to write it in "c1"'s definiton directly coz i want the event handling code to be useful for another circle i may create later(call it c2)
can some tell me how to go about it ?
Appreciated. :-)
UPDATE:
ok i just realized that i could simply write a modified Circle class extending the Circle class.
So i can just create a new modified Circle object when needed.But how do i exactly write the class.The fixed variables i can simply override.But what about the event handling properties of the circle,how do i make sure they are initialzed for that object when the modified Circle object is created? what is the syntax??
Edited by: apratim_pranay on Apr 22, 2010 6:16 AM

hey i tried making a circle class like the above..
drag works fine..
thing is.. i've nested some effects..which "SHOULD" toggle on on keypresses ,but even though the key press is detected..effects dont appear..
public class modCircle extends Circle{
var c1e2:Glow;
var c1e4:Reflection=Reflection {bottomOpacity:0.0 topOpacity:0.5
                             fraction: 0.75 topOffset: 0.0};
     override var centerX=40;
     override var centerY=199;
     override var radius=40 ;
     override var fill= Color.BLACK;
     override var effect=c1e2=Glow {level:0.1 input:c1e4};
override def onMouseEntered= function( e: MouseEvent )
                          {requestFocus();}
override def onKeyPressed= function (e: KeyEvent): Void
                           if(e.code==KeyCode.VK_G)
                               if(c1e2.level==0.1)
                                {c1e2.level=0.9}
                               else
                                {c1e2.level=0.1}
                             if(e.code==KeyCode.VK_M)
                               if(c1e4.topOpacity==0.5)
                                 c1e4.fraction= 0.75;c1e4.topOffset= 0.0;
                                 c1e4.topOpacity= 0.5;c1e4.bottomOpacity= 0.0;
                               else
                                 c1e4.fraction= 0.75;c1e4.topOffset= 0.0;
                                 c1e4.topOpacity= 0.5;c1e4.bottomOpacity= 0.0;
}why is this happening??

How would I....? (Event Handling)

Let me first start by explaining what I am needing. I am given a JFrame containing a JButton and 8 JTextFields (in the form of an array). Right now I let the button be clicked no matter what is in the fields. What I would like is to limit the button's availablility based on the fields' content. The fields are being used as a form to fill out and the button is being used to save the form. What type of event handler would I use to enable the button only if the fields' contents are not empty? I have added an ActionListener to the button but for that to work the button needs to be enabled. I would like to keep the button completely disabled until the proper fields have been filled out.

I'm not sure which listener is best for your situation, maybe a DocumentListener. Regardless, you will have to create a component of some sort that listens to all text fields for changes. When it detects a change it should look at whether or not all fields are empty and enable or disable the button. Implementing this is pretty easy, for example you could iterate over each field checking the length of the String getText() returns, but that wouldn't be terribly efficient, what the best solution is I'm not sure. I think I might just keep a boolean isEmpty for each field, then for each field add a different listener that modifies that boolean to true whenever the field is empty and false whenever it's not. Would be less overhead with checking every field then, you could simply have every listener call an "updateButton()" method that would check the boolean values and enable or disable the button if necessary.
This belongs in the Swing forum, post future Swing questions there, but don't repost this one please.

Javascript error in event handler! edge 4.0.0.js, what to do about it?

Site
Hello everyone. I get an error in my chrome cosole, what can I do about this?
I dont have this problem in all browsers, just in chrome, and in some versions of Firefox.
The problem occurs when I click any label in the iframe (see website, speaks for itself).
line 5838 window.console.log("Javascript error in event handler! Event Type = " + eventType);
does anyone know how to fix this?
And why do I only have this problem in some browsers?

I basically want the labels in the Iframe to make the parent page animate to a specific anchor tag.
ps. This is what I posted on the jquery forum as well:
I tried to do this by letting the iframe .trigger a .click to a button on the .parent page.
I did this in two ways.
one: the click is triggerd in (/by) the iframe
two: the click is triggerd by a script in the parent window, that script is launched by the iframe
Here's the thing:
this is what one of the <a>'s that the iframe will click looks like:
<a class="nonblock nontext anim_swing" id="u185" href="index.html#contact"></a>
The code is generated by adobe muse which has a function to smoothly scroll to a location on the page, and I am guessing the "anim_swing" class takes care of that.
I would like the colorful labels in the iframe to do the same thing as the <a> above.
and it works in some browsers on some computers but somehow not on all of them (with method two the adblocker doesn't seem to be an issue ).
I also tried to let the parent page scroll directly with the jquery .scrollto function. That did not work either (see the jquery forum).

What event handling code do I need to access a web site ?

Hello
I am doing a GUI program that would go to a program or a web site when a button is clicked. What event handling code do I need to add to access a web site ?
for instance:     if (e.getSource() == myJButtonBible)
          // go to www.nccbuscc.org/nab/index.htm ? ? ? ? ? ? ?
        } below is the drive class.
Thank you in advance
import java.awt.*;
import javax.swing.*;
import javax.swing.border.*;
import javax.swing.event.*;
import java.awt.event.*;
import javax.swing.JEditorPane.*;
public class TryGridLayout
public TryGridLayout() {
    JFrame myJFrame = new JFrame("Choose your program");
    Toolkit myToolkit = myJFrame.getToolkit();
    Dimension myScreenSize = myToolkit.getDefaultToolkit().getScreenSize();
    //Center of screen and set size to half the screen size
    myJFrame.setBounds(myScreenSize.width / 4, myScreenSize.height / 4,
                       myScreenSize.width / 2, myScreenSize.height / 2);
    //change the background color
    myJFrame.getContentPane().setBackground(Color.yellow);
    //create the layout manager
    GridLayout myGridLayout = new GridLayout(2, 2);
    //get the content pane
    Container myContentPane = myJFrame.getContentPane();
    //set the container layout manager
    myContentPane.setLayout(myGridLayout);
    //create an object to hold the button's style
    Border myEdge = BorderFactory.createRaisedBevelBorder();
    //create the button size
    Dimension buttonSize = new Dimension(190, 100);
    //create the button's font object
    Font myFont = new Font("Arial", Font.BOLD, 18);
    //create the 1st button's object
    JButton myJButtonCalculator = new JButton("Calculator");
    myJButtonCalculator.setBackground(Color.red);
    myJButtonCalculator.setForeground(Color.black);
    // set the button's border, size, and font
    myJButtonCalculator.setBorder(myEdge);
    myJButtonCalculator.setPreferredSize(buttonSize);
    myJButtonCalculator.setFont(myFont);
    //create the 2nd button's object
    JButton myJButtonSketcher = new JButton("Sketcher");
    myJButtonSketcher.setBackground(Color.pink);
    myJButtonSketcher.setForeground(Color.black);
// set the button's border, size, and font
    myJButtonSketcher.setBorder(myEdge);
    myJButtonSketcher.setPreferredSize(buttonSize);
    myJButtonSketcher.setFont(myFont);
    //create the 3rd button's object
    JButton myJButtonVideo = new JButton("Airplane-Blimp Video");
    myJButtonVideo.setBackground(Color.pink);
    myJButtonVideo.setForeground(Color.black);
// set the button's border, size, and font
    myJButtonVideo.setBorder(myEdge);
    myJButtonVideo.setPreferredSize(buttonSize);
    myJButtonVideo.setFont(myFont);
    //create the 4th button's object
    JButton myJButtonBible = new JButton("The HolyBible");
    myJButtonBible.setBackground(Color.white);
    myJButtonBible.setForeground(Color.white);
// set the button's border, size, and font
    myJButtonBible.setBorder(myEdge);
    myJButtonBible.setPreferredSize(buttonSize);
    myJButtonBible.setFont(myFont);
    //add the buttons to the content pane
    myContentPane.add(myJButtonCalculator);
    myContentPane.add(myJButtonSketcher);
    myContentPane.add(myJButtonVideo);
    myContentPane.add(myJButtonBible);
    JEditorPane myJEditorPane = new JEditorPane();
    //add behaviors
    ActionListener myActionListener = new ActionListener() {
      public void actionPerformed(ActionEvent e) throws Exception
        /*if (e.getSource() == myJButtonCalculator)
          new Calculator();
        else
        if (e.getSource() == myJButtonSketcher)
          new Sketcher();
        else
        if (e.getSource() == myJButtonVideo)
          new Grass();
        else*/
        if (e.getSource() == myJButtonBible)
           // Go to http://www.nccbuscc.org/nab/index.htm
    }; // end of actionPerformed method
    //add the object listener to listen for the click event on the buttons
    myJButtonCalculator.addActionListener(myActionListener);
    myJButtonSketcher.addActionListener(myActionListener);
    myJButtonVideo.addActionListener(myActionListener);
    myJButtonBible.addActionListener(myActionListener);
    myJFrame.setVisible(true);
} // end of TryGridLayout constructor
public static void main (String[] args)
    new TryGridLayout();
} // end of TryGridLayout class

Hello
I am doing a GUI program that would go to a program or a web site when a button is clicked. What event handling code do I need to add to access a web site ?
for instance:     if (e.getSource() == myJButtonBible)
          // go to www.nccbuscc.org/nab/index.htm ? ? ? ? ? ? ?
        } below is the drive class.
Thank you in advance
import java.awt.*;
import javax.swing.*;
import javax.swing.border.*;
import javax.swing.event.*;
import java.awt.event.*;
import javax.swing.JEditorPane.*;
public class TryGridLayout
public TryGridLayout() {
    JFrame myJFrame = new JFrame("Choose your program");
    Toolkit myToolkit = myJFrame.getToolkit();
    Dimension myScreenSize = myToolkit.getDefaultToolkit().getScreenSize();
    //Center of screen and set size to half the screen size
    myJFrame.setBounds(myScreenSize.width / 4, myScreenSize.height / 4,
                       myScreenSize.width / 2, myScreenSize.height / 2);
    //change the background color
    myJFrame.getContentPane().setBackground(Color.yellow);
    //create the layout manager
    GridLayout myGridLayout = new GridLayout(2, 2);
    //get the content pane
    Container myContentPane = myJFrame.getContentPane();
    //set the container layout manager
    myContentPane.setLayout(myGridLayout);
    //create an object to hold the button's style
    Border myEdge = BorderFactory.createRaisedBevelBorder();
    //create the button size
    Dimension buttonSize = new Dimension(190, 100);
    //create the button's font object
    Font myFont = new Font("Arial", Font.BOLD, 18);
    //create the 1st button's object
    JButton myJButtonCalculator = new JButton("Calculator");
    myJButtonCalculator.setBackground(Color.red);
    myJButtonCalculator.setForeground(Color.black);
    // set the button's border, size, and font
    myJButtonCalculator.setBorder(myEdge);
    myJButtonCalculator.setPreferredSize(buttonSize);
    myJButtonCalculator.setFont(myFont);
    //create the 2nd button's object
    JButton myJButtonSketcher = new JButton("Sketcher");
    myJButtonSketcher.setBackground(Color.pink);
    myJButtonSketcher.setForeground(Color.black);
// set the button's border, size, and font
    myJButtonSketcher.setBorder(myEdge);
    myJButtonSketcher.setPreferredSize(buttonSize);
    myJButtonSketcher.setFont(myFont);
    //create the 3rd button's object
    JButton myJButtonVideo = new JButton("Airplane-Blimp Video");
    myJButtonVideo.setBackground(Color.pink);
    myJButtonVideo.setForeground(Color.black);
// set the button's border, size, and font
    myJButtonVideo.setBorder(myEdge);
    myJButtonVideo.setPreferredSize(buttonSize);
    myJButtonVideo.setFont(myFont);
    //create the 4th button's object
    JButton myJButtonBible = new JButton("The HolyBible");
    myJButtonBible.setBackground(Color.white);
    myJButtonBible.setForeground(Color.white);
// set the button's border, size, and font
    myJButtonBible.setBorder(myEdge);
    myJButtonBible.setPreferredSize(buttonSize);
    myJButtonBible.setFont(myFont);
    //add the buttons to the content pane
    myContentPane.add(myJButtonCalculator);
    myContentPane.add(myJButtonSketcher);
    myContentPane.add(myJButtonVideo);
    myContentPane.add(myJButtonBible);
    JEditorPane myJEditorPane = new JEditorPane();
    //add behaviors
    ActionListener myActionListener = new ActionListener() {
      public void actionPerformed(ActionEvent e) throws Exception
        /*if (e.getSource() == myJButtonCalculator)
          new Calculator();
        else
        if (e.getSource() == myJButtonSketcher)
          new Sketcher();
        else
        if (e.getSource() == myJButtonVideo)
          new Grass();
        else*/
        if (e.getSource() == myJButtonBible)
           // Go to http://www.nccbuscc.org/nab/index.htm
    }; // end of actionPerformed method
    //add the object listener to listen for the click event on the buttons
    myJButtonCalculator.addActionListener(myActionListener);
    myJButtonSketcher.addActionListener(myActionListener);
    myJButtonVideo.addActionListener(myActionListener);
    myJButtonBible.addActionListener(myActionListener);
    myJFrame.setVisible(true);
} // end of TryGridLayout constructor
public static void main (String[] args)
    new TryGridLayout();
} // end of TryGridLayout class

What is the correct process to return errors from an Event Handler

I have a pre-Create and pre-Modify Event Handlers. If the event handler detects an error, I want to throw an exception back to terminate the create user or modify user event. I also want to display a meaningful error message on the OIM UI. In my pre-modify event handler I am throwing the following exception when an error is detected:
throw new EventFailedException(processId, null, "User ID not available", "", "MODIFY", null);
However, the OIM UI is not displaying the message "User ID not available" as I want it to. Instead it is displaying the following error message:
An error occurred. The corresponding error code is IAM-0080062
Does anyone know where that error code is coming from? My event handler is not doing that. Also, does anyone know where I can find any documentation on the proper use of the EventFailedException? What do the parameters mean? How do I get a meaningful error message to display on the OIM UI?
Thank you for any help here.
-Dave

Please try to cancel the PO 1st and then Cancel Sales order...
Refer following note id
How to Cancel a Drop Ship Order Line (Doc ID 393688.1)
Thanks

Event handler method definitions - whats the difference

hi folks,
i'm a newbie and have just started trying to get my head
around flash 8 actionscript.
is anyone able to advise me what is the
distinction/difference/subtlety between defining an event handler
method ON a keyframe as compared to defining an event handler
method WITHIN a keyframe.
evidently this is a keypoint to understand so if i don't get
this clear i expect it'll cause me grief later.
thanx for your response.
regards,
avonova

I wouldn't say ON a keyframe, that sounds like on a frame. I
believe you mean the difference between on(clip event) which is
placed on an instance of a movieclip or myClip.onClipEvent which is
code placed on a timeline/frame.
Thanks aniebel for that link. David Stiller is a genius and
really hit the point.
For me code consolidation is certainly the biggest reason for
it as well. But from that you start to see ways to put your code
together that are just better and lead naturally into OOP style and
concepts.
avonova – it is totally worth learning how to do it
this way. In AS3 you will no longer be able to use any of the
on(clipEvent) style coding. (Still supported in CS3 if you publish
to earlier versions of AS2 or 1.)

What is Triggering and Handling Events in ABAP OOPs

Gowri

) TYPE type ..
To declare static events, use the following statement:
CLASS-EVENTS ... ...
It links a list of handler methods with corresponding trigger methods. There are four different types of event.
It can be
·        An instance event declared in a class
·        An instance event declared in an interface
·        A static event declared in a class
·        A static event declared in an interface
The syntax and effect of the SET HANDLER depends on which of the four cases listed above applies.
For an instance event, you must use the FOR addition to specify the instance for which you want to register the handler. You can either specify a single instance as the trigger, using a reference variable
After the RAISE EVENT statement, all registered handler methods are executed before the next statement is processed (synchronous event handling). If a handler method itself triggers events, its handler methods are executed before the original handler method continues. To avoid the possibility of endless recursion, events may currently only be nested 64 deep.
Handler methods are executed in the order in which they were registered. Since event handlers are registered dynamically, you should not assume that they will be processed in a particular order. Instead, you should program as though all event handlers will be executed simultaneously.
"Example :
REPORT demo_class_counter_event.
CLASS counter DEFINITION.
PUBLIC SECTION.
    METHODS increment_counter.
    EVENTS critical_value EXPORTING value(excess) TYPE i.
PRIVATE SECTION.
    DATA: count     TYPE i,
          threshold TYPE i VALUE 10.
ENDCLASS.
CLASS counter IMPLEMENTATION.
METHOD increment_counter.
    DATA diff TYPE i.
    ADD 1 TO count.
    IF count > threshold.
      diff = count - threshold.
      RAISE EVENT critical_value EXPORTING excess = diff.
    ENDIF.
ENDMETHOD.
ENDCLASS.
CLASS handler DEFINITION.
PUBLIC SECTION.
    METHODS handle_excess
            FOR EVENT critical_value OF counter
            IMPORTING excess.
ENDCLASS.
CLASS handler IMPLEMENTATION.
METHOD handle_excess.
    WRITE: / 'Excess is', excess.
ENDMETHOD.
ENDCLASS.
DATA: r1 TYPE REF TO counter,
      h1 TYPE REF TO handler.
START-OF-SELECTION.
CREATE OBJECT: r1, h1.
SET HANDLER h1->handle_excess FOR ALL INSTANCES.
DO 20 TIMES.
    CALL METHOD r1->increment_counter.
ENDDO.
The class COUNTER implements a counter. It triggers the event CRITICAL_VALUE when a threshold value is exceeded, and displays the difference. HANDLER can handle the exception in COUNTER. At runtime, the handler is registered for all reference variables that point to the object.
Reward points if it is usefull ...
Girish

What is event handler in oopsand why we need it and how to use it ?

Hi everyone ,
I am new to sdn.I did not understand event handler in oops .Please replay to this .
Thanks & Regards,
Sudeep Subudhi.
Moderator Message: Welcome to SDN. Please read the [Forum Rules of Engagment|Welcome and Rules of Engagement; before posting your question.
Edited by: Suhas Saha on Jan 9, 2012 2:51 PM

EDIT: BAH! I posted too slow... but there is still some information about saving and clearing in there
Its for making a playlist while your 'on the go'. So you click and hold the middle button the selected song (or album) should flash... Then you go into the playlist menu (music>playlists>on-the-go) and use it like any normal playlist...
When there's songs on the playlist it gives you the option to save or clear at the end of the song list, you select either one and it'll ask for conformation.
It works in both manually sync and auto sync mode. But if you have it on auto sync the play list will be created in iTunes...
So I'm not sure why you don't see songs in it after yo assign them to it, try sending a whole album and then music>playlists>on-the-go the album songs should be listed.
As for reasons to use it well maybe while out and about you realise that you want to hear from two artists at the same time, Radiohead and Bowie, in a shuffle mode. You could make it a on-the-go playlist. Or there's a few podcasts you want to hear in order... so you go down the list and assign them to on-the-go.
Some people use the On the go to note songs that need to be looked at in iTunes later, maybe because its too quiet, badly imported or they don't understand how such a bad song found its way onto the iPod.
Once you save it if you try and put more songs to it, 'on-the-go-1' will be created.
-hope this helps

What's different between event handle by bsp frame & MAC

Hi,
Can anyone know the different between event handle by BSP frame & handle by MAC?
and how to know which event is handle by BSP frame or MAC?
thanks
Gang

Hi Abdul,
So that means the add_entry event is standard event handle by BSP frame.
thanks
Gang

How can I execute an external program from within a button's event handler?

I am using Tomcat ApacheTomcat 6.0.16 with Netbeans 6.1 (with the latest JDK/J2EE)
I need to execute external programs from an event handler for a button on a JSF page (the program is compiled, and extremely fast compared both to plain java and especially stored procedures written in SQL).
I tried what I'd do in a standalone program (as shown in the appended code), but it didn't work. Instead I received text saying the program couldn't be found. This error message comes even if I try the Windows command "dir". I thought with 'dir' I'd at least get the contents of the current working directory. :-(
I can probably get by with cgi on Apache's httpd server (or, I understand tomcat supports cgi, but I have yet to get that to work either), but whatever I do I need to be able to do it from within the button's event handler. And if I resort to cgi, I must be able to maintain session jumping from one server to the other and back.
So, then, how can I do this?
Thanks
Ted
NB: The programs that I need to run do NOT take input from the user. Rather, my code in the web application processes user selections from selection controls, and a couple field controls, sanitizes the inoputs and places clean, safe data in a MySQL database, and then the external program I need to run gets safe data from the database, does some heavy duty number crunching, and puts the output data into the database. They are well insulated from mischeif.
NB: In the following array_function_test.pl was placed in the same folder as the web application's jsp pages, (and I'd tried WEB-INF - with the same result), and I DID see the file in the application's war file.
        try {
            java.lang.ProcessBuilder pn = new java.lang.ProcessBuilder("array_function_test.pl");
            //pn.directory(new java.io.File("K:\\work"));
            java.lang.Process pr = pn.start();
            java.io.BufferedInputStream bis = (java.io.BufferedInputStream)pr.getInputStream();
            String tmp = new String("");
            byte b[] = new byte[1000];
            int i = 0;
            while (i != -1) {
                bis.read(b);
                tmp += new String(b);
            getSelectionsDisplayTextArea().setText(getSelectionsDisplayTextArea().getText() + "\n\n" + tmp);
        } catch (java.io.IOException ex) {
            getSelectionsDisplayTextArea().setText(getSelectionsDisplayTextArea().getText() + "\n\n" + ex.getMessage());
        }

Hi Fonsi!
One way to execute an external program is to use the System Exec.vi. You find it in the functions pallet under Communication.
/Thomas

Unable to get automatic event handling for OK button.

Hello,
I have created a form using creatobject. This form contains an edit control and Search, Cancel buttons. I have set the Search buttons UID to "1" so it can handle the Enter key hit event. Instead its caption changes to Update when i start typing in the edit control and it does not respond to the Enter key hit. Cancel happens when Esc is hit.
My code looks like this -
Dim oCreationParams As SAPbouiCOM.FormCreationParams
        oCreationParams = SBO_Application.CreateObject(SAPbouiCOM.BoCreatableObjectType.cot_FormCreationParams)
        oCreationParams.UniqueID = "MySearchForm"
        oCreationParams.BorderStyle = SAPbouiCOM.BoFormBorderStyle.fbs_Sizable
                Dim oForm As SAPbouiCOM.Form = SBO_Application.Forms.AddEx(oCreationParams)
oForm.Visible = True
'// set the form properties
        oForm.Title = "Search Form"
        oForm.Left = 300
        oForm.ClientWidth = 500
        oForm.Top = 100
        oForm.ClientHeight = 240
        '// Adding Items to the form
        '// and setting their properties
        '// Adding an Ok button
        '// We get automatic event handling for
        '// the Ok and Cancel Buttons by setting
        '// their UIDs to 1 and 2 respectively
        oItem = oForm.Items.Add("1", SAPbouiCOM.BoFormItemTypes.it_BUTTON)
        oItem.Left = 5
        oItem.Width = 65
        oItem.Top = oForm.ClientHeight - 30
        oItem.Height = 19
        oButton = oItem.Specific
        oButton.Caption = "Search"
        '// Adding a Cancel button
        oItem = oForm.Items.Add("2", SAPbouiCOM.BoFormItemTypes.it_BUTTON)
        oItem.Left = 75
        oItem.Width = 65
        oItem.Top = oForm.ClientHeight - 30
        oItem.Height = 19
        oButton = oItem.Specific
        oButton.Caption = "Cancel"
oItem = oForm.Items.Add("NUM", SAPbouiCOM.BoFormItemTypes.it_EDIT)
        oItem.Left = 105
        oItem.Width = 140
        oItem.Top = 20
        oItem.Height = 16
        Dim oEditText As SAPbouiCOM.EditText = oItem.Specific
What changes do i have to make to get the enter key to work?
Thanks for your help.
Regards,
Sheetal

Hello Felipe,
Thanks for pointing me to the correct direction.
So on refering to the documentation i tried out a few things. But I am still missing something here.
I made the following changes to my code -
oForm.AutoManaged = True
oForm.SupportedModes = 1 ' afm_Ok
oItem = oForm.Items.Add("1", SAPbouiCOM.BoFormItemTypes.it_BUTTON)
        oItem.Left = 5
        oItem.Width = 65
        oItem.Top = oForm.ClientHeight - 30
        oItem.Height = 19
oItem.SetAutoManagedAttribute(SAPbouiCOM.BoAutoManagedAttr.ama_Visible, 1, SAPbouiCOM.BoModeVisualBehavior.mvb_Default)
        oButton = oItem.Specific
        oButton.Caption = "OK"
AND
oForm.Mode = SAPbouiCOM.BoFormMode.fm_OK_MODE
oItem = oForm.Items.Add("1", SAPbouiCOM.BoFormItemTypes.it_BUTTON)
        oItem.Left = 5
        oItem.Width = 65
        oItem.Top = oForm.ClientHeight - 30
        oItem.Height = 19
oItem.AffectsFormMode = False
I get the same behaviour OK button changes to update and enter key does not work.
Could you please tell me find what is it that i am doing wrong?
Regards,
Sheetal

Input value given on web page is not getting pickedup in event handler

Hi friends,
I have created one simple page in SE80 with program with flow logic option, in which I would like to show business partner details from BUT000 table with the input of partner number. But the thing is the input value(partner no.)which I am giving on web page is not getting picked up in selection in event handler though I am giving input value it is becoming initial while selecting. What could be the reason?
Below I am mentioning the code which I have written in even handler for OnInputProcessing event.
CASE EVENT_ID.
WHEN 'select'.
NAVIGATION->SET_PARAMETER( 'partner' ).
SELECT * FROM but000 INTO TABLE I_but000 WHERE partner BETWEEN partner AND partner1.
WHEN OTHERS.
ENDCASE.
Thanks in advance,
Steve

Hi Abhinav,
I tried with the one you posted. But it is giving run time error as shown below.
Note
The following error text was processed in the system CRD : Access via 'NULL' object reference not possible.
The error occurred on the application server crmdev_CRD_00 and in the work process 0 .
The termination type was: RABAX_STATE
The ABAP call stack was:
Method: ONINPUTPROCESSING of program CLO24DDFJW575HVAQVJ89KWHEHC9OCP
Method: %_ONINPUTPROCESSING of program CL_O24DDFJW575HVAQVJ89KWHEHC9OCP
Method: DO_REQUEST of program CL_BSP_PAGE===================CP
Method: ON_REQUEST of program CL_BSP_RUNTIME================CP
Method: IF_HTTP_EXTENSION~HANDLE_REQUEST of program CL_HTTP_EXT_BSP===============CP
Method: EXECUTE_REQUEST_FROM_MEMORY of program CL_HTTP_SERVER================CP
Function: HTTP_DISPATCH_REQUEST of program SAPLHTTP_RUNTIME
Module: %_HTTP_START of program SAPMHTTP
Regards,
Steve

What is an event handler..?

Similar Messages

Maybe you are looking for