How to handle events for Tab Control
Hi,
I have a Tab control with 4 tabs and I would like when I go to a specific tab all the contents of that tab being updated. Could you please help me with this?
How should I set the event structure
Thanks
Tab Control->Value Change is the event you want. You can then use a case structure to do whatever you need it to based on the "New Value".
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Handling event for Tree Control Collapse
Hi,
Can any one suggest how to handle an event for 'Tree Node Collapse' . I have checked with all the exised tree events.
thanks,
VenuHi Venugopal,
If you are doing tree control programmin then i can suggest you a approach for tree node collapse and expand.
for doing this follow these steps.
1. create a toolbar (use class cl_gui_toolbar), add a button and assign a FCODE to it.
2. here you register the following the event for the toolbar.
gs_event-eventid = cl_gui_toolbar=>m_id_function_selected.
3. here you set the handler for the toolbar events
SET HANDLER gref_application->handle_function_selected
FOR gref_toolbar.
4. now in your class for gref_application you write a definition and implementation.
definition
handle_function_selected FOR EVENT handle_function_selected OF cl_gui_toolbar IMPORTING fcode.
implementation
CASE fcode.
when 'collapse'.
CALL METHOD xref_tree->collapse_all_nodes.
this method might change depending upon the class you use for creating the tree.
i hope this will help you.
in case of clarification do get back to me.
regards,
Kinshuk Saxena
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ALV: how to handle event for multi (lead) row selection ?
Hi,
I use editable ALV and configure it for multi (lead) selection. Works fine.
But I could not find any event handler for reading the selected lines.
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How to Handle Events for JOptionPane buttons?
Hi All,
I need a help...
I am trying to develop a simple SWING application that consists of multiple elements (mainly text fields) and a Submit button. On pressing Submit button, it should validate all the fields and then do something else. But if some fields are left blank, then it should give a pop-up message and on clicking the OK button on the pop-up message, the focus should go to that text field which is left null.
The problem is I am not able to understand how to Capture this OK button click-event of the pop-up message. I mean how to do something when the OK/Cancle button of the pop-up window is clicked.
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Thanks in Advance,
UjjalAs already pointed out, JOptionPane has some static methods which show a dialog, and return an int, or a string. The whole point of this class is to remove the need for any event handling by the developer, that is, you simply call the showDialog method or whatever, and it returns a value telling you, for example, which button was pressed - no need for action listeners at all. The result of the showDialog method (or whichever you use) tells you which button was pressed. Check the javadocs for JOptionPane for details of several constants that indicate which button was pressed
The class exists to make simple dialogs trivial to generate - you're overcomplicating things! -
How to handle Events in OO abap.
Hii all as im new to SAP and ABAP , i want to know , what are events all about and how to handle events?
Like how to guide double click to call a transaction , or to create a hot sopt and then , calling the transaction...........
Please Help.Hi Chandan,
possibly you are not just new to ABAP but new to obeject oriented programming in general. In oo, you use events to trigger methods that are registered as 'listeners' for the event.
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How to handle Event in JACOB API
Hi,
I am read the outlook mail using JACOB[Java Com Bridge] API successfully, now i want to handle events for outlook mail using JACOB. and also i can able to catch the new mail event. but i am unable to catch any deleted mail and move mail from one folder to another folder. This is extremely important for my project. so any one please tell me how to handle and catch the Outlook deleted event and move event using JACOB.
Thanks in Advance,
With Regards,
GaneshWindows can be closed in a number of ways and the simplest way to trap them would be to handle Window Closing in code behind.
This is also the easiest way to show dialogs if that's how you wanted the warning message to appear.
This:
chxAllowToClose.IsChecked
Looks like a checkbox to me, seeing as you have IsChecked.
That presumably means you already have that bound to a viewmodel and visible to the user.
You can therefore just test that value from the view.
If you prefer to hide that instead then there are several options.
You could have a dependency property and a binding in code behind which binds to the viewmodel. Test that in your event.
Or
You could save the value when it changes to application.current.resources. Since dependency properties and bindings are a bit wordy this is easier.
Or
You could have just a variable in the view code behind and use messenger to tell that when the value changes from the viewmodel:
http://social.technet.microsoft.com/wiki/contents/articles/26070.communicating-between-classes.aspx
Please don't forget to upvote posts which you like and mark those which answer your question.
My latest Technet article - Dynamic XAML -
I have a JApplet (menuhandle.java) that adds a menubar. While handling events for the "Open" menu item under File menu(to make it show the OpenFileDialog box) a NullPointerException was thrown. How should this be overcome?
public void actionPerformed(ActionEvent e)
if (e.getActionCommand() =="Open")
chooser = new JFileChooser();
int returnVal = chooser.showOpenDialog(new menuhandle());
chooser.setFileSelectionMode(JFileChooser.FILES_ONLY);
ExampleFileFilter filter = new ExampleFileFilter();
filter.addExtension("dcm");
filter.setDescription("Dicom files");
chooser.setFileFilter(filter);
if(returnVal == JFileChooser.APPROVE_OPTION)
File file=chooser.getSelectedFile();
if(filter.accept(file))
str=file.getName();
I need to display the Open File dialog box and also retrieve the file the user actually selected, in order to do certain manipulations with it. Can somebody tell me how to go about this?Just a guess, but could the problem be related tothe
fact that for security purposes many file
manipulation functionality is disabled in applets?Indeed. The SecurityManager for unsigned applets does
not allow the use of JFileChooser
Thanx a lot. But if i make menuhandle .java as a simple class (without extending JApplet) and then try to use this class from inside another applet........will this work? Or will the SecurityManager still not allow the use? -
How to create EVENTS for a View Cluster.
Hi Tech Gurus,
I have created a view cluster on 5 tables. I need to do a validation and this can be done by using events. But i am unable to create a EVENT for the View Cluster. Could anyone please tell me how to create events for a View Cluster.
Thanks in advance for your esteemed replies.
Regards,
Raghavendra Goutham P.Hello Pasapula
When you are in the View Cluster maintenance dialog (SE54) click on dialog "Events".
Below the field for the view cluster you have an additional field <b>FORM routines main program</b>. There you have to add the main program containing the FORM routines called by the VC events.
For example: I had defined a normal report containing an include with all the FORM routines. The report contains only the following lines of coding:
report zus_0120_u1.
* Common Data und access routines for user exits in VC maintenance
include LSVCMCOD.
include zus_0120_f1. "FORM routines for VC events
Now in the "Events" dialog of the view cluster maintenance you assign your FORM routines to the events.
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How to handle bdc for more than one transaction?
how to handle bdc for more than one transaction?
Hi srk,
I am providing you with some references below. Hope this prove to be helpful to you.
Method 1:
Use one BDC_OPEN_GROUP
Multiple BDC_INSERT
One BDC_CLOSE_GROUP.
Call function BDC_OPENGROUP.
Build BDC data and call lBDC_INSERT for transaction 1
Build BDC data and call lBDC_INSERT for transaction 2
Build BDC data and call lBDC_INSERT for transaction 3
paas the tcodes to bdc_insert.
call function BDC_CLOSE_GROUP.
Also check this out:
Here we need to record 2 transactions (shdb).
Once completion of the recording. Populate the data into input internal table .
Loop the internal table and process the 2 transactions
like
1. BDC_OPEN_GROUP
2. LOOP AT ITAB
a. Populate first transaction recording data
and pass transaction to the BDC_INSERT_GROUP.
BDC_INSERT_GROUP.
b. Populate second transaction recording data
and pass transaction to the BDC_INSERT_GROUP.
BDC_INSERT_GROUP.
ENDLOOP.
3. BDC_CLOSE_GROUP
the above info can be found at : How to use 2 transactions in BDC?
Also check this out:
Suppose u have created recordings for transactions 'MM01' 'XK01' and 'VA01'.
Then do this:
bdc_open_group.
after this we have to fill the bdcdata structure for one transaction.here 'MM01'.
bdc_insert.
refresh bdcdata.
after this we have to fill the bdcdata structure for one transaction.here 'xk01'.
bdc_insert .
refresh bdcdata.
after this we have to fill the bdcdata structure for one transaction.here 'va01'.
bdc_insert.
bdc_close_group.
Hope these are useful to you.
Please reward if any of the above are useful.
Regards,
Kalyan -
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How to handle event structures for two buttons and two counters.
*I have two buttons A and B, and have to compare the difference in hits between them. So do I place an event structure within a while loop for each button (2 buttons, 2 event structures, 2 while loops), or does it need to be one event structure with cases for both buttons whithin one while loop?
*How do I pass the values of buttons A and B's hit counters out of the while loop in order to calculate the differences between them after each increment, not just the final count after the stop button is hit?
*How would I make one stop button work to handle both buttons A and B? I tried to place the actual stop button in one button A's structure and its global in B's structure, but It wont seem to let me use a local variable for a latchable control
CheckerYou should probably have not started a new thread and waited until your question in the original thread was answered. You can modify altenbach's example for a second button. You have a single event structure with a new event for the second button. You have a second shift register to track the number of times the second button is pressed. Inside the while loop but outside the event structure, you just have a subtract function in or to report the difference. do not modify the posted example for the stop button. It works perfectly as is.
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How can I register a Event for TAB???
Hi,
my problem is, that i search for an solution to register an Event for Tabulator (Tab Key).
If i klick to tab, than it must be trigger the event!!
I have found in forum following:
http://webcache.googleusercontent.com/search?q=cache:fk2pfn0bhiwj:www.sdn.sap.com/irj/scn/thread%3fmessageid%3d1078796eventtabulatoralvgrid&cd=50&hl=de&ct=clnk&gl=de
How must I register my TAB Event ????
Please give an example!
Thanks in forwards.
ErsinThanks for Help:-)
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Hi,
I use a tab control which got in the meanwhile more tabs than could still all be displayed simultaneously. That's why I would like to use a menu ring instead of the tabs in order to control which tab will be displayed in the forefront. However, I could not yet figure out how to change the "page label display" of the tab control into a menu ring. Have a look onto my simple example. I guess you agree that my current solution doesn't really look like a pull down menu although it works like one. Any hint how to improve the design?
Thanks in advance,
Peter
Attachments:
Tab_Control.vi 17 KBHere's an example that is based on an example that ships with LV. I cleaned it up a bit so it would look mre like a "real" application. It's not great from the standpoint of code design (No error handling for instance) but it shows how these plugins could work.
Mike...
Certified Professional Instructor
Certified LabVIEW Architect
LabVIEW Champion
"... after all, He's not a tame lion..."
Be thinking ahead and mark your dance card for NI Week 2015 now: TS 6139 - Object Oriented First Steps
Attachments:
subpanel.llb 72 KB -
How to handle events in webdynpro abap
Hi,
can any body explain how to handle the events in webdynpro abap.
i want to know some concepts in general.
Thanks,Hi Mahesh,
you can create event handlers under the actions tab in you view. evry event handler has an importing parameter wdevent of type ref to cl_wd_custom_event.
you can also create events in your component controller and they can be handled within your views
check cl_wd_custom_event class for details about what all information you get when an event occurs.
for further details you can check out the following links
http://help.sap.com/saphelp_nw04s/helpdata/en/eb/ed6f4169e25858e10000000a1550b0/frameset.htm
http://help.sap.com/saphelp_nw04s/helpdata/en/a9/c751415e3b6532e10000000a1550b0/frameset.htm
also you can try the tutorial at the following link for further clarity
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/2eb11b59-0a01-0010-dfa3-8292abdf9c4f
Regards,
Shweta
Message was edited by:
Shweta R Shanbhag -
How can I lock a tab control untill fuction within tab is complete?
Hi
I am a little stumpt. What I would like to do is to lock a Tab control until the fuction within the tab is complete (and have a dialogue box saying something like "fuction 1 must stop before you can run function 2").
I realise some event based programming would have been best but I wonder if there is a quicker fix as the code I produced is quite complex now.
I attach an example (tab control and two case stuctures) to clarify what I need to do.
I know there is probably a really simple answer so sorry to be so dim.
Many thanks
Ash
Attachments:
Example.vi 13 KBI'm still of the opinion that you need to disable the tab control. It's quite hard to give advice without knowing the background. Ok, I know what you want to accomplish, but I don't know how it fits in the rest of your app.
Ha look at the "wizard" template which could be another solution for you.
Using LV8.0
Don't be afraid to rate a good answer...
Attachments:
LV_Wizard_Dialog.vit 120 KB
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