Bringing dynamically created controls into scope

Normally I can bring controls into scope in a function with
the line
var myControl = myControl;
where myControl is the name of the control.
If I dynamically create controls (called say cbx1, cbx7 etc.
where the
numbers are all different, but not necessarily contiguous)
and save
their names in myArray, then myArray[0] will contain the name
of one of
my new controls.
How can I bring this control into scope in my function?
And is there a way to create, read and change variable
variables in
ActionScript?
Doug

create an array within your function that's local to your
function, if that's what you want. what's the purpose,
though?

Similar Messages

AutoScrolling of PanelLayout and setting Location of dynamically created controls

Hi, I have a question related to setting Location of dynamically created controls when my PanelLayout is scrolled down or up.
So basically I have wrote a code that lets me drag on control over other other and replace their's locations.
So I wanted to add possibility for user to dynamically add new controls (every new control is suppose to be 200px below previous) - everything is fine as long as I add them from upper section of my LayoutPanel (without scrolling) but when I try to add
them while I'm half dawn scrolled they are placed based on CURRENT left upper corner which is NOT a upper left corner of LayoutPanel therfore they are placed with wrong padding based on current scrolled position.
So my question is how can I avoid it and always add new controls based on LayoutPanel upper left corner? (I have already tried disabling AutoScroll while adding new control and enabling it back after adding - it works but I want to find PROPER way because
I'm sure there must be some kind of solution to it)
Thanks in advance.

Hi darekg11,
>> I have a question related to setting Location of dynamically created controls when my PanelLayout is scrolled down or up
I am wondering what the PanelLayout was, was it a “flowLayoutPanel” or “tableLayoutPanel”?
>> basically I have wrote a code that lets me drag on control over other other and replace their's locations
Did you mean you drag the control at runtime or at design time?
>> how can I avoid it and always add new controls based on LayoutPanel upper left corner
I could not reproduce your issue, and could you share us some key code or a simple demo to reproduce your issue?
I made a research about “scrolling panel”, and I think the link below might be useful to you:
# Scrolling Panel
http://www.codeproject.com/Articles/226381/Scrolling-Panel
Best Regards,
Edward
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Accessing a dynamically created control

I have created a method inside a class to create a combobox. here is my code
package com.inf
import mx.controls.*;
public class ClsInf
public function ClsInf()
public function addDistDrp(source):void{
var objDist:ComboBox=new ComboBox();
objDist.id="cmbDist";
source.addChild(objDist);
in my AS file I wrote
var objInf:ClsInf=new ClsInf();
objInf.addDistDrp(myTargetId);
here I am able to create the combobox. But Now My problem is here how access the combobox so that I can fill data, disable it, set style inti it etc.
suppose if I have to set a style into it . I am trying to access it by its ID like
cmbDist.styleName="clearButton2"
which showing error. how can I access . Pls Help!

Thanks Adrian, This is working if I am calling the addDistDrop method directly But here is a twist . Inside that class I have written one more method ie
public function createNavBar(source,type):void{
   switch(type)
    case "Dist":
     addStateBtn(source);
     addDistDrp(source);
     break;
    case "Block":
     addStateBtn(source);
     addDistDrp(source);
     addBlockDrp(source);
     break;
    default:
    addStateBtn(source);
and inside actionscript I have written
var objInf:ClsInf=new ClsInf()
var strType:String="Block";
objInf.createNavBar(myTargetId,strType);
so here how can I get the cmbDist combobox

How to create control dynamically while front panel fly using Xcontrol or anyothere options but without scripting tools

Hello friends
I have one doubt How to create control dynamically while front panel fly using Xcontrol or anyothere options but without scripting tools.I need to create the controls while vi is running.For example I need to create one Boolean while VI was Fly and i need one Examples it is easy to understand.
Jayavel

You must be using a different dictionary than the rest of us.
You can't dynamically create controls while a VI is running. (If I'm mistaken, then I'm sure someone else can jump in and say how it can be done.)
Do you have a finite number of controls you could possibly need? What you can do is create enough controls of the type you need ahead of time. At the beginning of your program, you hide all of those controls. As you need to create a control, you make it visible using property nodes. There are numerous properties you can set at run time suce as ranges, colors, captions, ... Of course you can't wire these controls to any other bits of code ahead of time since at that time, you haven't defined what you want each one to actually control. But if you use an event structure to detect when the values of the controls have changed, you can then programmatically pass the data off to other parts of your code using queues. The architecture can get complicate quite fast, so you may want to look through Ben's Action Engine Nugget and other related threads for how to create mechanisms for using these controls. Perhaps storing queue reference numbers or assign user events to each one.

Design Time and Dynamically Created Controls

I have a project written in VC6 as an MFC Dialog Box project. In a particular box, I dynamically create several (exact number depends on user entry) CNiGraphs. There are also a two CNiButtons that were created at design time using the resource editor. The problem I'm having is that when this dialog box is opened, a message pops up saying it's an eval version and the control will go inactive after 5 minutes. After waiting 5 minutes, the 2 CNiButtons go inactive (turn black), but the CNiGraphs continue to run. I have a valid licensed version of MStudio 8.1.6, but it appears that these 2 buttons don't recognize the license. There are also other design-time buttons in the project but those one's don't have a problem at all. When creating the dynamically creating the CNiGraphs I give them a valid license string, and I was wondering if there is a problem with having design time created and dynamically created controls in the same dialog box. Does anyone know?
I can't remember, but I may have created those 2 CNiButtons when I was only using an eval license. (All the other were definitely create when I had a full license) Could that be affecting them? I seem to have a vague recollection of reading somewhere that design-time create controls check the license when they are created in the designer and store that license info in them. If that's the case does anyone know an easy way to update the license stored in the control? I'd rather not just delete it and re-add it as I'd like to avoid having to redo the tab order (unless someone knows how to easily insert something in the middle of the tab order instead of having to click through all the controls in the correct order?)
Also, I'm not sure if this would affect anything, but the project was originally built with ComponentWorks 1.0, but we were forced to move to MStudio when we encountered some bugs in CW, so all the controls were originally CW Controls that have been converted to CNi Controls. I doubt this is it though as everywhere else we changed over the controls don't have a problem, but I'm willing to try suggestions.
Solved!
Go to Solution.

Hi JC,
I hope you had a good weekend! I am glad to hear you are back up and running. Adding the extra button was, in fact, what caused the updating of the license information for the other buttons, as you suspected. After doing further research, I have found that the license information is stored wtihin the form for the control, and unless that control changes in any way (or in your case adding a new one to the project), it does not see any reason upon compiling to relink the license. However, after changing the control and recompiling, it updates the linking of the license information, which resolved this issue in your case.
I hope this helps, JC. Have a great day!
Taylor G.
Product Support Engineer
National Instruments
www.ni.com/support

How to dynamically create sqlldr control file using stored procedure

I am trying to dynamically create the control file (.ctl) and execute the same using a stored procedure.I would be passing the file name as a parameter to this procedure. How do I go about doing this?
The control file has the following structure. The file name (mktg) varies and is passed as an input to the stored procedure.
SPOOL mktg.ctl
LOAD DATA
INFILE 'mktg.csv'
INTO TABLE staging
FIELDS TERMINATED BY ','
TRAILING NULLCOLS
(COMPANY_NAME,
ADDRESS,
CITY,
STATE,
ZIP)
SPOOL OFF ;
sqlldr scott/tiger CONTROL= mktg.ctl LOG=mktg.log BAD=mktg.bad

We are using oracle 9i rel 2.
I have not had much success with the creation of log and bad files using external tables when they are being used within a dynamic sql.
Plz check this:
Re: problems related to data loads from excel, CSV files into an oracle 9i db

How to add a table (dynamic created) into a model attribute

i have dynamically created an internal table. Generally i use model-binding in a stateful MVC-Application.
Is there a possibiltity to transfer the dynamic table to a model. As far as i know generic attributes are not allowed in the modell class.
Every hint welcome
thx in advance

By some miracle I do have this finally working. I will warn you up front that the code is not the cleanest (I have stuff copied in from all over the place. I probably have lots of unused variable references - but I am running out of time to clean it up further). Also I don't have all the logic to support all your different possible dynamic structure types. I always use SFLIGHT as my dyanmic structure. Therefore you will have to adapt the coding to lookup the actual structure type in use.
So I have a model that has an structure ITAB type ref to data. In my Model initialization I go ahead and dynamically redfine this to my specific type:
METHOD init.
SELECT SINGLE * FROM sflight INTO CORRESPONDING FIELDS OF isflight.
DATA: struct_type TYPE REF TO cl_abap_structdescr,
    tabletype TYPE REF TO cl_abap_tabledescr.
struct_type ?= cl_abap_structdescr=>describe_by_name( 'SFLIGHT' ).
CREATE DATA me->itab TYPE HANDLE struct_type.
ENDMETHOD.
Then in my View I have the following:
<%@page language="abap" %>
<%@extension name="htmlb" prefix="htmlb" %>
<%@extension name="phtmlb" prefix="phtmlb" %>
<%@extension name="bsp" prefix="bsp" %>
<htmlb:content design="design2003" >
<htmlb:page title=" " >
    <htmlb:form>
      <phtmlb:matrix width="100%" >
        <%
field-symbols: <wa> type any.
assign model->itab->* to <wa>.
* append initial line to <wa_itab> assigning <Wa>.
data: descriptor type ref to CL_ABAP_STRUCTDESCR.
descriptor ?= CL_ABAP_STRUCTDESCR=>describe_by_data( <wa> ).
data: flddescr type DDFIELDS.
flddescr = descriptor->GET_DDIC_FIELD_LIST( ).
field-symbols: <wa_field> like line of flddescr.
data: label type ref to cl_htmlb_label.
data: input type ref to CL_HTMLB_INPUTFIELD.
data: binding_string type string.
"Loop through each field in the structure Definition
loop at flddescr assigning <Wa_field>.
clear label.
clear input.
concatenate '//model/itab.'
<wa_field>-FIELDNAME
into binding_string.
label ?= cl_htmlb_label=>factory( _for = binding_string ).
input ?= cl_htmlb_inputfield=>factory( _value = binding_string ).
        %>
        <phtmlb:matrixCell row    = "+1"
                           vAlign = "TOP" />
        <bsp:bee bee="<%= label %>" />
        <phtmlb:matrixCell col    = "+1"
                           vAlign = "TOP" />
        <bsp:bee bee="<%= input %>" />
        <%
endloop.
        %>
      </phtmlb:matrix>
     <htmlb:button id="Test" onClick="Test" text="Submit"/>
    </htmlb:form>
</htmlb:page>
The key to making this work are custom getter/setters. In your model class, you can copy from the template methods (Like GETM_S_XYZ for the metadata structure method). Copy them and remove the _ on the front of the name. Then change XYZ to the name of the attribute you are binding for. The following are my custom methods.
method get_m_s_itab .
* uses ****************************************************************
* data ****************************************************************
* code ****************************************************************
* method is supposed to return either info about a specific component
* of a structure (component is not initial -> return ref to
* if_bsp_metadata_simple) or the complete structure
* (component is initial -> return ref to if_bsp_metadata_struct)
data: l_attribute_ref type ref to data,
           l_attr_ref type ref to data,
           l_exception     type ref to cx_root,
           l_ex            type ref to cx_sy_conversion_error,
           l_ex_bsp        type ref to cx_bsp_conversion_exception,
           l_ex2           type ref to cx_bsp_t100_exception,
           l_type          type i,
           l_index         type i,
           l_name          type string,
           l_component     type string,
           l_getter        type string.
data: l_field_ref     type ref to data,
        l_dfies_wa      type dfies,
        rtti            type ref to cl_abap_elemdescr.
data: crap type string,
          rest type string,
          t_index(10) type c.
split attribute_path at '[' into crap rest.
split rest           at ']' into t_index crap.
****Dummy Object to avoid dumps
create object metadata type cl_bsp_metadata_simple
    exporting info = l_dfies_wa.
call method if_bsp_model_util~disassemble_path
    exporting
      path      = attribute_path
    importing
      name      = l_name
      index     = l_index
      component = l_component
      type      = l_type.
data: l_dataref type string.
****Dynamically determine your actual structure - for this demo
****I just hardcode SFLIGHT
concatenate 'SFLIGHT-' l_component into l_dataref.
data: field type ref to data.
****Create a data object of the specified type
try.
      create data field type (l_dataref).
    catch cx_sy_create_data_error.
      exit.
endtry.
rtti ?= cl_abap_typedescr=>describe_by_data_ref( field ).
l_dfies_wa = rtti->get_ddic_field( ).
clear metadata.
create object metadata type cl_bsp_metadata_simple
    exporting info = l_dfies_wa.
endmethod.
method get_s_itab .
* uses ****************************************************************
* data ****************************************************************
* code ****************************************************************
* get the given value of the component of the struct, e.g.
* field-symbols: <l_comp> type any.
* assign component component of structure XYZ to <l_comp>.
* value = <l_comp>.
data: l_attr_ref type ref to data,
          l_field_ref type ref to data.
data: l_attribute_ref type ref to data,
        l_exception     type ref to cx_root,
        l_ex            type ref to cx_sy_conversion_error,
        l_ex2           type ref to cx_bsp_t100_exception,
        l_type          type i,
        l_index         type i,
        l_name          type string,
        l_component     type string,
        l_getter        type string,
        rtti            type ref to cl_abap_elemdescr.
field-symbols: <o_data> type any,
                 <n_data> type any.
*Test
call method if_bsp_model_util~disassemble_path
    exporting
      path      = attribute_path
    importing
      name      = l_name
      index     = l_index
      component = l_component
      type      = l_type.
* get a field reference for the assignment
field-symbols: <wa> type any,
                 <l_comp> type any.
assign me->itab->* to <wa>.
assign component l_component of structure <wa> to <l_comp>.
get reference of <l_comp> into l_field_ref.
****Dynamically determine your actual structure - for this demo
****I just hardcode SFLIGHT
data: l_dataref type string.
concatenate 'SFLIGHT-' l_component into l_dataref.
data: field type ref to data.
****Create a data object of the specified type
try.
      create data field type (l_dataref).
    catch cx_sy_create_data_error.
      exit.
endtry.
assign l_field_ref->* to <o_data>.
assign field->*       to <n_data>.
move <o_data> to <n_data>.
* call conversion routine
try.
      value = if_bsp_model_util~convert_to_string(
        data_ref           = field
        attribute_path     = attribute_path
        no_conversion_exit = 0 ).
    catch cx_sy_conversion_error into l_ex.
      me->errors->add_message_from_exception(
          condition = attribute_path
          exception = l_ex
          dummy     = value ).
    catch cx_bsp_t100_exception into l_ex2.
      me->errors->add_message_from_t100(
        condition = attribute_path
        msgid     = l_ex2->msgid
        msgno     = l_ex2->msgno
        msgty     = l_ex2->msgty
        p1        = l_ex2->msgv1
        p2        = l_ex2->msgv2
        p3        = l_ex2->msgv3
        p4        = l_ex2->msgv4
        dummy     = value ).
endtry.
endmethod.
method set_s_itab .
* uses ****************************************************************
* data ****************************************************************
* code ****************************************************************
* assign the given value to the component of the struct, e.g.
* field-symbols: <l_comp> type any.
* assign component component of structure XYZ to <l_comp>.
* <l_comp> = value.
data: l_attr_ref type ref to data,
           l_field_ref type ref to data.
data: l_attribute_ref type ref to data,
        l_exception     type ref to cx_root,
        l_ex            type ref to cx_sy_conversion_error,
        l_ex_bsp        type ref to cx_bsp_conversion_exception,
        l_ex2           type ref to cx_bsp_t100_exception,
        l_type          type i,
        l_index         type i,
        l_name          type string,
        l_component     type string,
        l_getter        type string,
        rtti            type ref to cl_abap_elemdescr.
field-symbols: <o_data> type any,
                 <n_data> type any.
*Test
call method if_bsp_model_util~disassemble_path
    exporting
      path      = attribute_path
    importing
      name      = l_name
      index     = l_index
      component = l_component
      type      = l_type.
* get a field reference for the assignment
field-symbols: <wa> type any,
                 <l_comp> type any.
assign me->itab->* to <wa>.
assign component l_component of structure <wa> to <l_comp>.
get reference of <l_comp> into l_field_ref.
****Dynamically determine your actual structure - for this demo
****I just hardcode SFLIGHT
data: l_dataref type string.
concatenate 'SFLIGHT-' l_component into l_dataref.
data: field type ref to data.
****Create a data object of the specified type
try.
      create data field type (l_dataref).
    catch cx_sy_create_data_error.
      exit.
endtry.
assign field->*       to <n_data>.
move <l_comp> to <n_data>.
* call conversion routine
try.
      if_bsp_model_util~convert_from_string(
                           data_ref           = field
                           value              = value
                           attribute_path     = attribute_path
                           use_bsp_exceptions = abap_true
                           no_conversion_exit = 0 ).
    catch cx_sy_conversion_error into l_ex.
      me->errors->add_message_from_exception(
          condition = attribute_path
          exception = l_ex
          dummy     = value ).
    catch cx_bsp_conversion_exception into l_ex_bsp.
      me->errors->add_message_from_exception(
          condition = attribute_path
          exception = l_ex_bsp
          dummy     = value ).
    catch cx_bsp_t100_exception into l_ex2.
      me->errors->add_message_from_t100(
        condition = attribute_path
        msgid     = l_ex2->msgid
        msgno     = l_ex2->msgno
        msgty     = l_ex2->msgty
        p1        = l_ex2->msgv1
        p2        = l_ex2->msgv2
        p3        = l_ex2->msgv3
        p4        = l_ex2->msgv4
        dummy     = value ).
endtry.
if <n_data> is initial.
    clear <l_comp>.
else.
    move <n_data> to <l_comp>.
endif.
endmethod.
I know that is a LOT of nasty code without too much explanation. I'm afriad there isn't time right now to expand on how it works too much. Between my day job and trying to finish the BSP book, there just isn't much time left. Like I said before there is a very large section in the book on this topic that hopefully explains it. The book will be out in December or early January - but perhaps I will get some time before then to write up something on SDN about this.

Is it possible to create controls dynamically.

Hai,
Is it possible to create control or arrays dynamically in LabVIEW.That means i want to create controls at run time depending on the dynamic data.
Please help me in this regard.

Ben wrote:
Christian's "Create Controls on the Fly"
Just for reference, Here's the original fly post. Makes it easier to find my old stuff.
(Of course there could be other interpretations of "on the fly": The 1971 album cover of "Sticky Fingers" but the Rolling stones comes to mind. )
LabVIEW Champion . Do more with less code and in less time .

How to create Dynamic Table Control

Hi
How to create Dynamic Table control , The field names and values to be displayed in table control are to be fetched from Add-on Tables.
Regards
Prasath

Hi Jonathan,
Actually the columns to be displayed are not constant . It will be increased based on the database values, Anyhow it will not exceed 100.
Please confirm my understanding.
1. In this case I have to create 100 custom columns and make it visible / invisible based on my requirement and I can set the title at runtime.
2. How can i assosicate / reassociate the datadictionary reference for the columns that i use. Because I need to show the search help values for the
dynamic columns.
Your opinion on this will be helpful.
Regards
Prasath

Creating a dynamic sqlldr control file

Hi,
I am in need of creating a dynamic sqlldr control file that will check the flat file, delimiter and load the data in a table. The table is having all the columns but the flat file can vary time to time.
looking forward for your valuable suggestions.
Regards
Rajib.

You may want to post more explicit requirements if you want sample code. For example, what the file looks like, what variations are allowed, what variations are disallowed, an example control file that would be output, etc. Specifying the precise language you're using (there are many different shell scripting languages) would also help.
In my experience, though, this sort of thing is almost always a one-off-- examples don't tend to be particularly helpful because every set of requirements tends to be very particular. If you have a full understanding of the requirements, and a decent understanding of your scripting language, I doubt it would take more than half a day to knock something together.
Justin

How to get the name of a duplicated control or created control and add a callback to it

Hi All,
Depending on how many input points I need, I am duplicating a numeric or string input with the DuplicateCtrl function. My question is, how do I get the name and id of the control that was just created, and how can i assign a callback to it? Alternately, would it be better to create a fresh ctrl instead of duplicating?
Thanks in advance!
Solved!
Go to Solution.

Hi TurboMetrologist,
why are you trying to get the control constant name? Keep in mind that you cannot use that name to address the control; control names are actually simply macros in the include file associated to the UIR, that is, the compiler preprocesses the code and wherever it finds PANEL_CONTROL names substitutes the corresponding numeric value as parameters to the functions (and consequently 'control' parameter is an int and not a char*)
That is why NewCtrl () or DuplicateCtrl () functions return a control ID: it is the handle to the new object, our only way to manipulate it. You will need to store this handle into a non-volatile memory so that you can access it durng program life.
Additionally, there are other ways to assign some particular meaning to a control than swiching on the control constant name. You could for example use the callbackData parameter to differentiate between different copies of a control.
Let me explain with an example. You told that you need several inputs (dynamically created as you don't know in advance how many of them to use); a clean solution could be to:
Design a master copy of one control in the UIR editor, where it is easy to customize it; assign also a callback function, if it has to be common to all copies of the control
Programmatically assign a callbackData value to that control, e.g. SetCtrlAttribute (..., ..., ATTR_CALLBACK_DATA, (void *)1);
Duplicate the control and then assign a different callbackData
for (i = 2; i < 5; i++) {
   handle = DuplicateCtrl (...);
   SetCtrlAttribute (..., handle, ATTR_CALLBACK_DATA, (void *)i);
By operating this way, every time the control callback is fired by any control it will receive the assigned callbackData, and you will be able to differentiate your code by a simple switch:
switch ((int)callbackData) {
   case 1:    // The master control
      break;
   case 2:    // The first duplicated control
      break;
Proud to use LW/CVI from 3.1 on.
My contributions to the Developer Zone Community
If I have helped you, why not giving me a kudos?

Is it possible to dynamically create form fields in PDF form?

Hi all,
I would like to dynamically create object like textbox, dropdown list from xml data. For example:
When I receive following xml data:
<field name="Check Box" type="selectbox"/>
<field name="Text Field" type="textbox"/>
I want to generate 2 form fields check box and text field with title "Check Box" and "Text Field" accordingly.
Is it possible to do it in javascript for PDF form?
Thank you and regards,
Anh

You cannot dynamically create objects on the fly like that but you can create interpret the XML and create an XDP file (which is the language of the template file) then bring that into Designer and create a PDF from that.
Paul

Passing variables from a dynamically created textinput in AS2?

Hey everyone,
I have a contact form in my flash file with name/email/message fields which a user can fill out and then click send, which passes these to a php script which then emails the information that they entered. This works fine when the text inputs are manually placed on the stage and all the information is passed to the php script and emailed to me. I am just updating it so the textinputs are created via AS2 so that I can style them more easily etc. This is fine however when created via script they no longer get passed to my php file. I am creating the textinput using the following code (which works fine):
var my_fmt:TextFormat = new TextFormat();
my_fmt.bold = false;
my_fmt.font = "Arial";
my_fmt.color = inputcol;
contact_form.createTextField("contact_name", getNextHighestDepth(),112.6, 27, 174, 20);
contact_form.contact_name.wordWrap = true;
contact_form.contact_name.multiline = false;
contact_form.contact_name.border = true;
contact_form.contact_name.borderColor = inputcol;
contact_form.contact_name.type = "input";
contact_form.contact_name.setNewTextFormat(my_fmt);
contact_form.contact_name.text = "";
FYI I am creating this outside the movieclip containing the form (called contact_form) and then adding it into that mc specifically because I thought this may be necessary as doing it within the mc itself (using this.createTextField....) didn't work, however both seem to have the same effect.
I am then doing various checks on the input box contents (to make sure it's not empty etc), this also works fine and gives me the relevant error if it is empty so it's accessing it correctly. I then use the following code to submit the variables and check_status checks the success/failure of the php script and alerts the user accordingly:
loadVariables("http://www.makeaportfolio.com/send_email.php?flashmo=" + random(1000), this, "POST");
message_status.text = "sending....";
var interval_id = setInterval(check_status, 400);
This works fine however does not pick up the value of the dynamically created text input (however does pick up all the text inputs that are manually added to the stage). I am rather confused as to why it's not picking this up and am not sure how I set it to do so, i would be immensely grateful if someone could point me in the right direction?
Thanks so much for your help as ever,
Dave

Hi kglad,
I'm sorry but i still don't understand what you mean? They are all text inputs which are defined in AS2 (you can see the code in my first post), the values (inputtext.text) are surely set by the user when they enter information into the input boxes. Accessing these works fine within my flash file, they just don't get passed to my php file. I got round this by manually creating duplicate textinputs on the stage for each dynamically created textinput which are all hidden, then assigning the values of the dynamically created inputs to the manually created inputs before loading the php file. This works fine as it picks up the manually placed inputs as local. I assume it's something to do with the scope of the dynamically created inputs but I cannot work out how you would ensure they would be picked up as even when you explicitly create them within the relevant mc it doesn't pick them up. As I say i've managed to get it working in a rather convoluted way which is good but would be most interested to understand why the other method doesn't work.
Thanks so much for your help,
Dave

Dynamically Create Repeater Element in ActionScript

Hi,
I'm trying to dynamically create a repeater control with an
image and a label control. I can do it directly in the MXML file
but when I try and covert it into ActionScript it's not working.
Can anyone see what the problem is with my code?
public function GetPalettes():void{
removeChild(document.FrontPage);
Palettes.method = "GET";
params = {"method": "GetPalettes", "BodyPartNo":
document.PalettesMenu.selectedItem.@partNo};
Palettes.cancel();
Palettes.send(params);
var VerticalBox:VBox = new VBox();
VerticalBox.x = 10;
VerticalBox.y = 10;
VerticalBox.id = "VerticalBox";
var PaletteRepeater:Repeater = new Repeater();
PaletteRepeater.dataProvider =
"{Palettes.lastResult.Palette}";
PaletteRepeater.startingIndex = 0;
PaletteRepeater.id = "PaletteRepeater";
var PaletteImage:Image = new Image();
PaletteImage.setStyle("HorizontalAlign", "left");
PaletteImage.source = "
http://localhost/Flex/Personalised%20Palettes-debug/{PaletteRepeater.currentItem.@PictureS rc}Med.png";
PaletteImage.useHandCursor = true;
PaletteImage.buttonMode = true;
PaletteImage.mouseChildren = false;
PaletteImage.id = "PaletteImage";
var PaletteDescription:Label = new Label();
PaletteDescription.text =
"{PaletteRepeater.currentItem.@Description}";
PaletteDescription.id = "PaletteDescription";
document.MainPage.addChild(VerticalBox);
VerticalBox.addChild(PaletteRepeater);
PaletteRepeater.addChild(PaletteImage);
PaletteRepeater.addChild(PaletteDescription);
Thanks

"katychapman85" <[email protected]> wrote in
message
news:[email protected]...
> Hey Amy,
>
> I've put a thread up about this but thought I'd ask you
as well as you've
> been
> a great help to me so far.
>
> I have this function:
> public function GetOptions(Menu:int):void{
> document.MenuOptions.url =
> "
http://localhost/Flex/Personalised%20Palettes-debug/MenuOptions.php?Menu=";
> document.MenuOptions.url += Menu;
> document.MenuOptions.send();
> }
>
> What I'm trying to do is when a user clicks on a Radio
button this
> function is
> called and the number of the Menu required is sent to
the function.
>
> I've added this Event Listener to my Radio Button:
>
>
document.RadioButtons2.addEventListener(MouseEvent.CLICK,
> function():void{GetOptions(2);});
>
> However, it's not working. Everything I've read suggests
using an
> anonymous
> function in the Event Listener to pass the menu
parameter but for some
> reason
> it's not working.
What version of Flex are you using? The Help for Flex 3 has
this to say:
http://www.adobe.com/livedocs/flex/3/html/help.html?content=events_05.html
Defining event listeners inline
The simplest method of defining event handlers in Flex
applications is to
point to a handler function in the component's MXML tag. To
do this, you add
any of the component's events as a tag attribute followed by
an ActionScript
statement or function call.
You add an event handler inline using the following syntax:
<mx:tag_name event_name="handler_function"/>
For example, to listen for a Button control's click event,
you add a
statement in the <mx:Button> tag's click attribute. If
you add a function,
you define that function in an ActionScript block. The
following example
defines the submitForm() function as the handler for the
Button control's
click event:
<mx:Script><![CDATA[
function submitForm():void {
// Do something.
]]></mx:Script>
<mx:Button label="Submit" click="submitForm();"/>
Event handlers can include any valid ActionScript code,
including code that
calls global functions or sets a component property to the
return value. The
following example calls the trace() global function:
<mx:Button label="Get Ver" click="trace('The button was
clicked');"/>
There is one special parameter that you can pass in an inline
event handler
definition: the event parameter. If you add the event keyword
as a
parameter, Flex passes the Event object and inside the
handler function, you
can then access all the properties of the Event object.
The following example passes the Event object to the
submitForm() handler
function and specifies it as type MouseEvent:
<?xml version="1.0"?>

<mx:Application xmlns:mx="
http://www.adobe.com/2006/mxml">
<mx:Script><![CDATA[
import mx.controls.Alert;
private function myEventHandler(event:MouseEvent):void {
// Do something with the MouseEvent object.
Alert.show("An event of type '" + event.type + "'
occurred.");
]]></mx:Script>
<mx:Button id="b1" label="Click Me"
click="myEventHandler(event)"/>
</mx:Application>
It is best practice to include the event keyword when you
define all inline
event listeners and to specify the most stringent Event
object type in the
resulting listener function (for example, specify MouseEvent
instead of
Event).
You can use the Event object to access a reference to the
target object (the
object that dispatched the event), the type of event (for
example, click),
or other relevant properties, such as the row number and
value in a
list-based control. You can also use the Event object to
access methods and
properties of the target component, or the component that
dispatched the
event.
Although you will most often pass the entire Event object to
an event
listener, you can just pass individual properties, as the
following example
shows:
<?xml version="1.0"?>

<mx:Application xmlns:mx="
http://www.adobe.com/2006/mxml">
<mx:Script><![CDATA[
import mx.controls.Alert;
private function myEventHandler(s:String):void {
Alert.show("Current Target: " + s);
]]></mx:Script>
<mx:Button id="b1" label="Click Me"
click="myEventHandler(event.currentTarget.id)"/>
</mx:Application>
Registering an event listener inline provides less
flexibility than using
the addEventListener() method to register event listeners.
The drawbacks are
that you cannot set the useCapture or priority properties on
the Event
object and that you cannot remove the listener once you add
it.
don't see anything in there about anonymous functions...?

Removing dynamically created movieclips

The following dynamically creates a set of movieclips that
I'm using instead of the list component. Each clip has an embedded
text field(txt) that displays the title of an RSS feed. I have
multiple RSS feeds that I want to load however, and when a seperate
button is clicked, I want to delete the above mentioned mc's so
that they can be replaced by new ones. I have tried loading the
values into an array, then clearing the array when the button is
clicked, but the mc's still remain.

I thought about my methods this morning at breakfast.
Eventually, the list will grow to a size too big for the
stage. I'm going to need a container so that I can scroll through
the items at some point.
I may as well add a listener to each button created that will
load a specific container to nest the lists. When a different
button is clicked I can simply use the removedChild(container) and
get rid of the movies in one fell swoop as opposed to identifying
each one for removal. The container can easily be controlled and
scrolled using its y value as well.
I have yet to work with this but I can think of an issue
already. If I register the container at the top, my dynamic mc
lists will start there, each with an increase in y value. The top
of that container will become the limit for scrolling upwards.
How will I note a y value to indicate the bottom of the lists
for scrolling purposes? Each button will load a container with a
unique amount of mc lists.

Bringing dynamically created controls into scope

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