Read and write(control should act as indicator and viceversa)

control(input) should act as indicator(output) and viceversa for a string transmission.is it possible
kudos welcome
Solved!
Go to Solution.

Yes you can. But property nodes are much slower than local variables. For simple programs, you won't notice the difference. But sooner or later, you will encounter a case where too many property nodes will noticeably slow down the code. It is considered bad programming style to use property nodes instead of local variables. Property Nodes work through the UI thread. Locals do not. So locals present a lot less overhead.
It is best to not get into a bad habit from the start. Use local variables instead of property nodes.
I do use local variables and think it is ok but there are the people on here that think they are the worst thing ever invented. Also it is not bad to show a couple of different way to do things so the OP can learn different ways to do things. Property nodes are something that you will inevitably have to learn if the OP wants to do real programming.
Tim
Johnson Controls
Holland Michigan

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Just bought a mac air with OS X v.10.7 Lion, for work I need to read and write NTFS drives, I install MacFuse and NTFS-3G, but it can not mount (recognize?) External HDD, in my MBP with Snow lepard it work just perfectly... help please.

Reinstall MacFuse with the one from http://www.tuxera.com/mac/macfuse-core-10.5-2.1.9.dmg. If that doesn't work, you can use Paragon NTFS for Mac 9.0 which has been designed to work with Lion.

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Sorry in my MBP Snow lepard it work.. don't have Lion In MBP

Using a control as both an indicator and control

Hello,
I have been search and reading for a few hours now and have finally decided to post. I fear I am not using the correct terms because I am fairly new at LabView.
I currently trying to build a user interface that uses 9 different tabs [I am using the same tab structure as in the labview example code]. There is a set of variables that will need to be on 3 of these tabs in similar form. These variables include:
2 boolean controls
1 boolean indicator
1 string indicator
12 numeric indicators
I would like to have all of these values be the same on the separate tabs at the same time.
For example if I press one of the boolean controls, that same boolean control should now be activated on the other tabs as well.
If it would be possible, please do point me in the right direction of how to go about doing this. (Also the proper terminology)
Many Thanks,
Buffalo960

tbob wrote:
I don't think you can have the same instance of controls and indicators on separate tabs. Two options:
1. Create separate controls on each tab. Put code such that if any control or indicator in the list is changed on any tab, the other similar ones get changed programatically. You can do this with an event structure and local variables or property nodes. Lots of programming.
I don't think that it will be a lot of programming. For example: if he has 5 controls and want to keep all of them synchronized, with only one Case of the Event Structure he can do the job, setting the 5 controls to trigger that Case when "Value Change" and use the Event Node "NewVal" to write the same value for all controls (including the control that triggered the event, but with a code this size it will not be a big deal to write the information a again to the same control).
Thanks
Dan07
Attachments:
Multiple Controls.vi ‏39 KB

I want to format my external drive so that my new imac and my pc can read and write ,what should i do?

i want to format my external drive so that my new imac and my pc can read

Start by partitioning the drive as required for the Mac:
Drive Partition and Format
1. Open Disk Utility in your Utilities folder.
2. After DU loads select your hard drive (this is the entry with the mfgr.'s ID and size) from the left side list. Click on the Partition tab in the DU main window.
3. Under the Volume Scheme heading set the number of partitions from the drop down menu to one. Click on the Options button, set the partition scheme to GUID then click on the OK button. Set the format type to Mac OS Extended (Journaled.) Click on the Apply button and wait until the process has completed.
4. Select the volume you just created (this is the sub-entry under the drive entry) from the left side list. Click on the Erase tab in the DU main window.
5. Set the format type to Mac OS Extended (Journaled.) Click on the Security button, check the button for Zero Data and click on OK to return to the Erase window.
6. Click on the Erase button. The format process can take up to several hours depending upon the drive size.
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I want to maximize front panel having tab control and tab control should be in centre programatically

i tried this using panel bounds property of front panel
using height width of tab tried to set position of tab
but if the reference 0,0 on front panel is changed the tab goes to out of sight
can any one help me in this regard
i want to use this for having different screens with different resolution
regards
Solved!
Go to Solution.

thank you robweaver
for your time and intrest
this solved my problem
regards

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https://discussions.apple.com/message/17670442#17670442
https://discussions.apple.com/thread/3909284
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My itunes will not open and says i should download it again and i have but it still wont open! what should i do?

My itunes wont open what do i do?

what's the precise text of your error message please, matti? (There's a few different ones I can think of that you might be getting.)

Arrays as both Indicator and Control

Is there anyway I can use an array (either a constant array or an array control) as both an indicator and control. I need this to enter and replace numeric values in an array.

> Pretty much yes, but I want to use the same array (control or
> constant) as both an indicator and a control. This way I can replace
> the array contents (which would be in a loop) and don't worry about my
> initial array and my final array being two different arrays. Can I use
> the local variable only for this?
As the earlier post stated, try using the local variable to update a
control from the diagram. You probably shouldn't place it inside the
loop, but use a shift register. Thus, take the value from the terminal,
into the left shift register. Inside the loop, take the left shift
register value, modify, and write to the right shift register. Outside
the loop again, wire from the right shift register to the local.
If you do no
t want to allow for user modification of the array control
during this, you can disable and reenable the array using a property node.
If you are not really doing this for UI, but to try and reuse memory,
then this is really the wrong approach. LV wires are really the most
efficient way of dealing with data, and you don't need to worry about
putting things back into an array unless it is for the UI. If it is to
pass out of a subVI, you will put them into a new array indicator in
fact, and when called as a subVI, this can often take no additional
memory, using the caller's array input throughout the diagram. If you
start using the local, this is no longer true, and you now have both
memory and runtime overhead. So use locals, and property nodes, only
for UI tasks, and your VIs will be much more efficient. For everything
else, use wires and shift registers.
Greg McKaskle

Dynamic screen and custom control

Hi,
I have to create a screen and custom control dynamically within a method and display alv grid. Is this possible?
regards,
Madhu

hi,
this is a smple program just try in this way.plz do reward points if it is of some use
data:obj type ref to zcl_test_alv.
parameter:p_mblnr type zbshd-mblnr.
start-of-selection.
set screen 100.
*&      Module STATUS_0100 OUTPUT
      text
module STATUS_0100 output.
SET PF-STATUS 'xxxxxxxx'.
SET TITLEBAR 'xxx'.
if obj is initial.
create object obj
exporting p_con = 'MATERIAL_DOC'.
endif.
CALL METHOD obj->get_data
    exporting p_mat = p_mblnr.
endmodule.                 " STATUS_0100 OUTPUT
The above is an executable program.
zcl_test_alv is a class which u need to create in se24 according to ur requirement
u need to define methods and attributes.
for example there are 3 methods
constructor
get_data
put_data
method GET_DATA.
SELECT mblnr
         mblpo
         matnr
         maktx
         meins
         menge
         waers
         dmbtr
         INTO corresponding fields of TABLE it_mm
         FROM zbsit
         WHERE mblnr = p_mat.
if sy-subrc = 0.
call method put_data.
endif.
endmethod.
method PUT_DATA.
DATA : it_fldcat TYPE lvc_t_fcat.
DATA : wa_fldcat LIKE LINE OF it_fldcat.
DATA : it_sort TYPE lvc_t_sort,
         wa_sort LIKE LINE OF it_sort.
CALL FUNCTION 'LVC_FIELDCATALOG_MERGE'
EXPORTING
I_BUFFER_ACTIVE              =
   I_STRUCTURE_NAME             = 'ZBMDC'
I_CLIENT_NEVER_DISPLAY       = 'X'
I_BYPASSING_BUFFER           =
I_INTERNAL_TABNAME           = 'ZBSIT'
CHANGING
    ct_fieldcat                  = it_fldcat[]
EXCEPTIONS
INCONSISTENT_INTERFACE       = 1
PROGRAM_ERROR                = 2
OTHERS                       = 3
IF sy-subrc <> 0.
MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
        WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
EXIT.
ELSE.
    LOOP AT it_fldcat INTO wa_fldcat.
      CASE wa_fldcat-fieldname.
        WHEN 'MBLNR'.
          wa_fldcat-reptext   = 'Material Doc no'.
        WHEN 'MBLPO'.
          wa_fldcat-reptext   = 'Item Material Doc'.
          wa_fldcat-ref_table = 'X'.
        WHEN 'MATNR'.
          wa_fldcat-reptext   = 'Material No'.
          wa_fldcat-ref_table = 'X'.
        WHEN 'MAKTX'.
          wa_fldcat-reptext   = 'Description'.
          wa_fldcat-do_sum    = 'X'.
        WHEN 'MEINS'.
          wa_fldcat-reptext   = 'UOM'.
          wa_fldcat-do_sum    = 'X'.
        WHEN 'MENGE'.
          wa_fldcat-reptext   = 'QUAN'.
          wa_fldcat-do_sum    = 'X'.
        WHEN 'WAERS'.
          wa_fldcat-reptext   = 'CurrKey'.
          wa_fldcat-do_sum    = 'X'.
        WHEN 'DMBTR'.
          wa_fldcat-reptext   = 'curr'.
          wa_fldcat-do_sum    = 'X'.
      ENDCASE.
      MODIFY it_fldcat FROM wa_fldcat INDEX sy-tabix.
    ENDLOOP.
    wa_sort-fieldname = 'MBLNR'.
    wa_sort-up        = 'X'.
    wa_sort-subtot    = 'X'.
    APPEND wa_sort TO it_sort.
ENDIF.
CALL METHOD o_grid->set_table_for_first_display
EXPORTING
   i_buffer_active               =
   i_bypassing_buffer            =
   i_consistency_check           =
   i_structure_name              =
   is_variant                    =
   i_save                        =
   i_default                     = 'x'
   is_layout                     =
   is_print                      =
   it_special_groups             =
   it_toolbar_excluding          =
   it_hyperlink                  =
   it_alv_graphics               =
   it_except_qinfo               =
   ir_salv_adapter               =
CHANGING
    it_outtab                     = it_mm[]
    it_fieldcatalog               = it_fldcat[]
    it_sort                       = it_sort
   it_filter                     =
EXCEPTIONS
   invalid_parameter_combination = 1
   program_error                 = 2
   too_many_lines                = 3
   others                        = 4
IF sy-subrc <> 0.
MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
           WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
endmethod.
method CONSTRUCTOR.
CREATE OBJECT o_con
    EXPORTING
       container_name      = p_con .
IF sy-subrc = 0.
    CREATE OBJECT o_grid
      EXPORTING
         i_parent          = o_con .
ENDIF.
endmethod.
Attributes are
o_con type ref to CL_GUI_CUSTOM_CONTAINER
o_grid type ref to CL_GUI_ALV_GRID
it_mm type zmdoc
to get alv grid ,in layout editor u need to create custom control
for constructor method u should have a parameter p_con with default value as 'MATERIAL_DOC'
Im just explaining the above program use this as reference and try.

How to use single element as both control as well as indicator in labview

Hi All,
I need to use single element for both control and as an indicator.
I need not want to use its value property os shift register.

Hi pmg,
I think this thread will be helpful to you.
http://forums.ni.com/t5/LabVIEW/Using-a-control-as-both-an-indicator-and-control/td-p/1113158
Thanks as kudos only

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Calling BSP from report and return control back ?

Hi All,
      My requirement is as follows :-
1. I am calling a BSP from report using CL_GUI_HTML_VIEWER->show_url. The BSP page is displayed successfully.
2. Then, I perform some operations and want to return some data back to the main program (from where it was called - Report) and continue execution from there
How do I accomplish the second requirement (Control doesnt come back once I close the BSP) ?
Regards,
Ashish

how to generate events from html code in the html control back to your ABAP check out this demo program
SAPHTML_EVENTS_DEMO
say for example, in your case you are showing the BSP in GUI HTML control and on clicking a link you want to pass some data from your link to ABAP program and the ABAP should receive the value and process it and may be comeback to same BSP or go some to some other screen/transaction.
steps to follow:
after creating the html control
register event for call back and call the BSP url.
create object hviewer
             exporting
               parent = mycont.
    myevent-eventid = hviewer->m_id_sapevent.
    myevent-appl_event = 'x'.
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      exporting
        events = myevent_tab.
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                for hviewer.
    hviewer->enable_sapsso(
      exporting
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      exceptions
        cntl_error = 1
        others     = 2
    if sy-subrc <> 0.
    endif.
    call method hviewer->show_url
      exporting
        url = wf_url.
in your BSP the link should look like below
A HREF=SAPEVENT:TAGS?value to be passed to your ABAP> link text </a
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link is just one option, you can also send whole form data.
this type of link and form will only work when your BSP is invoked within HTML contro. if its invoked from standalone browser these wont work. so you amy want to dynamically show/hide "sapevent" links based on where it runs.
Hope this is clear. if not do getback.
Regards
Raja
Edited by: Durairaj Athavan Raja on Sep 9, 2008 1:04 PM

When updating get a message that reads the disk could not read or write -

i downloaded several songs from cd (only some cd do not update )- all loaded up well in i tunes - but when i update - i get a message on the i tunes screen "attempting to copy to the disk david i pod faults - the disk could not read or write- i reinstalled the updated software and i tones software and same problem - only some cd will not update - but they are diffinately in itunes- i can play them on my computer
nano Windows XP Pro

Hi daf,
Try this Your Windows PC doesn't recognize iPod
Happy New Year
Colin R.

Read and write(control should act as indicator and viceversa)

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