Control GUI controls and indicators from a Code Interface Node (CIN)

[arnold_w]

I am writing a test application that will contain quite a few GUI controls and indicators and I don't think it is feasible to control the GUI in pure LabVIEW code so I decided to use a Code Interface Node instead. The picture below shows what I'm trying to do (this is just a small sub-set of my large test application):

 

My C-code basically looks like this (download the project and extract the source code if you're interested in the implementation details):

typedef struct {

      LStrHandle Textbox;

      LVBoolean RadioButton;

      LVBoolean PushButton;

      LVBoolean StatusLED;

      TD2Hdl StatusLEDColor;

      } TD1;

int counter = 0;

MgErr CINRun(TD1 *GUIClusterIn)

{

  counter++;

  if ((counter & 1) == 1)

  {

    setColor(GUIClusterIn->StatusLEDColor, RED);

    populateString(GUIClusterIn->Textbox, "Odd number of button presses");

    GUIClusterIn->RadioButton = 1;

  }

  else

  {

    setColor(GUIClusterIn->StatusLEDColor, GREEN);

    populateString(GUIClusterIn->Textbox, "Even number of button presses");

    GUIClusterIn->RadioButton = 0;

  }

  return noErr;

}

Whenever I push the Push Button, I would expect the GUI to be updated, but that is not the case. If a put a break point and a probe immediately after my Code Interface Node, I can see that the values have been changed as I would like them to and I therefore feel confident that the Code Interface Node works as it should. The complete project is attached. Any hints would be greatly appreciated.

[cosmin]

hi,

maybe you should move the write gui part in the while loop

cosmin

Message Edited by cosmin on 09-23-2007 08:00 AM

[arnold_w]

Ok, thanks!

[parthabe]

Related post I think...

http://forums.ni.com/ni/board/message?board.id=170&message.id=273662#M273662