Problem of list box update

Martin,

I thought that using one of hiFlush() or hiUpdate() might fix this, but it doesn't need to.

Assuming that the slow operation is a result of using ipcBeginProcess() - based on your previous question - could you change your ipcBeginProcess() to provide data and exit callbacks and hence work asynchronously? Then the code wouldn't need to block, and the UI could complete...

Here's an example. Put this in a file with a .ils suffix :

;------------------------------------------------------------------------
; This needs to be in a file with .ils suffix to ensure that
; the local functions used within ForumShowListBox work
;------------------------------------------------------------------------

procedure(ForumListBox()
  let((listbox)
    listbox=hiCreateListBoxField(
      ?name 'listBox
      ?choices nil
    )
    hiCreateLayoutForm(
      'ForumLBForm
      "List Box Form"
      hiCreateFormLayout(
        'formLayout
        ?items list(listbox)
      )
    )
  )
)

procedure(ForumShowListBox()
  let((cid (allFiles "") form)
    ;--------------------------------------------------------------------
    ; Collect all output from the command
    ;--------------------------------------------------------------------
    procedure(dataHandler(id data)
      allFiles=strcat(allFiles data)
    )
    ;--------------------------------------------------------------------
    ; When finished, update the form
    ;--------------------------------------------------------------------
    procedure(exitHandler(id status)
      form->listBox->choices=parseString(allFiles)
    )
    form=ForumListBox()
    hiDisplayForm(form)
    form->listBox->choices='("Searching...")
    cid=ipcBeginProcess("sleep 4; /bin/ls -1 /bin/" "" dataHandler "" exitHandler)
  )
)

Then call ForumShowListBox()

Andrew

Hi, Andrew,

I've saved the above code into a .ils file and load it. But when I run it with ForumShowListBox(), it stoped there with "Searching..." in the List Box.

Two break points are added in Skill IDE window and the code is reloaded. After that, I run ForumShowListBox() again. The program stops at "Searching..." again and not stop at any break points. It seems the dataHandler() and exitHandler() functions are not accessed by ipcBeginProcess() function.

Please help. Thanks.

Martin

Martin,

That's odd. I can't think what this would be - I've tried various mechanisms I can think of to make it fail, and it always works for me.

Can you submit a support case at http://support.cadence.com and ask for the AE to contact me (I'd like to take the case) - reference this forum post. Then we can take a look together.

Andrew

Hi, Andrew,

When I run your code on another computor, it works well. So there may have some environment problem. Your code is good! Thanks!

Martin

Hi, Andrew,

When I run your code on another computor, it works well. So there may have some environment problem. Your code is good! Thanks!

Martin