How to lock the cell placement

 Hi Jazzmatazz,

The function is doing what it is documented to do:

lxHiUnlockSelected( 
g_all
 )
     => t | nil


Changes the placement status of the selected objects from locked, placed, or firm to unplaced.
If the original placement status is unknown or unplaced, this command does not change it. 

What you can do, however, is to set the "status" attribute of the cell(s) to 'nil' and this is displayed as "none" in the Edit Instance Properties form.  So, use SKILL to iterate over the instances and set the "status" attribute of each one, something like the following assuming they are selected:

  geGetSelectedSet()~>status = nil
=> (nil nil nil nil)

 In this example I selected 4 instances.

Hope this helps.

Lawrence.

Hi Derek,

Firstly, thank you for your post. But when i try to apply your skill code i get still this error message in CIW:

*Error* return: return can only be used within a prog

*WARNING* (GE-2042): An unexpected error occurred while applying MySelectionLockFunction SKILL function.

The reported error is : nil.

(db:0x14a5841a)

I assign the MySelectionLockProperty to instance and then I call "selection.il" from CIW where the code is saved. I really dont know where the mistake can be hidden. Please can you give me an advice? Thank you very much

 Martin 

Martin,

Derek's code has a missing prog, and should not be calling return as is. It should be:

procedure(myFilterFunction(obj)
  prog(()
    if(obj~>objType == "inst" && obj~>myFixedProperty then
        return()
    else
        return(t)
    )
  )
)

or:

procedure(myFilterFunction(obj)
    if(obj~>objType == "inst" && obj~>myFixedProperty then
        nil
    else
        t
    )
)

If using IC615 or IC616, there's the built-in "selection protection" which can be found under Edit->Select->Set Selection Protection in the layout editor. If using an older version, you could use my prototype of the same functionality which can be found in solution 11522924. My code uses a similar approach to Derek, but is just packaged up with a set of functions to highlight the "protected" objects, to override the protection, and so on. 

Regards,

Andrew.