Hi, Denis!

>>
After adding a large number (c. 2000) of labels
<<

I think that's a hard job to VFP <s>!

Two ideas:
1st: What about creating a separate EXE for this form (like a SDI form) if the user press the forms close button processe only

ON ERROR
ON SHUTDOWN
QUIT

2nd: If the user press the close button - make the form only invisible!