I have a long action which may be initiated via click on a button or pressing "Enter" in ComboBox and the following code is run.

thisform.MousePointer = 11
my_long_calculation()
thisform.MousePointer = 0

The problem is that after pressing "Enter" in combobox regardless where I put this code ( keypress, valid , lostfocus or even timer event ) I can't achieve hourglass mouse pointer , it just disappears.
No problem whatsoever with "Click" event for button.

TIA
Michael