Hi Christof,
I now tried with other graphic atabtors. The problem is reproducable.
My testform has a label with the strange behavior, a textbox
and a command buttom with the following code in the click event:
thisform.lockscreen=.T.
thisform.refresh
thisform.lockscreen=.F.
after several refreshes the caption of the label fades out. When the textbox is removed, the appearance of the label does not change. The problem occurs with textboxes,grids (also empty grids with columncount -1),checkboxes no matter if disabled or enabled. Seems to me like a bug!