Set

SET SYSFORMATS ON

in Visual FoxPro


In Windows Control Panel / Regional Settings

set date format to

yy/dd/mm


After this setting, many vfp date commands will stop working properly.

For example,

?ctod(dtoc(date()))=date()

returns .f.


Also, date in textbox control will appear differently when it has focus and when it doesnt have focus.

So, single control panel setting change will stop many VFP programs
working properly.