CommonControls (Replacement of the MS common controls)

[SuperDre]

Yes, so it seems, despite of MS online documentation.
https://msdn.microsoft.com/en-us/lib...(v=vs.60).aspx

Fiddled with some calendar dates. There is a bug in week numbering display (week 53 vs. 1) also, altought this is corect in MS component.

fex. 29/12/2003 is week 1 not 53.
Attachment in left is MS common control-2 SP6 version MSCOMCT2.OCX and in right replacement control.

Yep, you're right, 2004 has 53 weeks, maybe it's because some internal weekday setting (which day of the week is the first day, normally it should be set to monday)..