I try to use a datetimepicker class from UT latest downloads
(file commctrl.zip) to display week numbers and to allow multiple
selection of dates.
According to MS KB Docs, I changed a style parameter of CreateWindowEx function in the
datetimepicker class recreate method .

My code is

	.hWnd = CreateWindowEx( WS_EX_NOPARENTNOTIFY, DATETIMEPICK_CLASS, "DateTimePicker", ;
			BitOr( m.lnStyle, WS_CHILD, MCS_WEEKNUMBERS, MCS_MULTISELECT), ;
			m.lnLeft, ;
			m.lnTop, ;
			m.lnWidth, ;
			m.lnHeight, ;
			.hWndParent, ;
			0, ;
			.nParentInstance, ;
			0)

Unfortunately, the week numbers are not displayed and multi seletion is not
allowed. Why ?

Original code was:

	.hWnd = CreateWindowEx( WS_EX_NOPARENTNOTIFY, DATETIMEPICK_CLASS, "DateTimePicker", ;
			BitOr( m.lnStyle, WS_CHILD), ;
			m.lnLeft, ;
			m.lnTop, ;
			m.lnWidth, ;
			m.lnHeight, ;
			.hWndParent, ;
			0, ;
			.nParentInstance, ;
			0)