BCGControlBar Pro for MFC
BOOL CBCGPToolbarDateTimeCtrl::m_bThemedDateTimeControl

This global flag specifies whether encapsulated date/time control has a themed (Visual manager-based) look.

By default, the encapsulated date/time picker is a standard Windows control (CDateTimeCtrl) and doesn't support the application theme. Set this member to TRUE somewhere at the application startup (e.g., in your application class constructor) and themed CBCGPDateTimeCtrl will be used instead.