BCGControlBar Pro for MFC
void CBCGPPlannerManagerCtrl::SetFirstDayOfWeek ( int  nDay,
BOOL  bPlanner = FALSE 

Sets the first day of week.

Use this method to set the value of first day of week. The value can be in inclusive interval 0-6, where 0 corresponds to Sunday, 6 corresponds to Saturday.

nDayThe new first day of week.
bPlannerSpecifies whether the planner week start should be adjusted.