GtkCalendar::select_month

This method determines the month and year displayed on opening. The default setting is the current month and year, taken from the operating system.

If the display option flag GTK_CALENDAR_NO_MONTH_CHANGE is set, the user will be unable to switch from the month and year passed as parameters.

Note that the month must be in the range 0 to 11, similar to PHP's date('m'). The year is in 4-digit format, as in 2002 the format returned by date('Y').