#import "MyObject.h" 

@implementation  MyObject

- ( IBAction )myAction:( id )sender
{
NSDate *theDate = [myDatePicker dateValue];
[myTextField setStringValue:[theDate description]];

[myDatePicker setDatePickerStyle:NSClockAndCalendarDatePickerStyle];
NSDatePickerStyle mode = [myDatePicker datePickerStyle];

switch  (mode) {
case  NSTextFieldAndStepperDatePickerStyle:
NSLog( @"NSTextFieldAndStepperDatePickerStyle" );
break ;
case  NSClockAndCalendarDatePickerStyle:
NSLog( @"NSClockAndCalendarDatePickerStyle" );
break ;
default :
NSLog( @"default" );
break ;
}

}

@end