Check if 2 dates are in the same month.
Source position: dateutil.inc line 136
| function IsSameMonth( | 
| const Avalue: TDateTime; | 
| const ABasis: TDateTime | 
| ):Boolean; | 
IsSameMonth will return True if the two dates Avalue and ABasis occur in the same year and month. (i.e. if their month and year parts match). Otherwise, False is returned.
| 
 | Check if two date/time indications are the same day. | |
| 
 | Check whether a given date is today. | |
| 
 | Check whether two TDateTime values have the same date part. |