xlldate.h contains some global functions that access Excel's native date functionality.
The table below lists the principal functions declared in the header file.
| Function | Description |
|---|---|
| XlSerialToDate | Transform an Excel serial date to year, month and day. |
| XlDateToSerial | Transform year, month and day to an Excel serial date. |
| XlLSerialToDate | Transform an integer Excel serial date to year, month and day. |
| XlDateToLSerial | Transform year, month and day to an Excel serial date. |
| XlStringToDate | Transform a string to year, month and day. |
| XlStringToSerial | Transform a string to a serial date. |
| XlStringToLSerial | Transform a string to a serial date. |
| XlToday | Get today's date. |
| XlNow | Get the current time. |
| XlWeekday | Convert a date to a day of the week. |
A full list can be found here.