[Overview][Constants][Types][Classes][Procedures and functions][Index] | Reference for unit 'EditBtn' (#lcl)

# TDateEdit.OnDateRangeCheck

Event handler signalled prior to validating and range checking a date value.

## Declaration

Source position: editbtn.pas line 647

`published property TDateEdit.OnDateRangeCheck : TDateRangeCheckEvent read FOnDateRangeCheck write FOnDateRangeCheck;`

## Description

OnDateRangeCheck is a TDateRangeCheckEvent with the event handler signalled prior to validating and range checking a date value. It allows the application to perform actions needed before a date value is potentially updated. An application can implement and assign a routine to the handler which responds to the event notification.

OnDateRangeCheck is signalled (when assigned) from the DoDateRangeCheck method. It occurs when a new value is assigned to either the MinDate or MaxDate property, and when ButtonClick is called to display the pop-up calendar for the control.

## See also

TDateEdit.Date |  | Contains the TDateTime value for the control.
TDateEdit.MinDate |  | Smallest date value allowed in the date edit control.
TDateEdit.MaxDate |  | Largest date value allowed in the date edit control.
TDateEdit.DoDateRangeCheck |  | Signals the OnDateRangeCheck event handler (when assigned).
TDateEdit.ButtonClick |  | Displays a pop-up calendar dialog when the Button for the grouped edit control is clicked.
TDateRangeCheckEvent |  | Specifies an event handler signalled prior to validating a date for it lower and upper limits.