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  • Range selection
  • Modifying a period in a Calendar, Organizer or Scheduler control
  • Special cases
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Stored procedures
The Property StartDate allows you to know and modify the start date of the selected period:
  • in a Calendar control.
  • WINDEVWindows in an Organizer control.
  • WINDEVWindows in a Scheduler control.
Versions 18 and later
WINDEVLinux This property is now available for WINDEV applications in Linux.
New in version 18
WINDEVLinux This property is now available for WINDEV applications in Linux.
WINDEVLinux This property is now available for WINDEV applications in Linux.
Versions 21 and later
Universal Windows 10 App This property is now available in Universal Windows 10 App mode.
New in version 21
Universal Windows 10 App This property is now available in Universal Windows 10 App mode.
Universal Windows 10 App This property is now available in Universal Windows 10 App mode.
Example
// Retrieve the selected period (Calendar control)
NbDays is int
NbDays = DateDifférence(CAL_Calendar1.StartDate, ...
CAL_Calendar1.EndDate) + 1
Info("Selected period: from " + ...
DateToString(CAL_Calendar1.StartDate) + ...
" to " + DateToString(CAL_Calendar1.EndDate) + ...
" which means " + NbDays + " days")
Syntax

Finding out the start date of the period Hide the details

<Start date> = <Control used>.StartDate
<Start date>: Character string or Date variable
  • Start date of the period selected in the control.
    • In a Calendar control, this date is in "YYYYMMDD" format.
    • WINDEVWindows In an Organizer control or Planning, this date is in "YYYYMMDDHHmmSSCCC" format.
  • Date of the selected day if a day is selected,
  • Empty string ("") if no day is selected.
<Control used>: Control name
Name of control used:
  • Calendar control,
  • WINDEVWindows Organizer control.
  • WINDEVWindows Scheduler control.

Modifying the start date of the period Hide the details

<Control used>.StartDate = <New date>
<Control used>: Control name
Name of control used:
  • Calendar control,
  • WINDEVWindows Organizer control.
  • WINDEVWindows Scheduler control.
<New date>: Character string or Date variable
Start date of the period to select in the control.
  • In a Calendar control, this date is in "YYYYMMDD" format.
  • WINDEVWindows In an Organizer control or Planning, this date is in "YYYYMMDDHHmmSSCCC" format.
Remarks

Range selection

To select a period :
  • in a Calendar control, " Range selection" must be selected in the "Details" tab.
  • WINDEVWindows in an Organizer control, the option "Allow time range selection" must be selected in the "Details" tab.
  • WINDEVWindows in a Scheduler control, the option "Allow time range selection" must be selected in the "Details" tab.

Modifying a period in a Calendar, Organizer or Scheduler control

To change the start date of a selected period, it is necessary to specify the start date (Property StartDate) and the end date of the period (Property EndDate).. Indeed, the modification of the start date:
  • automatically deselects the end date.
  • waits for the end date to be selected (by programming or via a click on a control date).
To modify the end date of a selected period, all you have to do is use EndDate: the period is automatically modified.

Special cases

  • The end date of a period is returned and modified by EndDate.
  • Property StartDate returns the start date of the period in chronological order. Therefore, if the end date was selected before the start date, ..StartDate will return the last date that was selected.
Minimum version required
  • Version 14
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