Handling a Scheduler control through programming (prefix syntax)

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Overview
Handling the Scheduler control through programming
Adding a resource
Adding an appointment
Populating a Scheduler control with the data from an HFSQL data file
Retrieving a list of appointments
Displaying the schedule from a specific resource or from a specific date
Deleting an appointment
Deleting a resource
Modifying the display of the control
Handling an appointment through programming
Using the popup menu (AAF)
Advanced use of events associated with the Scheduler control
Advanced use of events with procedure
Managing public holidays
Properties specific to Scheduler controls

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Handling a Scheduler control through programming (prefix syntax)

Overview

A Scheduler control can be:

handled through programming.
linked to a data file.
bound to a variable.

To handle a Scheduler control through programming, WINDEV and WEBDEV propose the SchedulerXXX functions.

This help page explains how to handle a Scheduler control through programming. The following example is used to store appointments in an HFSQL database. Remark: From version 19, HFSQL is the new name of HyperFileSQL.

Versions 21 and later

Scheduler controls are available for Android applications.

Scheduler controls are available for iPhone/iPad applications.

New in version 21

Scheduler controls are available for Android applications.

Scheduler controls are available for iPhone/iPad applications.

Scheduler controls are available for Android applications.

Scheduler controls are available for iPhone/iPad applications.

Handling the Scheduler control through programming

Adding a resource

Adding a resource into a Scheduler control is performed by <Scheduler>.AddResource. This resource can correspond to a person, a room, ...

Example:

// Adds resources into a Scheduler control
SCH_Schedule1.AddResource("Florence" + gStoredValue("FL"))
SCH_Schedule1.AddResource("Emma" + gStoredValue("EM"))
SCH_Schedule1.AddResource("Fred" + gStoredValue("FR"))

In this example, gStoredValue is used to propose a displayed resource ("Florence", for example) and a resource handled through programming ("FL", for example).

Remark: <Scheduler>.AddResource is used to insert an image into the title of the resource.

Adding an appointment

Adding an appointment into a Scheduler control is performed by <Scheduler>.AddAppointment. This function accepts two syntaxes:

syntax used to specify the appointment characteristics: title, description, ...
Example:

// Adds a 1-hour appointment for tonight
MyResource is string
MyTitle is string
StartAPT is DateTime

MyResource = "Vince"
MyTitle = "Sales meeting"
StartAPT = DateSys() + "17000000"

SCH_Scheduler.AddAppointment(MyResource, MyTitle, StartAPT)
syntax that handles a variable of type Appointment.
Example:

// Declares an Appointment variable
MyAppointment is Appointment

// Fills the appointment
MyAppointment.Title = "Sales meeting"
MyAppointment.Content = "Meeting to discuss the weekly objectives."
MyAppointment.StartDate = "201003220845"
MyAppointment.EndDate = "201003221230"
MyAppointment.Category = "Sales"
MyAppointment.ID = 1

// Adds the appointment into the control
SCH_Scheduler.AddAppointment(MyAppointment)

The BackgroundColor property of the Appointment variable is used to define a display color for an appointment. If no background color is defined, the Scheduler control will automatically use the color associated with the category of the appointment.

Populating a Scheduler control with the data from an HFSQL data file

The records are stored in an HFSQL file. The initial fill of the Scheduler control can be done by browsing the data file via the FOR EACH syntax and by adding each appointment via <Scheduler>.AddAppointment.

// Appointment variable
MyAppointment is Appointment

// Browse the appointments stored in database
FOR EACH APT
// Fills the information of the variable
MyAppointment.Title = APT.Title
MyAppointment.Content = APT.Content
MyAppointment.StartDate = APT.StartDate
MyAppointment.EndDate = APT.EndDate
MyAppointment.Category = APT.Category
MyAppointment.ID = APT.APTID

// Adds the appointment into the Scheduler control
SCH_MyScheduler.Appointment(MyAppointment)
END

Retrieving a list of appointments

<Scheduler>.ListAppointment is used to get:

the list of all the appointments found in the Scheduler control.
For example:

// Array containing a list of Appointment
arrAppointmentList is array of Appointment

// Lists of appointments
arrAppointmentList = SCH_MyScheduler.ListAppointment()
the list of appointments for a resource included between two dates.
For example:

// List of appointments for January 2020
arrAppointmentList is array of Appointment

// Lists of appointments
arrAppointmentList = SCH_MyScheduler.ListAppointment(MyResource, ...
"20200101", "20200131")
the appointment currently selected or hovered.
For example:

// Selected appointment
arrAppointmentList is array of Appointment

arrAppointmentList = SCH_MyScheduler.ListAppointment(schAptSelected)

Versions 17 and later

Displaying the schedule from a specific resource or from a specific date

To display the Scheduler control from:

a specific resource, use <Scheduler>.PositionResource.
For example:

SCH_NoName1.AddAppointment("ABC room", "APT 1", ...
DateSys() + "14000", DateSys() + "16000")
SCH_NoName1.PositionResource("ABC room")
from a specific date, use <Scheduler>.PositionDateTime.
For example:

// Positions the schedule on today's date
SCH_Schedule.PositionDateTime(Today())

New in version 17

Displaying the schedule from a specific resource or from a specific date

To display the Scheduler control from:

a specific resource, use <Scheduler>.PositionResource.
For example:

SCH_NoName1.AddAppointment("ABC room", "APT 1", ...
DateSys() + "14000", DateSys() + "16000")
SCH_NoName1.PositionResource("ABC room")
from a specific date, use <Scheduler>.PositionDateTime.
For example:

// Positions the schedule on today's date
SCH_Schedule.PositionDateTime(Today())

Displaying the schedule from a specific resource or from a specific date

To display the Scheduler control from:

a specific resource, use <Scheduler>.PositionResource.
For example:

SCH_NoName1.AddAppointment("ABC room", "APT 1", ...
DateSys() + "14000", DateSys() + "16000")
SCH_NoName1.PositionResource("ABC room")
from a specific date, use <Scheduler>.PositionDateTime.
For example:

// Positions the schedule on today's date
SCH_Schedule.PositionDateTime(Today())

Deleting an appointment

<Scheduler>.DeleteAppointment is used to delete:

the appointment selected in the control.
a specific appointment.

// Deletes the first appointment
SCH_MyScheduler.DeleteAppointment(1)

Deleting a resource

<Scheduler>.DeleteResource is used to delete a resource from the Scheduler control.

// Deletes one of the resources
ResDel is boolean
ResDel = SCH_Scheduler1.DeleteResource("Flo")
IF ResDel = True THEN
Info("Resource deleted")
END

<Scheduler>.DeleteAll deletes all the appointments from the Scheduler control as well as all its resources.

Modifying the display of the control

The current display of a Scheduler control can be modified via the following functions:

<Scheduler>.DisplayPreviousPeriod and <Scheduler>.DisplayNextPeriod: These two functions are used to modify the display period (same as using the spin button found at the top of the Scheduler control).
<Scheduler>.ChangeMode: This function is used to modify the display mode of control: day, week, month.
<Scheduler>.TimeDisplayed: This function is used to define the time period displayed.

Handling an appointment through programming

You have the ability to handle an appointment by programming:

by using the index of the appointment to modify.
by pointing by reference on the appointment to modify.

1. Using the index

Each time an appointment is added to a schedule, <Scheduler>.AddAppointment returns an index. This index represents the added appointment. This index can be used to handle the appointment directly.

Example:

APTNum is int
APTNum = 5

// Change the title displayed on the appointment #5
SCH_ROOM[APTNum].Title = "Blue room"

2. Using a reference

To handle an appointment, use the <- operator to associate the appointment found in the Scheduler control with the Appointment variable. A modification performed on the variable will be automatically applied to the control.

Example:

À is Appointment
À <- SCH_Room[APTNum]
À.Title = "New title"

Using the popup menu (AAF)

The Scheduler control is associated with a popup menu (AAF). The popup menu of the Scheduler control is used to:

change the control display mode,
add, modify or delete an appointment.

To save the operations performed, you must use the events of the Scheduler control.

In the corresponding event, simply retrieve the appointment currently used and perform the corresponding process.

Example: To store an appointment added by the user via the popup menu in an APT data file, simply write the following in the event "Entry in edit in an appointment":

PROCEDURE Edit(aptEdited is Appointment)

// Store the data
APT.Title = aptEdited.Title
APT.StartDate = aptEdited.StartDate
APT.EndDate = aptEdited.EndDate
...
HAdd(APT)

The same type of code can be implemented for the different events of the Scheduler control. Indeed, for each control event that handles an appointment, a procedure has been automatically declared by the Scheduler control.

These procedures receive as parameter an Appointment variable affected by the process.

Advanced use of events associated with the Scheduler control

Advanced use of events with procedure

You can allow the user to define more precisely the characteristics of his appointment during an addition or a modification. To do so, create a window or a page with the information to fill.

In the code, simply open the window or the page in the event "Entry in edit in an appointment". To lock the direct input, the event must return False.

This principle can be applied to all the events called by the context menu of the Scheduler control.

Example: Opening a window used to enter the appointment.

PROCEDURE Edit(aptEdited is Appointment)

// Opens the window for entering an appointment
// with the selected appointment (in Creation or Modification mode)
WIN_EditAPT_HFSQL.Open(aptEdited)

// Returns False to lock the direct input in the Scheduler control
RESULT False

Managing public holidays

Public holidays can be set programmatically. Several WLanguage functions (starting with BankHolidayXXX) are available.

To define the public holidays displayed in Organizer, Scheduler and Calendar controls, use BankHolidayAdd. This function allows you to define the list of public holidays that will be used. This function allows you to customize the public holidays according to the country and local regulations. This function must be used at the beginning of the application because it has a global effect on the application.

Public holidays will be in green in the schedule.

Example:

// Delete all public holidays
BankHolidayDeleteAll()
// Initialize the 11 public holidays common to the French regions and territories
BankHolidayAdd("0101") // 1st of January
BankHolidayAdd(bhEasterMonday) // Easter Monday
BankHolidayAdd("0501") // 1st of May
BankHolidayAdd("0508") // 8th of May
BankHolidayAdd(bhAscensionDay) // Ascension day
BankHolidayAdd(bhWhitMonday) // Whit Monday
BankHolidayAdd("0714") // 14th of July
BankHolidayAdd("0815") // 15th of August (Assumption)
BankHolidayAdd("1101") // All Saints' Day
BankHolidayAdd("1111") // 11th of November
BankHolidayAdd("1225") // Christmas

// Add 2 additional public holidays for the regions of Moselle and Alsace
BankHolidayAdd("1226" + CR + bhGoodFriday)

Properties specific to Scheduler controls

The following properties are used to manage a Scheduler control through programming.


Versions 14 and later StartDate New in version 14 StartDate StartDate	The StartDate property is used to determine and change the start date of the selected time period: in a Calendar control. in an Organizer control. in a Scheduler control.
Versions 14 and later EndDate New in version 14 EndDate EndDate	The EndDate property is used to get and change the selected time period end date: in a Calendar control, in an Organizer control. in a Scheduler control.
Versions 17 and later MovementAPT New in version 17 MovementAPT MovementAPT	The MovementAPT property allows you to know and specify whether users can move appointments in a Scheduler or Organizer control.
Versions 16 and later GranularityMovement New in version 16 GranularityMovement GranularityMovement	The GranularityMovement property is used to get and change the size of the grid to move: appointments in an Organizer control. appointments in a Scheduler control. events in a TimeLine control. tasks in a Gantt Chart column.
Versions 16 and later GranularityDuration New in version 16 GranularityDuration GranularityDuration	The GranularityDuration property is used to get and change the size of the grid to resize: appointments in an Organizer control. appointments in a Scheduler control. events in a TimeLine control. tasks in a Gantt Chart column.
Versions 15 and later GranularityAppointment New in version 15 GranularityAppointment GranularityAppointment	The GranularityAppointment gets and changes the precision of the grid used to define appointments in Organizer or Scheduler controls. Property kept for backward compatibility.
Versions 17 and later DayHeight New in version 17 DayHeight DayHeight	The DayHeight property is used to get and change the height of days in a Scheduler control where days are arranged in rows, and resources are arranged in columns.
Versions 17 and later ResourceHeight New in version 17 ResourceHeight ResourceHeight	The ResourceHeight property is used to get and change the height of resources in a Scheduler control where resources are arranged in rows.
Versions 17 and later DayBreakHeight New in version 17 DayBreakHeight DayBreakHeight	The DayBreakHeight property is used to get and change the height of breaks between days in a Scheduler control where days are arranged in rows, and resources are arranged in columns.
Versions 15 and later WorkingHourStart New in version 15 WorkingHourStart WorkingHourStart	The WorkingHourStart property is used to get and change the start time of working hours used: by an Organizer control. by a Scheduler control. by a Gantt Chart column (in a Table or TreeView Table control).
Versions 15 and later WorkingHourEnd New in version 15 WorkingHourEnd WorkingHourEnd	The WorkingHourEnd property is used to identify and change the end time of working hours used: by an Organizer control. by a Scheduler control. by a Gantt Chart column (in a Table or TreeView Table control).
Versions 17 and later DayWidth New in version 17 DayWidth DayWidth	The DayWidth property is used to determine and change the width of days: in a Scheduler control where the days are displayed in column and the resources in rows. in a Gantt Chart column.
Versions 17 and later ResourceWidth New in version 17 ResourceWidth ResourceWidth	The ResourceWidth property is used to get and change the width of resources in a Scheduler control where resources are arranged in columns.
Versions 16 and later MaskTitleDate New in version 16 MaskTitleDate MaskTitleDate	The MaskTitleDate property is used to identify and change the input mask used for the title of day columns in Organizer or Scheduler controls
Versions 15 and later NbDayDisplayed New in version 15 NbDayDisplayed NbDayDisplayed	The NbDayDisplayed property is used to: get and change the number of days displayed in an Organizer or Scheduler control. get the number of days displayed in a Gantt Chart control in a report.
Versions 15 and later Num1stDayOfTheWeek New in version 15 Num1stDayOfTheWeek Num1stDayOfTheWeek	Num1stDayOfTheWeek is used to find out and modify the 1st day of the week displayed in: a Calendar control. an Organizer control. a Scheduler control. an edit control in Date format with Calendar.
Versions 16 and later Resource New in version 16 Resource Resource	The Resource property is used to: find out the resources visible in a Scheduler control. find out the resource of the Scheduler control that corresponds to the specified index.
Versions 16 and later SelectedResource New in version 16 SelectedResource SelectedResource	The SelectedResource property returns the name of the resource that corresponds to the user's selection in a Scheduler control.
Versions 17 and later DirectInputAPT New in version 17 DirectInputAPT DirectInputAPT	The DirectInputAPT property is used to determine and specify if the user can directly change the title of an appointment in a Scheduler or Organizer control.
Versions 17 and later PeriodSelection New in version 17 PeriodSelection PeriodSelection	The PeriodSelection property is used to determine and specify if the user can select a time period in an Scheduler or Organizer control.

For a complete list of WLanguage properties that can be used with a Scheduler control, see Properties associated with the Scheduler control.