- Events managed by default
- Optional events
- Overview
- Optional event: Allow closing
- Optional event: Resizing
- Optional event: Focus gain
- Optional event: Focus loss
- Optional event: Before closing with OK/Close button
- Optional event: Whenever modiying
- Optional event: Move application to the foreground
- Optional event: Move the application to the background
- Optional event: Changing the layout
- Optional event: Application of light/dark theme
Events associated with windows
Events managed by default WINDEV and WINDEV Mobile manage the following events by default (order of appearance in the code editor): | | | Event | Runtime condition |
|---|
| Global declarations | Declaring the variables global to the window. This is the first code run when opening the window. | | End of initialization | Run when the window is opened.
The events are run in the following order:- Initializing the window controls (*)
- Initializing the window
- Focus gain
Remark: A blinking effect may appear if the code for updating the controls is included in this event. Indeed, the initialization code of controls is run before the update code. | | Closing | Run when closing the window.
Remarks: - Resuming the input in one of the window controls in this code prevents from closing the window.
- If the window contains a "Cancel" Button, only the click code of this button is executed when the window is closed.
|  Versions 20 and laterRequest for refreshing the display  New in version 20Request for refreshing the display | Used to group the code for updating the window controls: content of controls, state (visible, grayed, etc.), caption to refresh, etc. This event can receive parameters. Simply declare a procedure in the event. For example:
// Request for refreshing the display
PROCEDURE AskForRefresh(RefreshType is boolean)
This event is started upon request by the following functions: When these functions are called, you can specify the value of the parameters expected by the event. | Versions 17 and later New in version 17 | Run when the user turns the screen around. This allows you to reposition the controls when changing the orientation of the screen. | | Closing a child window of the window | Run when closing a child window opened from the current window. You can: - use the Name property to get the name of the child window that was closed.
- use the ReturnedValue property to get the return value of the child window.Example:
// -- Close a child window of WIN_OrderList
// Refreshes the list of orders if necessary
IF MyChildWindow.ReturnedValue = True THEN
OrderList()
END
The MyChildWindow keyword is used to manipulate the child window. | Versions 18 and later New in version 18 | Used to update the Widget content. This event is run:- when opening a Widget window.
- at regular time interval. This interval is defined in the "Details" tab of description window.
Remark: WidgetDisplay redisplays the Widget and runs the refresh event. |
(*) By default, the "Initializing" event of each control is run according to the order in which the controls were created in the window. To modify this order of execution: - On the "Window" pane, in the "Order" group, click "Initialization".
- In the window displayed, use the arrows on the right to modify the order in which the controls are initialized.
Caution: If one or more controls use the persistence of controls, the "Whenever modified" code can be run when initializing the control. For more details, see Persistence of controls. Overview Several optional events can be managed.
To add an optional event: - Select the requested control.
- Display the code window of this control (F2 key).
- Click the link "Add other events to xxx" at the bottom of the window code, after the last event.
- All the optional events available for the control are displayed.
- Check the optional event to add and validate.
Remark: You can select several optional events. - The selected optional event is automatically added to the events managed by the control.
To disable an optional event, simply perform the same operations to display the list of optional events. Then simply uncheck the optional events to delete.
Remark: If the disabled code contains WLanguage code, this code is automatically deleted. You can manage, for example: - the mouse hover over the control,
- left mouse button down, up, with a double click,
- the right mouse button down, up, with double click,
- the mouse wheel, etc.
Versions 26 and laterOptional event: Allow closing This event can be used to make a verification when the window is closed, right before the "Closing" event is executed. This event can be used to: - request a confirmation,
- prevent the window from closing. To do so, simply write the following line of code:
Caution: If the window contains a "Cancel" Button, only the click code of this button is executed when the window is closed. New in version 26Optional event: Allow closing This event can be used to make a verification when the window is closed, right before the "Closing" event is executed. This event can be used to: - request a confirmation,
- prevent the window from closing. To do so, simply write the following line of code:
Caution: If the window contains a "Cancel" Button, only the click code of this button is executed when the window is closed. Optional event: Allow closing This event can be used to make a verification when the window is closed, right before the "Closing" event is executed. This event can be used to: - request a confirmation,
- prevent the window from closing. To do so, simply write the following line of code:
Caution: If the window contains a "Cancel" Button, only the click code of this button is executed when the window is closed. Optional event: Resizing Run in the following cases: - Minimizing the window
- Enlarging or resizing the window
- Restoring the window once it was minimized
Optional event: Focus gain Run when the window takes focus (the title bar is active) and when another window loses focus: - the user clicked another window of the application
- ReturnToCapture was run from another window of the application
This event will not be executed: - when opening the first project window.
- when running OpenChild, OpenMobileWindow or OpenSister from the current window.
- if Close is called in the window initialization code.
- if the user clicks a window of another program then re-clicks the initial window.
Optional event: Focus loss Run when the window loses focus when going to another window. This event is always called before the focus gain event of another window in the following cases: - closing the window (before the closing event)
- the user clicked another window of the application
- ReturnToCapture was run from another window of the application
This event will not be executed: - if ReturnToCapture to another window was run in the window initialization code
- if Close is called in the window initialization code
- if the user clicks a window of another program then re-clicks the initial window
Optional event: Whenever modiying Run when one of the window controls is modified (input performed by the user for example). Versions 18 and later New in version 18 Versions 18 and later New in version 18 Versions 23 and later New in version 23 Versions 25 and later New in version 25
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