The
windowClosing
event handler is a special user-defined
Function
that can be added to a window, either native or internal, when it is created
and that will be called automatically with a single
WindowEvent
argument whenever the user tries to close the window using the window's
close button, the system menu, or a system dependent keystroke.
A
windowClosing
event handler can only be added via
addEventHandler
after a window is created,
but an existing
windowClosing
event handler can be assigned new values.
Assigning
NULL
to
windowClosing
disables its functionality until a
NULL
value is assigned to it.
A
windowClosing
event handler can return nothing or any value other than zero
when it wants to ignore the closing action, which means the window will remain open.
Windows that do not ignore the closing action, either because they do not have a
windowClosing
event handler or the one they have returns zero, are automatically disposed by the
Yoix interpreter, which means their
windowClosed
event handler, if they have one, will also be called.
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| Return: |
int
or
none
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| See Also: |
actionPerformed,
addEventHandler,
adjustmentValueChanged,
caretUpdate,
componentHidden,
componentMoved,
componentResized,
componentShown,
dragDropEnd,
dragEnter,
dragExit,
dragGestureRecognized,
dragMouseMoved,
dragOver,
drop,
dropActionChanged,
Event,
focusGained,
focusLost,
hyperlinkActivated,
hyperlinkEntered,
hyperlinkExited,
invocationAction,
invocationBrowse,
invocationChange,
invocationEdit,
invocationEditKey,
invocationRun,
invocationSelection,
itemStateChanged,
keyPressed,
keyReleased,
keyTyped,
mouseClicked,
mouseDragged,
mouseEntered,
mouseExited,
mouseMoved,
mousePressed,
mouseReleased,
mouseWheelMoved,
removeEventHandler,
stateChanged,
textValueChanged,
valueChanged,
windowActivated,
windowClosed,
windowDeactivated,
windowDeiconified,
WindowEvent,
windowIconified,
windowOpened
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