AlertWindow Class Reference

A window that displays a message and has buttons for the user to react to it. More...

#include <juce_AlertWindow.h>

Inheritance diagram for AlertWindow:

Classes
struct	LookAndFeelMethods
	This abstract base class is implemented by LookAndFeel classes to provide alert-window drawing functionality. More...

Public Types
enum	ColourIds { backgroundColourId = 0x1001800 , textColourId = 0x1001810 , outlineColourId = 0x1001820 }
	A set of colour IDs to use to change the colour of various aspects of the alert box. More...
using	AlertIconType = MessageBoxIconType
Public Types inherited from Component
enum class	WindowControlKind {   client , caption , minimise , maximise ,   close , sizeTop , sizeLeft , sizeRight ,   sizeBottom , sizeTopLeft , sizeTopRight , sizeBottomLeft ,   sizeBottomRight }
	Types of control that are commonly found in windows, especially title-bars. More...
enum class	FocusContainerType { none , focusContainer , keyboardFocusContainer }
	A focus container type that can be passed to setFocusContainerType(). More...
enum	FocusChangeType { focusChangedByMouseClick , focusChangedByTabKey , focusChangedDirectly }
	Enumeration used by the focusGained() and focusLost() methods. More...
enum class	FocusChangeDirection { unknown , forward , backward }
	Enumeration used by the focusGainedWithDirection() method. More...

Public Member Functions
	AlertWindow (const String &title, const String &message, MessageBoxIconType iconType, Component *associatedComponent=nullptr)
	Creates an AlertWindow.
	~AlertWindow () override
	Destroys the AlertWindow.
MessageBoxIconType	getAlertType () const noexcept
	Returns the type of alert icon that was specified when the window was created.
void	setMessage (const String &message)
	Changes the dialog box's message.
void	addButton (const String &name, int returnValue, const KeyPress &shortcutKey1=KeyPress(), const KeyPress &shortcutKey2=KeyPress())
	Adds a button to the window.
int	getNumButtons () const
	Returns the number of buttons that the window currently has.
Button *	getButton (int index) const
	Returns a Button that was added to the AlertWindow.
Button *	getButton (const String &buttonName) const
	Returns a Button that was added to the AlertWindow.
void	triggerButtonClick (const String &buttonName)
	Invokes a click of one of the buttons.
void	setEscapeKeyCancels (bool shouldEscapeKeyCancel)
	If set to true and the window contains no buttons, then pressing the escape key will make the alert cancel its modal state.
void	addTextEditor (const String &name, const String &initialContents, const String &onScreenLabel=String(), bool isPasswordBox=false)
	Adds a textbox to the window for entering strings.
String	getTextEditorContents (const String &nameOfTextEditor) const
	Returns the contents of a named textbox.
TextEditor *	getTextEditor (const String &nameOfTextEditor) const
	Returns a pointer to a textbox that was added with addTextEditor().
void	addComboBox (const String &name, const StringArray &items, const String &onScreenLabel=String())
	Adds a drop-down list of choices to the box.
ComboBox *	getComboBoxComponent (const String &nameOfList) const
	Returns a drop-down list that was added to the AlertWindow.
void	addTextBlock (const String &text)
	Adds a block of text.
void	addProgressBarComponent (double &progressValue, std::optional< ProgressBar::Style > style=std::nullopt)
	Adds a progress-bar to the window.
void	addCustomComponent (Component *component)
	Adds a user-defined component to the dialog box.
int	getNumCustomComponents () const
	Returns the number of custom components in the dialog box.
Component *	getCustomComponent (int index) const
	Returns one of the custom components in the dialog box.
Component *	removeCustomComponent (int index)
	Removes one of the custom components in the dialog box.
bool	containsAnyExtraComponents () const
	Returns true if the window contains any components other than just buttons.
std::unique_ptr< AccessibilityHandler >	createAccessibilityHandler () override
	Override this method to return a custom AccessibilityHandler for this component.
Public Member Functions inherited from TopLevelWindow
	TopLevelWindow (const String &name, bool addToDesktop)
	Creates a TopLevelWindow.
	~TopLevelWindow () override
	Destructor.
bool	isActiveWindow () const noexcept
	True if this is currently the TopLevelWindow that is actively being used.
void	centreAroundComponent (Component *componentToCentreAround, int width, int height)
	This will set the bounds of the window so that it's centred in front of another window.
void	setDropShadowEnabled (bool useShadow)
	Turns the drop-shadow on and off.
bool	isDropShadowEnabled () const noexcept
	True if drop-shadowing is enabled.
void	setUsingNativeTitleBar (bool useNativeTitleBar)
	Sets whether an OS-native title bar will be used, or a JUCE one.
bool	isUsingNativeTitleBar () const noexcept
	Returns true if the window is currently using an OS-native title bar.
void	addToDesktop ()
	Adds the window to the desktop using the default flags.
void	addToDesktop (int windowStyleFlags, void *nativeWindowToAttachTo=nullptr) override
	Makes this component appear as a window on the desktop.
std::unique_ptr< AccessibilityHandler >	createAccessibilityHandler () override
	Override this method to return a custom AccessibilityHandler for this component.
Public Member Functions inherited from Component
	Component () noexcept
	Creates a component.
	~Component () override
	Destructor.
	Component (const String &componentName) noexcept
	Creates a component, setting its name at the same time.
String	getName () const noexcept
	Returns the name of this component.
virtual void	setName (const String &newName)
	Sets the name of this component.
String	getComponentID () const noexcept
	Returns the ID string that was set by setComponentID().
void	setComponentID (const String &newID)
	Sets the component's ID string.
virtual void	setVisible (bool shouldBeVisible)
	Makes the component visible or invisible.
bool	isVisible () const noexcept
	Tests whether the component is visible or not.
bool	isShowing () const
	Tests whether this component and all its parents are visible.
void	removeFromDesktop ()
	If the component is currently showing on the desktop, this will hide it.
bool	isOnDesktop () const noexcept
	Returns true if this component is currently showing on the desktop.
ComponentPeer *	getPeer () const
	Returns the heavyweight window that contains this component.
virtual void	minimisationStateChanged (bool isNowMinimised)
	Called for a desktop component which has just been minimised or un-minimised.
void	toFront (bool shouldAlsoGainKeyboardFocus)
	Brings the component to the front of its siblings.
void	toBack ()
	Changes this component's z-order to be at the back of all its siblings.
void	toBehind (Component *other)
	Changes this component's z-order so that it's just behind another component.
void	setAlwaysOnTop (bool shouldStayOnTop)
	Sets whether the component should always be kept at the front of its siblings.
bool	isAlwaysOnTop () const noexcept
	Returns true if this component is set to always stay in front of its siblings.
int	getX () const noexcept
	Returns the x coordinate of the component's left edge.
int	getY () const noexcept
	Returns the y coordinate of the top of this component.
int	getWidth () const noexcept
	Returns the component's width in pixels.
int	getHeight () const noexcept
	Returns the component's height in pixels.
int	getRight () const noexcept
	Returns the x coordinate of the component's right-hand edge.
Point< int >	getPosition () const noexcept
	Returns the component's top-left position as a Point.
int	getBottom () const noexcept
	Returns the y coordinate of the bottom edge of this component.
Rectangle< int >	getBounds () const noexcept
	Returns this component's bounding box.
Rectangle< int >	getLocalBounds () const noexcept
	Returns the component's bounds, relative to its own origin.
Rectangle< int >	getBoundsInParent () const noexcept
	Returns the area of this component's parent which this component covers.
int	getScreenX () const
	Returns this component's x coordinate relative the screen's top-left origin.
int	getScreenY () const
	Returns this component's y coordinate relative the screen's top-left origin.
Point< int >	getScreenPosition () const
	Returns the position of this component's top-left corner relative to the screen's top-left.
Rectangle< int >	getScreenBounds () const
	Returns the bounds of this component, relative to the screen's top-left.
Point< int >	getLocalPoint (const Component *sourceComponent, Point< int > pointRelativeToSourceComponent) const
	Converts a point to be relative to this component's coordinate space.
Point< float >	getLocalPoint (const Component *sourceComponent, Point< float > pointRelativeToSourceComponent) const
	Converts a point to be relative to this component's coordinate space.
Rectangle< int >	getLocalArea (const Component *sourceComponent, Rectangle< int > areaRelativeToSourceComponent) const
	Converts a rectangle to be relative to this component's coordinate space.
Rectangle< float >	getLocalArea (const Component *sourceComponent, Rectangle< float > areaRelativeToSourceComponent) const
	Converts a rectangle to be relative to this component's coordinate space.
Point< int >	localPointToGlobal (Point< int > localPoint) const
	Converts a point relative to this component's top-left into a screen coordinate.
Point< float >	localPointToGlobal (Point< float > localPoint) const
	Converts a point relative to this component's top-left into a screen coordinate.
Rectangle< int >	localAreaToGlobal (Rectangle< int > localArea) const
	Converts a rectangle from this component's coordinate space to a screen coordinate.
Rectangle< float >	localAreaToGlobal (Rectangle< float > localArea) const
	Converts a rectangle from this component's coordinate space to a screen coordinate.
void	setTopLeftPosition (int x, int y)
	Moves the component to a new position.
void	setTopLeftPosition (Point< int > newTopLeftPosition)
	Moves the component to a new position.
void	setTopRightPosition (int x, int y)
	Moves the component to a new position.
void	setSize (int newWidth, int newHeight)
	Changes the size of the component.
void	setBounds (int x, int y, int width, int height)
	Changes the component's position and size.
void	setBounds (Rectangle< int > newBounds)
	Changes the component's position and size.
void	setBoundsRelative (float proportionalX, float proportionalY, float proportionalWidth, float proportionalHeight)
	Changes the component's position and size in terms of fractions of its parent's size.
void	setBoundsRelative (Rectangle< float > proportionalArea)
	Changes the component's position and size in terms of fractions of its parent's size.
void	setBoundsInset (BorderSize< int > borders)
	Changes the component's position and size based on the amount of space to leave around it.
void	setBoundsToFit (Rectangle< int > targetArea, Justification justification, bool onlyReduceInSize)
	Positions the component within a given rectangle, keeping its proportions unchanged.
void	setCentrePosition (int x, int y)
	Changes the position of the component's centre.
void	setCentrePosition (Point< int > newCentrePosition)
	Changes the position of the component's centre.
void	setCentreRelative (float x, float y)
	Changes the position of the component's centre.
void	centreWithSize (int width, int height)
	Changes the component's size and centres it within its parent.
void	setTransform (const AffineTransform &transform)
	Sets a transform matrix to be applied to this component.
AffineTransform	getTransform () const
	Returns the transform that is currently being applied to this component.
bool	isTransformed () const noexcept
	Returns true if a non-identity transform is being applied to this component.
int	proportionOfWidth (float proportion) const noexcept
	Returns a proportion of the component's width.
int	proportionOfHeight (float proportion) const noexcept
	Returns a proportion of the component's height.
int	getParentWidth () const noexcept
	Returns the width of the component's parent.
int	getParentHeight () const noexcept
	Returns the height of the component's parent.
Rectangle< int >	getParentMonitorArea () const
	Returns the screen coordinates of the monitor that contains this component.
int	getNumChildComponents () const noexcept
	Returns the number of child components that this component contains.
Component *	getChildComponent (int index) const noexcept
	Returns one of this component's child components, by it index.
int	getIndexOfChildComponent (const Component *child) const noexcept
	Returns the index of this component in the list of child components.
const Array< Component * > &	getChildren () const noexcept
	Provides access to the underlying array of child components.
Component *	findChildWithID (StringRef componentID) const noexcept
	Looks for a child component with the specified ID.
void	addChildComponent (Component *child, int zOrder=-1)
	Adds a child component to this one.
void	addChildComponent (Component &child, int zOrder=-1)
	Adds a child component to this one.
void	addAndMakeVisible (Component *child, int zOrder=-1)
	Adds a child component to this one, and also makes the child visible if it isn't already.
void	addAndMakeVisible (Component &child, int zOrder=-1)
	Adds a child component to this one, and also makes the child visible if it isn't already.
void	addChildAndSetID (Component *child, const String &componentID)
	Adds a child component to this one, makes it visible, and sets its component ID.
void	removeChildComponent (Component *childToRemove)
	Removes one of this component's child-components.
Component *	removeChildComponent (int childIndexToRemove)
	Removes one of this component's child-components by index.
void	removeAllChildren ()
	Removes all this component's children.
void	deleteAllChildren ()
	Removes and deletes all of this component's children.
Component *	getParentComponent () const noexcept
	Returns the component which this component is inside.
template<class TargetClass >
TargetClass *	findParentComponentOfClass () const
	Searches the parent components for a component of a specified class.
Component *	getTopLevelComponent () const noexcept
	Returns the highest-level component which contains this one or its parents.
bool	isParentOf (const Component *possibleChild) const noexcept
	Checks whether a component is anywhere inside this component or its children.
virtual void	childrenChanged ()
	Subclasses can use this callback to be told when children are added or removed, or when their z-order changes.
virtual bool	hitTest (int x, int y)
	Tests whether a given point is inside the component.
virtual WindowControlKind	findControlAtPoint (Point< float >) const
	For components that are added to the desktop, this may be called to determine what kind of control is at particular locations in the window.
virtual void	windowControlClickedClose ()
	For components that are added to the desktop, this may be called to indicate that the mouse was clicked inside the area of the "close" control.
virtual void	windowControlClickedMinimise ()
	For components that are added to the desktop, this may be called to indicate that the mouse was clicked inside the area of the "minimise" control.
virtual void	windowControlClickedMaximise ()
	For components that are added to the desktop, this may be called to indicate that the mouse was clicked inside the area of the "maximise" control.
void	setInterceptsMouseClicks (bool allowClicksOnThisComponent, bool allowClicksOnChildComponents) noexcept
	Changes the default return value for the hitTest() method.
void	getInterceptsMouseClicks (bool &allowsClicksOnThisComponent, bool &allowsClicksOnChildComponents) const noexcept
	Retrieves the current state of the mouse-click interception flags.
bool	contains (Point< int > localPoint)
	Returns true if a given point lies within this component or one of its children.
bool	contains (Point< float > localPoint)
	Returns true if a given point lies within this component or one of its children.
bool	reallyContains (Point< int > localPoint, bool returnTrueIfWithinAChild)
	Returns true if a given point lies in this component, taking any overlapping siblings into account.
bool	reallyContains (Point< float > localPoint, bool returnTrueIfWithinAChild)
	Returns true if a given point lies in this component, taking any overlapping siblings into account.
Component *	getComponentAt (int x, int y)
	Returns the component at a certain point within this one.
Component *	getComponentAt (Point< int > position)
	Returns the component at a certain point within this one.
Component *	getComponentAt (Point< float > position)
	Returns the component at a certain point within this one.
void	repaint ()
	Marks the whole component as needing to be redrawn.
void	repaint (int x, int y, int width, int height)
	Marks a subsection of this component as needing to be redrawn.
void	repaint (Rectangle< int > area)
	Marks a subsection of this component as needing to be redrawn.
void	setBufferedToImage (bool shouldBeBuffered)
	Makes the component use an internal buffer to optimise its redrawing.
Image	createComponentSnapshot (Rectangle< int > areaToGrab, bool clipImageToComponentBounds=true, float scaleFactor=1.0f)
	Generates a snapshot of part of this component.
void	paintEntireComponent (Graphics &context, bool ignoreAlphaLevel)
	Draws this component and all its subcomponents onto the specified graphics context.
void	setPaintingIsUnclipped (bool shouldPaintWithoutClipping) noexcept
	This allows you to indicate that this component doesn't require its graphics context to be clipped when it is being painted.
bool	isPaintingUnclipped () const noexcept
	Returns true if this component doesn't require its graphics context to be clipped when it is being painted.
void	setComponentEffect (ImageEffectFilter *newEffect)
	Adds an effect filter to alter the component's appearance.
ImageEffectFilter *	getComponentEffect () const noexcept
	Returns the current component effect.
LookAndFeel &	getLookAndFeel () const noexcept
	Finds the appropriate look-and-feel to use for this component.
void	setLookAndFeel (LookAndFeel *newLookAndFeel)
	Sets the look and feel to use for this component.
FontOptions	withDefaultMetrics (FontOptions opt) const
	Returns a copy of the FontOptions with the default metrics kind from the component's LookAndFeel.
void	sendLookAndFeelChange ()
	Calls the methods repaint(), lookAndFeelChanged(), and colourChanged() in this component and all its children recursively.
void	setOpaque (bool shouldBeOpaque)
	Indicates whether any parts of the component might be transparent.
bool	isOpaque () const noexcept
	Returns true if no parts of this component are transparent.
void	setBroughtToFrontOnMouseClick (bool shouldBeBroughtToFront) noexcept
	Indicates whether the component should be brought to the front when clicked.
bool	isBroughtToFrontOnMouseClick () const noexcept
	Indicates whether the component should be brought to the front when clicked-on.
void	setExplicitFocusOrder (int newFocusOrderIndex)
	Sets the focus order of this component.
int	getExplicitFocusOrder () const
	Returns the focus order of this component, if one has been specified.
void	setFocusContainerType (FocusContainerType containerType) noexcept
	Sets whether this component is a container for components that can have their focus traversed, and the type of focus traversal that it supports.
bool	isFocusContainer () const noexcept
	Returns true if this component has been marked as a focus container.
bool	isKeyboardFocusContainer () const noexcept
	Returns true if this component has been marked as a keyboard focus container.
Component *	findFocusContainer () const
	Returns the focus container for this component.
Component *	findKeyboardFocusContainer () const
	Returns the keyboard focus container for this component.
void	setWantsKeyboardFocus (bool wantsFocus) noexcept
	Sets a flag to indicate whether this component wants keyboard focus or not.
bool	getWantsKeyboardFocus () const noexcept
	Returns true if the component is interested in getting keyboard focus.
void	setMouseClickGrabsKeyboardFocus (bool shouldGrabFocus)
	Chooses whether a click on this component automatically grabs the focus.
bool	getMouseClickGrabsKeyboardFocus () const noexcept
	Returns the last value set with setMouseClickGrabsKeyboardFocus().
void	grabKeyboardFocus ()
	Tries to give keyboard focus to this component.
void	giveAwayKeyboardFocus ()
	If this component or any of its children currently have the keyboard focus, this will defocus it, send a focus change notification, and try to pass the focus to the next component.
bool	hasKeyboardFocus (bool trueIfChildIsFocused) const
	Returns true if this component currently has the keyboard focus.
void	moveKeyboardFocusToSibling (bool moveToNext)
	Tries to move the keyboard focus to one of this component's siblings.
virtual std::unique_ptr< ComponentTraverser >	createFocusTraverser ()
	Creates a ComponentTraverser object to determine the logic by which focus should be passed from this component.
virtual std::unique_ptr< ComponentTraverser >	createKeyboardFocusTraverser ()
	Creates a ComponentTraverser object to use to determine the logic by which keyboard focus should be passed from this component.
void	setHasFocusOutline (bool hasFocusOutline) noexcept
	Use this to indicate that the component should have an outline drawn around it when it has keyboard focus.
bool	hasFocusOutline () const noexcept
	Returns true if this component should have a focus outline.
bool	isEnabled () const noexcept
	Returns true if the component (and all its parents) are enabled.
void	setEnabled (bool shouldBeEnabled)
	Enables or disables this component.
virtual void	enablementChanged ()
	Callback to indicate that this component has been enabled or disabled.
float	getAlpha () const noexcept
	Returns the component's current transparency level.
void	setAlpha (float newAlpha)
	Changes the transparency of this component.
virtual void	alphaChanged ()
	Called when setAlpha() is used to change the alpha value of this component.
void	setMouseCursor (const MouseCursor &cursorType)
	Changes the mouse cursor shape to use when the mouse is over this component.
virtual MouseCursor	getMouseCursor ()
	Returns the mouse cursor shape to use when the mouse is over this component.
void	updateMouseCursor () const
	Forces the current mouse cursor to be updated.
virtual void	paintOverChildren (Graphics &g)
	Components can override this method to draw over the top of their children.
void	mouseMove (const MouseEvent &event) override
	Called when the mouse moves inside a component.
void	mouseEnter (const MouseEvent &event) override
	Called when the mouse first enters a component.
void	mouseExit (const MouseEvent &event) override
	Called when the mouse moves out of a component.
void	mouseDown (const MouseEvent &event) override
	Called when a mouse button is pressed.
void	mouseDrag (const MouseEvent &event) override
	Called when the mouse is moved while a button is held down.
void	mouseUp (const MouseEvent &event) override
	Called when a mouse button is released.
void	mouseDoubleClick (const MouseEvent &event) override
	Called when a mouse button has been double-clicked on a component.
void	mouseWheelMove (const MouseEvent &event, const MouseWheelDetails &wheel) override
	Called when the mouse-wheel is moved.
void	mouseMagnify (const MouseEvent &event, float scaleFactor) override
	Called when a pinch-to-zoom mouse-gesture is used.
void	setRepaintsOnMouseActivity (bool shouldRepaint) noexcept
	Causes automatic repaints when the mouse enters or exits this component.
void	addMouseListener (MouseListener *newListener, bool wantsEventsForAllNestedChildComponents)
	Registers a listener to be told when mouse events occur in this component.
void	removeMouseListener (MouseListener *listenerToRemove)
	Deregisters a mouse listener.
void	addKeyListener (KeyListener *newListener)
	Adds a listener that wants to hear about keypresses that this component receives.
void	removeKeyListener (KeyListener *listenerToRemove)
	Removes a previously-registered key listener.
virtual bool	keyStateChanged (bool isKeyDown)
	Called when a key is pressed or released.
virtual void	modifierKeysChanged (const ModifierKeys &modifiers)
	Called when a modifier key is pressed or released.
virtual void	focusGained (FocusChangeType cause)
	Called to indicate that this component has just acquired the keyboard focus.
virtual void	focusGainedWithDirection (FocusChangeType cause, FocusChangeDirection direction)
	Called to indicate that this component has just acquired the keyboard focus.
virtual void	focusLost (FocusChangeType cause)
	Called to indicate that this component has just lost the keyboard focus.
bool	isMouseOver (bool includeChildren=false) const
	Returns true if the mouse is currently over this component.
bool	isMouseButtonDown (bool includeChildren=false) const
	Returns true if the mouse button is currently held down in this component.
bool	isMouseOverOrDragging (bool includeChildren=false) const
	True if the mouse is over this component, or if it's being dragged in this component.
Point< int >	getMouseXYRelative () const
	Returns the mouse's current position, relative to this component.
virtual void	resized ()
	Called when this component's size has been changed.
virtual void	moved ()
	Called when this component's position has been changed.
virtual void	childBoundsChanged (Component *child)
	Called when one of this component's children is moved or resized.
virtual void	parentSizeChanged ()
	Called when this component's immediate parent has been resized.
virtual void	broughtToFront ()
	Called when this component has been moved to the front of its siblings.
void	addComponentListener (ComponentListener *newListener)
	Adds a listener to be told about changes to the component hierarchy or position.
void	removeComponentListener (ComponentListener *listenerToRemove)
	Removes a component listener.
void	postCommandMessage (int commandId)
	Dispatches a numbered message to this component.
virtual void	handleCommandMessage (int commandId)
	Called to handle a command that was sent by postCommandMessage().
int	runModalLoop ()
	Runs a component modally, waiting until the loop terminates.
void	enterModalState (bool takeKeyboardFocus=true, ModalComponentManager::Callback *callback=nullptr, bool deleteWhenDismissed=false)
	Puts the component into a modal state.
void	exitModalState (int returnValue=0)
	Ends a component's modal state.
bool	isCurrentlyModal (bool onlyConsiderForemostModalComponent=true) const noexcept
	Returns true if this component is the modal one.
bool	isCurrentlyBlockedByAnotherModalComponent () const
	Checks whether there's a modal component somewhere that's stopping this one from receiving messages.
virtual bool	canModalEventBeSentToComponent (const Component *targetComponent)
	When a component is modal, this callback allows it to choose which other components can still receive events.
virtual void	inputAttemptWhenModal ()
	Called when the user tries to click on a component that is blocked by another modal component.
NamedValueSet &	getProperties () noexcept
	Returns the set of properties that belong to this component.
const NamedValueSet &	getProperties () const noexcept
	Returns the set of properties that belong to this component.
Colour	findColour (int colourID, bool inheritFromParent=false) const
	Looks for a colour that has been registered with the given colour ID number.
void	setColour (int colourID, Colour newColour)
	Registers a colour to be used for a particular purpose.
void	removeColour (int colourID)
	If a colour has been set with setColour(), this will remove it.
bool	isColourSpecified (int colourID) const
	Returns true if the specified colour ID has been explicitly set for this component using the setColour() method.
void	copyAllExplicitColoursTo (Component &target) const
	This looks for any colours that have been specified for this component, and copies them to the specified target component.
virtual void	colourChanged ()
	This method is called when a colour is changed by the setColour() method, or when the look-and-feel is changed by the setLookAndFeel() or sendLookAndFeelChanged() methods.
void *	getWindowHandle () const
	Returns the underlying native window handle for this component.
Positioner *	getPositioner () const noexcept
	Returns the Positioner object that has been set for this component.
void	setPositioner (Positioner *newPositioner)
	Sets a new Positioner object for this component.
void	setCachedComponentImage (CachedComponentImage *newCachedImage)
	Gives the component a CachedComponentImage that should be used to buffer its painting.
CachedComponentImage *	getCachedComponentImage () const noexcept
	Returns the object that was set by setCachedComponentImage().
void	setViewportIgnoreDragFlag (bool ignoreDrag) noexcept
	Sets a flag to indicate whether mouse drag events on this Component should be ignored when it is inside a Viewport with drag-to-scroll functionality enabled.
bool	getViewportIgnoreDragFlag () const noexcept
	Retrieves the current state of the Viewport drag-to-scroll functionality flag.
String	getTitle () const noexcept
	Returns the title text for this component.
void	setTitle (const String &newTitle)
	Sets the title for this component.
String	getDescription () const noexcept
	Returns the description for this component.
void	setDescription (const String &newDescription)
	Sets the description for this component.
String	getHelpText () const noexcept
	Returns the help text for this component.
void	setHelpText (const String &newHelpText)
	Sets the help text for this component.
void	setAccessible (bool shouldBeAccessible)
	Sets whether this component and its children are visible to accessibility clients.
bool	isAccessible () const noexcept
	Returns true if this component and its children are visible to accessibility clients.
AccessibilityHandler *	getAccessibilityHandler ()
	Returns the accessibility handler for this component, or nullptr if this component is not accessible.
void	invalidateAccessibilityHandler ()
	Invalidates the AccessibilityHandler that is currently being used for this component.
Public Member Functions inherited from MouseListener
virtual	~MouseListener ()=default
	Destructor.

Static Public Member Functions
static void JUCE_CALLTYPE	showMessageBox (MessageBoxIconType iconType, const String &title, const String &message, const String &buttonText=String(), Component *associatedComponent=nullptr)
	Shows a dialog box that just has a message and a single button to get rid of it.
static int JUCE_CALLTYPE	show (const MessageBoxOptions &options)
	Shows a dialog box using the specified options.
static void JUCE_CALLTYPE	showAsync (const MessageBoxOptions &options, ModalComponentManager::Callback *callback)
	Shows a dialog box using the specified options.
static void JUCE_CALLTYPE	showAsync (const MessageBoxOptions &options, std::function< void(int)> callback)
	Shows a dialog box using the specified options.
static void JUCE_CALLTYPE	showMessageBoxAsync (MessageBoxIconType iconType, const String &title, const String &message, const String &buttonText=String(), Component *associatedComponent=nullptr, ModalComponentManager::Callback *callback=nullptr)
	Shows a dialog box that just has a message and a single button to get rid of it.
static bool JUCE_CALLTYPE	showOkCancelBox (MessageBoxIconType iconType, const String &title, const String &message, const String &button1Text=String(), const String &button2Text=String(), Component *associatedComponent=nullptr, ModalComponentManager::Callback *callback=nullptr)
	Shows a dialog box with two buttons.
static int JUCE_CALLTYPE	showYesNoCancelBox (MessageBoxIconType iconType, const String &title, const String &message, const String &button1Text=String(), const String &button2Text=String(), const String &button3Text=String(), Component *associatedComponent=nullptr, ModalComponentManager::Callback *callback=nullptr)
	Shows a dialog box with three buttons.
static ScopedMessageBox	showScopedAsync (const MessageBoxOptions &options, std::function< void(int)> callback)
	Shows an alert window using the specified options.
Static Public Member Functions inherited from TopLevelWindow
static int	getNumTopLevelWindows () noexcept
	Returns the number of TopLevelWindow objects currently in use.
static TopLevelWindow *	getTopLevelWindow (int index) noexcept
	Returns one of the TopLevelWindow objects currently in use.
static TopLevelWindow *	getActiveTopLevelWindow () noexcept
	Returns the currently-active top level window.
Static Public Member Functions inherited from Component
static float JUCE_CALLTYPE	getApproximateScaleFactorForComponent (const Component *targetComponent)
	Returns the approximate scale factor for a given component by traversing its parent hierarchy and applying each transform and finally scaling this by the global scale factor.
static Component *JUCE_CALLTYPE	getCurrentlyFocusedComponent () noexcept
	Returns the component that currently has the keyboard focus.
static void JUCE_CALLTYPE	unfocusAllComponents ()
	If any component has keyboard focus, this will defocus it.
static void JUCE_CALLTYPE	beginDragAutoRepeat (int millisecondsBetweenCallbacks)
	Ensures that a non-stop stream of mouse-drag events will be sent during the current mouse-drag operation.
static bool JUCE_CALLTYPE	isMouseButtonDownAnywhere () noexcept
	Returns true if a mouse button is currently down.
static int JUCE_CALLTYPE	getNumCurrentlyModalComponents () noexcept
	Returns the number of components that are currently in a modal state.
static Component *JUCE_CALLTYPE	getCurrentlyModalComponent (int index=0) noexcept
	Returns one of the components that are currently modal.

Static Public Attributes
static constexpr auto	NoIcon = MessageBoxIconType::NoIcon
static constexpr auto	QuestionIcon = MessageBoxIconType::QuestionIcon
static constexpr auto	WarningIcon = MessageBoxIconType::WarningIcon
static constexpr auto	InfoIcon = MessageBoxIconType::InfoIcon

Protected Member Functions
void	paint (Graphics &) override
	Components can override this method to draw their content.
void	mouseDown (const MouseEvent &) override
	Called when a mouse button is pressed.
void	mouseDrag (const MouseEvent &) override
	Called when the mouse is moved while a button is held down.
bool	keyPressed (const KeyPress &) override
	Called when a key is pressed.
void	lookAndFeelChanged () override
	Called to let the component react to a change in the look-and-feel setting.
void	userTriedToCloseWindow () override
	For components on the desktop, this is called if the system wants to close the window.
int	getDesktopWindowStyleFlags () const override
float	getDesktopScaleFactor () const override
	Returns the default scale factor to use for this component when it is placed on the desktop.
Protected Member Functions inherited from TopLevelWindow
virtual void	activeWindowStatusChanged ()
	This callback happens when this window becomes active or inactive.
void	focusOfChildComponentChanged (FocusChangeType) override
	Called to indicate a change in whether or not this component is the parent of the currently-focused component.
void	parentHierarchyChanged () override
	Called to indicate that the component's parents have changed.
void	recreateDesktopWindow ()
void	visibilityChanged () override
	Called when this component's visibility changes.

Detailed Description

A window that displays a message and has buttons for the user to react to it.

For simple dialog boxes with just a couple of buttons on them, there are some static methods for running these.

For more complex dialogs, an AlertWindow can be created, then it can have some buttons and components added to it, and its enterModalState() method is used to show it. The value returned to the ModalComponentManager::Callback shows which button the user pressed to dismiss the box.

See also

ThreadWithProgressWindow, Component::enterModalState

Member Typedef Documentation

AlertIconType

using AlertWindow::AlertIconType = MessageBoxIconType

Member Enumeration Documentation

ColourIds

enum AlertWindow::ColourIds

A set of colour IDs to use to change the colour of various aspects of the alert box.

These constants can be used either via the Component::setColour(), or LookAndFeel::setColour() methods.

See also

Component::setColour, Component::findColour, LookAndFeel::setColour, LookAndFeel::findColour

Enumerator
backgroundColourId	The background colour for the window.
textColourId	The colour for the text.
outlineColourId	An optional colour to use to draw a border around the window.

Constructor & Destructor Documentation

AlertWindow()

AlertWindow::AlertWindow	(	const String &	title,
		const String &	message,
		MessageBoxIconType	iconType,
		Component *	associatedComponent = nullptr )

Creates an AlertWindow.

Parameters

title	the headline to show at the top of the dialog box
message	a longer, more descriptive message to show underneath the headline
iconType	the type of icon to display
associatedComponent	if this is non-null, it specifies the component that the alert window should be associated with. Depending on the look and feel, this might be used for positioning of the alert window.

~AlertWindow()

AlertWindow::~AlertWindow ( )

override

Destroys the AlertWindow.

Member Function Documentation

getAlertType()

MessageBoxIconType AlertWindow::getAlertType ( ) const

noexcept

Returns the type of alert icon that was specified when the window was created.

setMessage()

void AlertWindow::setMessage

(

const String &

message

)

Changes the dialog box's message.

This will also resize the window to fit the new message if required.

addButton()

void AlertWindow::addButton	(	const String &	name,
		int	returnValue,
		const KeyPress &	shortcutKey1 = KeyPress(),
		const KeyPress &	shortcutKey2 = KeyPress() )

Adds a button to the window.

Parameters

name	the text to show on the button
returnValue	the value that should be returned from runModalLoop() if this is the button that the user presses.
shortcutKey1	an optional key that can be pressed to trigger this button
shortcutKey2	a second optional key that can be pressed to trigger this button

getNumButtons()

int AlertWindow::getNumButtons

(

)

const

Returns the number of buttons that the window currently has.

getButton() [1/2]

Button * AlertWindow::getButton

(

int

index

)

const

Returns a Button that was added to the AlertWindow.

Parameters

index

the index of the button in order that it was added with the addButton() method.

Returns

the Button component, or nullptr if the index is out of bounds.

See also

getNumButtons

getButton() [2/2]

Button * AlertWindow::getButton

(

const String &

buttonName

)

const

Returns a Button that was added to the AlertWindow.

Parameters

buttonName

the name that was passed into the addButton() method

Returns

the Button component, or nullptr if none was found for the given name.

triggerButtonClick()

void AlertWindow::triggerButtonClick

(

const String &

buttonName

)

Invokes a click of one of the buttons.

setEscapeKeyCancels()

void AlertWindow::setEscapeKeyCancels

(

bool

shouldEscapeKeyCancel

)

If set to true and the window contains no buttons, then pressing the escape key will make the alert cancel its modal state.

By default this setting is true - turn it off if you don't want the box to respond to the escape key. Note that it is ignored if you have any buttons, and in that case you should give the buttons appropriate keypresses to trigger cancelling if you want to.

addTextEditor()

void AlertWindow::addTextEditor	(	const String &	name,
		const String &	initialContents,
		const String &	onScreenLabel = String(),
		bool	isPasswordBox = false )

Adds a textbox to the window for entering strings.

Parameters

name	an internal name for the text-box. This is the name to pass to the getTextEditorContents() method to find out what the user typed-in.
initialContents	a string to show in the text box when it's first shown
onScreenLabel	if this is non-empty, it will be displayed next to the text-box to label it.
isPasswordBox	if true, the text editor will display asterisks instead of the actual text

See also

getTextEditorContents

getTextEditorContents()

String AlertWindow::getTextEditorContents

(

const String &

nameOfTextEditor

)

const

Returns the contents of a named textbox.

After showing an AlertWindow that contains a text editor, this can be used to find out what the user has typed into it.

Parameters

nameOfTextEditor

the name of the text box that you're interested in

See also

addTextEditor

getTextEditor()

TextEditor * AlertWindow::getTextEditor

(

const String &

nameOfTextEditor

)

const

Returns a pointer to a textbox that was added with addTextEditor().

addComboBox()

void AlertWindow::addComboBox	(	const String &	name,
		const StringArray &	items,
		const String &	onScreenLabel = String() )

Adds a drop-down list of choices to the box.

After the box has been shown, the getComboBoxComponent() method can be used to find out which item the user picked.

Parameters

name	the label to use for the drop-down list
items	the list of items to show in it
onScreenLabel	if this is non-empty, it will be displayed next to the combo-box to label it.

See also

getComboBoxComponent

getComboBoxComponent()

ComboBox * AlertWindow::getComboBoxComponent

(

const String &

nameOfList

)

const

Returns a drop-down list that was added to the AlertWindow.

Parameters

nameOfList

the name that was passed into the addComboBox() method when creating the drop-down

Returns

the ComboBox component, or nullptr if none was found for the given name.

addTextBlock()

void AlertWindow::addTextBlock

(

const String &

text

)

Adds a block of text.

This is handy for adding a multi-line note next to a textbox or combo-box, to provide more details about what's going on.

addProgressBarComponent()

void AlertWindow::addProgressBarComponent	(	double &	progressValue,
		std::optional< ProgressBar::Style >	style = std::nullopt )

Adds a progress-bar to the window.

Parameters

progressValue	a variable that will be repeatedly checked while the dialog box is visible, to see how far the process has got. The value should be in the range 0 to 1.0
style	determines the style the ProgressBar should adopt. By default this use a style automatically chosen by the LookAndFeel, but you can force a particular style by passing a non-optional value.

See also

ProgressBar::setStyle

addCustomComponent()

void AlertWindow::addCustomComponent

(

Component *

component

)

Adds a user-defined component to the dialog box.

Parameters

component

the component to add - its size should be set up correctly before it is passed in. The caller is responsible for deleting the component later on - the AlertWindow won't delete it.

getNumCustomComponents()

int AlertWindow::getNumCustomComponents

(

)

const

Returns the number of custom components in the dialog box.

See also

getCustomComponent, addCustomComponent

getCustomComponent()

Component * AlertWindow::getCustomComponent

(

int

index

)

const

Returns one of the custom components in the dialog box.

Parameters

index

a value 0 to (getNumCustomComponents() - 1). Out-of-range indexes will return nullptr

See also

getNumCustomComponents, addCustomComponent

removeCustomComponent()

Component * AlertWindow::removeCustomComponent

(

int

index

)

Removes one of the custom components in the dialog box.

Note that this won't delete it, it just removes the component from the window

Parameters

index

a value 0 to (getNumCustomComponents() - 1). Out-of-range indexes will return nullptr

Returns

the component that was removed (or null)

See also

getNumCustomComponents, addCustomComponent

containsAnyExtraComponents()

bool AlertWindow::containsAnyExtraComponents

(

)

const

Returns true if the window contains any components other than just buttons.

showMessageBox()

static void JUCE_CALLTYPE AlertWindow::showMessageBox ( MessageBoxIconType iconType, const String & title, const String & message, const String & buttonText = String(), Component * associatedComponent = nullptr )

static

Shows a dialog box that just has a message and a single button to get rid of it.

The box is shown modally, and the method will block until the user has clicked the button (or pressed the escape or return keys).

Parameters

iconType	the type of icon to show
title	the headline to show at the top of the box
message	a longer, more descriptive message to show underneath the headline
buttonText	the text to show in the button - if this string is empty, the default string "OK" (or a localised version) will be used.
associatedComponent	if this is non-null, it specifies the component that the alert window should be associated with. Depending on the look and feel, this might be used for positioning of the alert window.

show()

static int JUCE_CALLTYPE AlertWindow::show ( const MessageBoxOptions & options )

static

Shows a dialog box using the specified options.

The box is shown modally, and the method will block until the user dismisses it.

Parameters

options

the options to use when creating the dialog.

Returns

the index of the button that was clicked.

See also

MessageBoxOptions

showAsync() [1/2]

static void JUCE_CALLTYPE AlertWindow::showAsync ( const MessageBoxOptions & options, ModalComponentManager::Callback * callback )

static

Shows a dialog box using the specified options.

The box will be displayed and placed into a modal state, but this method will return immediately, and the callback will be invoked later when the user dismisses the box.

Parameters

options	the options to use when creating the dialog.
callback	if this is non-null, the callback will receive a call to its modalStateFinished() when the box is dismissed with the index of the button that was clicked as its argument. The callback object will be owned and deleted by the system, so make sure that it works safely and doesn't keep any references to objects that might be deleted before it gets called.

See also

MessageBoxOptions

showAsync() [2/2]

static void JUCE_CALLTYPE AlertWindow::showAsync ( const MessageBoxOptions & options, std::function< void(int)> callback )

static

Shows a dialog box using the specified options.

The box will be displayed and placed into a modal state, but this method will return immediately, and the callback will be invoked later when the user dismisses the box.

Parameters

options	the options to use when creating the dialog.
callback	if this is non-null, the callback will be called when the box is dismissed with the index of the button that was clicked as its argument.

See also

MessageBoxOptions

showMessageBoxAsync()

static void JUCE_CALLTYPE AlertWindow::showMessageBoxAsync ( MessageBoxIconType iconType, const String & title, const String & message, const String & buttonText = String(), Component * associatedComponent = nullptr, ModalComponentManager::Callback * callback = nullptr )

static

Shows a dialog box that just has a message and a single button to get rid of it.

The box will be displayed and placed into a modal state, but this method will return immediately, and if a callback was supplied, it will be invoked later when the user dismisses the box.

Parameters

iconType	the type of icon to show
title	the headline to show at the top of the box
message	a longer, more descriptive message to show underneath the headline
buttonText	the text to show in the button - if this string is empty, the default string "OK" (or a localised version) will be used.
associatedComponent	if this is non-null, it specifies the component that the alert window should be associated with. Depending on the look and feel, this might be used for positioning of the alert window.
callback	if this is non-null, the callback will receive a call to its modalStateFinished() when the box is dismissed. The callback object will be owned and deleted by the system, so make sure that it works safely and doesn't keep any references to objects that might be deleted before it gets called.

showOkCancelBox()

static bool JUCE_CALLTYPE AlertWindow::showOkCancelBox ( MessageBoxIconType iconType, const String & title, const String & message, const String & button1Text = String(), const String & button2Text = String(), Component * associatedComponent = nullptr, ModalComponentManager::Callback * callback = nullptr )

static

Shows a dialog box with two buttons.

Ideal for ok/cancel or yes/no choices. The return key can also be used to trigger the first button, and the escape key for the second button.

If JUCE_MODAL_LOOPS_PERMITTED is not defined or the callback parameter is non-null, this function will return immediately. The object passed as the callback argument will receive the result of the alert window asynchronously. Otherwise, if JUCE_MODAL_LOOPS_PERMITTED is defined and the callback parameter is null, the box is shown modally, and the method will block until the user has clicked the button (or pressed the escape or return keys). This mode of operation can cause problems, especially in plugins, so it is not recommended.

Parameters

iconType	the type of icon to show
title	the headline to show at the top of the box
message	a longer, more descriptive message to show underneath the headline
button1Text	the text to show in the first button - if this string is empty, the default string "OK" (or a localised version of it) will be used.
button2Text	the text to show in the second button - if this string is empty, the default string "cancel" (or a localised version of it) will be used.
associatedComponent	if this is non-null, it specifies the component that the alert window should be associated with. Depending on the look and feel, this might be used for positioning of the alert window.
callback	if this is non-null, the menu will be launched asynchronously, returning immediately, and the callback will receive a call to its modalStateFinished() when the box is dismissed, with its parameter being 1 if the ok button was pressed, or 0 for cancel. The callback object will be owned and deleted by the system, so make sure that it works safely and doesn't keep any references to objects that might be deleted before it gets called.

Returns

true if button 1 was clicked, false if it was button 2. If the callback parameter is not null, the method always returns false, and the user's choice is delivered later by the callback.

showYesNoCancelBox()

static int JUCE_CALLTYPE AlertWindow::showYesNoCancelBox ( MessageBoxIconType iconType, const String & title, const String & message, const String & button1Text = String(), const String & button2Text = String(), const String & button3Text = String(), Component * associatedComponent = nullptr, ModalComponentManager::Callback * callback = nullptr )

static

Shows a dialog box with three buttons.

Ideal for yes/no/cancel boxes.

The escape key can be used to trigger the third button.

If JUCE_MODAL_LOOPS_PERMITTED is not defined or the callback parameter is non-null, this function will return immediately. The object passed as the callback argument will receive the result of the alert window asynchronously. Otherwise, if JUCE_MODAL_LOOPS_PERMITTED is defined and the callback parameter is null, the box is shown modally, and the method will block until the user has clicked the button (or pressed the escape or return keys). This mode of operation can cause problems, especially in plugins, so it is not recommended.

Parameters

iconType	the type of icon to show
title	the headline to show at the top of the box
message	a longer, more descriptive message to show underneath the headline
button1Text	the text to show in the first button - if an empty string, then "yes" will be used (or a localised version of it)
button2Text	the text to show in the first button - if an empty string, then "no" will be used (or a localised version of it)
button3Text	the text to show in the first button - if an empty string, then "cancel" will be used (or a localised version of it)
associatedComponent	if this is non-null, it specifies the component that the alert window should be associated with. Depending on the look and feel, this might be used for positioning of the alert window.
callback	if this is non-null, the menu will be launched asynchronously, returning immediately, and the callback will receive a call to its modalStateFinished() when the box is dismissed, with its parameter being 1 if the "yes" button was pressed, 2 for the "no" button, or 0 if it was cancelled. The callback object will be owned and deleted by the system, so make sure that it works safely and doesn't keep any references to objects that might be deleted before it gets called.

Returns

If the callback parameter has been set, this returns 0. Otherwise, it returns one of the following values:

• 0 if the third button was pressed (normally used for 'cancel')
• 1 if the first button was pressed (normally used for 'yes')
• 2 if the middle button was pressed (normally used for 'no')

showScopedAsync()

static ScopedMessageBox AlertWindow::showScopedAsync ( const MessageBoxOptions & options, std::function< void(int)> callback )

staticnodiscard

Shows an alert window using the specified options.

The box will be displayed and placed into a modal state, but this method will return immediately, and the callback will be invoked later when the user dismisses the box.

This function is always asynchronous, even if the callback is null.

The result codes returned by the alert window are as follows.

• One button:
  • button[0] returns 0
• Two buttons:
  • button[0] returns 1
  • button[1] returns 0
• Three buttons:
  • button[0] returns 1
  • button[1] returns 2
  • button[2] returns 0

Parameters

options	the options to use when creating the dialog.
callback	if this is non-null, the callback will receive a call to its modalStateFinished() when the box is dismissed with the index of the button that was clicked as its argument. The callback object will be owned and deleted by the system, so make sure that it works safely and doesn't keep any references to objects that might be deleted before it gets called.

Returns

a ScopedMessageBox instance. The message box will remain visible for no longer than the ScopedMessageBox remains alive.

See also

MessageBoxOptions

Referenced by StandalonePluginHolder::askUserToLoadState(), and StandalonePluginHolder::askUserToSaveState().

createAccessibilityHandler()

std::unique_ptr< AccessibilityHandler > AlertWindow::createAccessibilityHandler ( )

overridevirtual

Override this method to return a custom AccessibilityHandler for this component.

The default implementation creates and returns a AccessibilityHandler object with an unspecified role, meaning that it will be visible to accessibility clients but without a specific role, action callbacks or interfaces. To control how accessibility clients see and interact with your component subclass AccessibilityHandler, implement the desired behaviours, and return an instance of it from this method in your component subclass.

The accessibility handler you return here is guaranteed to be destroyed before its Component, so it's safe to store and use a reference back to the Component inside the AccessibilityHandler if necessary.

This function should rarely be called directly. If you need to query a component's accessibility handler, it's normally better to call getAccessibilityHandler(). The exception to this rule is derived implementations of createAccessibilityHandler(), which may find it useful to call the base class implementation, and then wrap or modify the result.

See also

getAccessibilityHandler

Reimplemented from Component.

paint()

void AlertWindow::paint ( Graphics & g )

overrideprotectedvirtual

Components can override this method to draw their content.

The paint() method gets called when a region of a component needs redrawing, either because the component's repaint() method has been called, or because something has happened on the screen that means a section of a window needs to be redrawn.

Any child components will draw themselves over whatever this method draws. If you need to paint over the top of your child components, you can also implement the paintOverChildren() method to do this.

If you want to cause a component to redraw itself, this is done asynchronously - calling the repaint() method marks a region of the component as "dirty", and the paint() method will automatically be called sometime later, by the message thread, to paint any bits that need refreshing. In JUCE (and almost all modern UI frameworks), you never redraw something synchronously.

You should never need to call this method directly - to take a snapshot of the component you could use createComponentSnapshot() or paintEntireComponent().

Parameters

g	the graphics context that must be used to do the drawing operations.

See also

repaint, paintOverChildren, Graphics

Reimplemented from Component.

mouseDown()

void AlertWindow::mouseDown ( const MouseEvent & event )

overrideprotectedvirtual

Called when a mouse button is pressed.

The MouseEvent object passed in contains lots of methods for finding out which button was pressed, as well as which modifier keys (e.g. shift, ctrl) were held down at the time.

Once a button is held down, the mouseDrag method will be called when the mouse moves, until the button is released.

Parameters

event

details about the position and status of the mouse event, including the source component in which it occurred

See also

mouseUp, mouseDrag, mouseDoubleClick, contains

Reimplemented from MouseListener.

mouseDrag()

void AlertWindow::mouseDrag ( const MouseEvent & event )

overrideprotectedvirtual

Called when the mouse is moved while a button is held down.

When a mouse button is pressed inside a component, that component receives mouseDrag callbacks each time the mouse moves, even if the mouse strays outside the component's bounds.

Parameters

event

details about the position and status of the mouse event, including the source component in which it occurred

See also

mouseDown, mouseUp, mouseMove, contains, setDragRepeatInterval

Reimplemented from MouseListener.

keyPressed()

bool AlertWindow::keyPressed ( const KeyPress & key )

overrideprotectedvirtual

Called when a key is pressed.

When a key is pressed, the component that has the keyboard focus will have this method called. Remember that a component will only be given the focus if its setWantsKeyboardFocus() method has been used to enable this.

If your implementation returns true, the event will be consumed and not passed on to any other listeners. If it returns false, the key will be passed to any KeyListeners that have been registered with this component. As soon as one of these returns true, the process will stop, but if they all return false, the event will be passed upwards to this component's parent, and so on.

The default implementation of this method does nothing and returns false.

See also

keyStateChanged, getCurrentlyFocusedComponent, addKeyListener

Reimplemented from Component.

lookAndFeelChanged()

void AlertWindow::lookAndFeelChanged ( )

overrideprotectedvirtual

Called to let the component react to a change in the look-and-feel setting.

When the look-and-feel is changed for a component, this method, repaint(), and colourChanged() are called on the original component and all its children recursively.

It can also be triggered manually by the sendLookAndFeelChange() method, in case an application uses a LookAndFeel class that might have changed internally.

See also

sendLookAndFeelChange, getLookAndFeel

Reimplemented from Component.

userTriedToCloseWindow()

void AlertWindow::userTriedToCloseWindow ( )

overrideprotectedvirtual

For components on the desktop, this is called if the system wants to close the window.

This is a signal that either the user or the system wants the window to close. The default implementation of this method will trigger an assertion to warn you that your component should do something about it, but you can override this to ignore the event if you want.

Reimplemented from Component.

getDesktopWindowStyleFlags()

int AlertWindow::getDesktopWindowStyleFlags ( ) const

overrideprotectedvirtual

Reimplemented from TopLevelWindow.

getDesktopScaleFactor()

float AlertWindow::getDesktopScaleFactor ( ) const

overrideprotectedvirtual

Returns the default scale factor to use for this component when it is placed on the desktop.

The default implementation of this method just returns the value from Desktop::getGlobalScaleFactor(), but it can be overridden if a particular component has different requirements. The method only used if this component is added to the desktop - it has no effect for child components.

Reimplemented from Component.

References Desktop::getGlobalScaleFactor(), and Desktop::getInstance().

Member Data Documentation

NoIcon

auto AlertWindow::NoIcon = MessageBoxIconType::NoIcon

staticconstexpr

QuestionIcon

auto AlertWindow::QuestionIcon = MessageBoxIconType::QuestionIcon

staticconstexpr

WarningIcon

auto AlertWindow::WarningIcon = MessageBoxIconType::WarningIcon

staticconstexpr

Referenced by StandalonePluginHolder::askUserToLoadState(), and StandalonePluginHolder::askUserToSaveState().

InfoIcon

auto AlertWindow::InfoIcon = MessageBoxIconType::InfoIcon

staticconstexpr

---

The documentation for this class was generated from the following file:

• juce_AlertWindow.h