Wt::WPushButton Class Reference

A widget that represents a push button. More...

#include <Wt/WPushButton.h>

Inheritance diagram for Wt::WPushButton:

Public Member Functions
	WPushButton ()
	Creates a push button.
	WPushButton (const WString &text)
	Creates a push button with given label text. More...
	WPushButton (const WString &text, TextFormat textFormat)
	Creates a push button with given label text.
void	setDefault (bool enabled)
	Sets the default property. More...
bool	isDefault () const
	Returns whether the button is a default button. More...
void	setCheckable (bool checkable)
	Sets whether the button is checkable. More...
bool	isCheckable () const
	Returns whether a button is checkable. More...
void	setChecked (bool checked)
	Sets the button state. More...
void	setChecked ()
	Checks the button. More...
void	setUnChecked ()
	Unchecks the button. More...
bool	isChecked () const
	Returns the button state. More...
bool	setText (const WString &text)
	Sets the button text. More...
const WString &	text () const
	Returns the button text. More...
bool	setTextFormat (TextFormat format)
	Sets the text format. More...
TextFormat	textFormat () const
	Returns the text format. More...
void	setIcon (const WLink &link)
	Sets an icon. More...
WLink	icon () const
	Returns the icon. More...
void	setLink (const WLink &link)
	Sets a destination link. More...
const WLink &	link () const
	Returns the destination link. More...
virtual WString	valueText () const override
	Returns the current value. More...
virtual void	setValueText (const WString &value) override
	Sets the current value. More...
void	setMenu (std::unique_ptr< WPopupMenu > menu)
	Links a popup menu to the button. More...
WPopupMenu *	menu () const
	Returns an associated popup menu. More...
virtual void	refresh () override
	Refresh the widget. More...
EventSignal &	checked ()
	Signal emitted when the button gets checked. More...
EventSignal &	unChecked ()
	Signal emitted when the button gets unchecked. More...
virtual bool	setFirstFocus () override
	Set focus on the widget's first descendant. More...
Public Member Functions inherited from Wt::WFormWidget
	WFormWidget ()
	Creates a WFormWidget.
	~WFormWidget ()
	Destructor.
WLabel *	label () const
	Returns the label associated with this widget. More...
virtual void	setHidden (bool hidden, const WAnimation &animation=WAnimation()) override
	Sets the hidden state of this widget. More...
void	setValidator (const std::shared_ptr< WValidator > &validator)
	Sets a validator for this field. More...
virtual std::shared_ptr< WValidator >	validator () const
	Returns the validator.
virtual ValidationState	validate ()
	Validates the field. More...
void	setEnabled (bool enabled)
	Sets whether the widget is enabled. More...
virtual void	setReadOnly (bool readOnly)
	Sets the element read-only. More...
bool	isReadOnly () const
	Returns whether the form element is read-only. More...
virtual void	setPlaceholderText (const WString &placeholder)
	Sets the placeholder text. More...
const WString &	placeholderText () const
	Returns the placeholder text. More...
EventSignal &	changed ()
	Signal emitted when the value was changed. More...
Signal< WValidator::Result > &	validated ()
	Signal emitted when the widget is being validated. More...
virtual void	setToolTip (const WString &text, TextFormat textFormat=TextFormat::Plain) override
	Sets a tooltip. More...
virtual bool	canReceiveFocus () const override
	Returns whether the widget can receive focus. More...
virtual int	tabIndex () const override
	Returns the tab index. More...
Public Member Functions inherited from Wt::WInteractWidget
	WInteractWidget ()
	Create an InteractWidget.
EventSignal< WKeyEvent > &	keyWentDown ()
	Event signal emitted when a keyboard key is pushed down. More...
EventSignal< WKeyEvent > &	keyPressed ()
	Event signal emitted when a "character" was entered. More...
EventSignal< WKeyEvent > &	keyWentUp ()
	Event signal emitted when a keyboard key is released. More...
EventSignal &	enterPressed ()
	Event signal emitted when enter was pressed. More...
EventSignal &	escapePressed ()
	Event signal emitted when escape was pressed. More...
EventSignal< WMouseEvent > &	clicked ()
	Event signal emitted when the primary mouse button was clicked on this widget. More...
EventSignal< WMouseEvent > &	doubleClicked ()
	Event signal emitted when the primary mouse button was double clicked on this widget. More...
EventSignal< WMouseEvent > &	mouseWentDown ()
	Event signal emitted when a mouse button was pushed down on this widget. More...
EventSignal< WMouseEvent > &	mouseWentUp ()
	Event signal emitted when a mouse button was released on this widget. More...
EventSignal< WMouseEvent > &	mouseWentOut ()
	Event signal emitted when the mouse went out of this widget. More...
EventSignal< WMouseEvent > &	mouseWentOver ()
	Event signal emitted when the mouse entered this widget. More...
EventSignal< WMouseEvent > &	mouseMoved ()
	Event signal emitted when the mouse moved over this widget. More...
EventSignal< WMouseEvent > &	mouseDragged ()
	Event signal emitted when the mouse is dragged over this widget. More...
EventSignal< WMouseEvent > &	mouseWheel ()
	Event signal emitted when the mouse scroll wheel was used. More...
EventSignal< WTouchEvent > &	touchStarted ()
	Event signal emitted when a finger is placed on the screen. More...
EventSignal< WTouchEvent > &	touchEnded ()
	Event signal emitted when a finger is removed from the screen. More...
EventSignal< WTouchEvent > &	touchMoved ()
	Event signal emitted when a finger, which is already placed on the screen, is moved across the screen. More...
EventSignal< WGestureEvent > &	gestureStarted ()
	Event signal emitted when a gesture is started. More...
EventSignal< WGestureEvent > &	gestureChanged ()
	Event signal emitted when a gesture is changed. More...
EventSignal< WGestureEvent > &	gestureEnded ()
	Event signal emitted when a gesture is ended. More...
void	setDraggable (const std::string &mimeType, WWidget *dragWidget=nullptr, bool isDragWidgetOnly=false, WObject *sourceWidget=nullptr)
	Configure dragging for drag and drop. More...
void	unsetDraggable ()
	Disable drag & drop for this widget. More...
void	setMouseOverDelay (int delay)
	Sets a delay for the mouse over event. More...
int	mouseOverDelay () const
	Returns the mouse over signal delay. More...
virtual void	setPopup (bool popup) override
	Lets the widget overlay over other sibling widgets. More...
virtual void	load () override
	Loads content just before the widget is used. More...
virtual bool	isEnabled () const override
	Returns whether the widget is enabled. More...
Public Member Functions inherited from Wt::WWebWidget
	WWebWidget ()
	Construct a WebWidget.
virtual std::vector< WWidget * >	children () const override
	Returns child widgets. More...
Signal &	childrenChanged ()
	Signal emitted when children have been added or removed. More...
virtual void	setPositionScheme (PositionScheme scheme) override
	Sets the CSS position scheme. More...
virtual PositionScheme	positionScheme () const override
	Returns the CSS position scheme. More...
virtual void	setOffsets (const WLength &offset, WFlags< Side > sides=AllSides) override
	Sets CSS offsets for a non-statically positioned widget. More...
virtual WLength	offset (Side s) const override
	Returns a CSS offset. More...
virtual void	resize (const WLength &width, const WLength &height) override
	Resizes the widget. More...
virtual WLength	width () const override
	Returns the width. More...
virtual WLength	height () const override
	Returns the height. More...
virtual void	setMinimumSize (const WLength &width, const WLength &height) override
	Sets a minimum size. More...
virtual WLength	minimumWidth () const override
	Returns the minimum width. More...
virtual WLength	minimumHeight () const override
	Returns the minimum height. More...
virtual void	setMaximumSize (const WLength &width, const WLength &height) override
	Sets a maximum size. More...
virtual WLength	maximumWidth () const override
	Returns the maximum width. More...
virtual WLength	maximumHeight () const override
	Returns the maximum height. More...
virtual void	setLineHeight (const WLength &height) override
	Sets the CSS line height for contained text.
virtual WLength	lineHeight () const override
	Returns the CSS line height for contained text. More...
virtual void	setFloatSide (Side s) override
	Specifies a CSS float side. More...
virtual Side	floatSide () const override
	Returns the CSS float side. More...
virtual void	setClearSides (WFlags< Side > sides) override
	Sets the sides that should be cleared of floats. More...
virtual WFlags< Side >	clearSides () const override
	Returns the sides that should remain empty. More...
virtual void	setMargin (const WLength &margin, WFlags< Side > sides=AllSides) override
	Sets CSS margins around the widget. More...
virtual WLength	margin (Side side) const override
	Returns a CSS margin set. More...
virtual void	setHiddenKeepsGeometry (bool enabled) override
	Sets whether the widget keeps its geometry when hidden. More...
virtual bool	hiddenKeepsGeometry () const override
	Returns whether the widget keeps its geometry when hidden. More...
virtual bool	isHidden () const override
	Returns whether the widget is set hidden. More...
virtual bool	isVisible () const override
	Returns whether the widget is visible. More...
virtual void	setDisabled (bool disabled) override
	Sets whether the widget is disabled. More...
virtual bool	isDisabled () const override
	Returns whether the widget is set disabled. More...
virtual bool	isPopup () const override
	Returns whether the widget is overlayed. More...
virtual void	setInline (bool isInline) override
	Sets whether the widget is displayed inline or as a block. More...
virtual bool	isInline () const override
	Returns whether the widget is displayed inline or as block. More...
virtual void	setDecorationStyle (const WCssDecorationStyle &style) override
	Sets a CSS decoration style. More...
virtual WCssDecorationStyle &	decorationStyle () override
	Returns the decoration style of this widget. More...
virtual void	setStyleClass (const WString &styleClass) override
	Sets (one or more) CSS style classes. More...
virtual WString	styleClass () const override
	Returns the CSS style class. More...
virtual void	addStyleClass (const WString &styleClass, bool force=false) override
	Adds a CSS style class. More...
virtual void	removeStyleClass (const WString &styleClass, bool force=false) override
	Removes a CSS style class. More...
virtual bool	hasStyleClass (const WString &styleClass) const override
	Returns whether the widget has a style class.
virtual void	setVerticalAlignment (AlignmentFlag alignment, const WLength &length=WLength()) override
	Sets the vertical alignment. More...
virtual AlignmentFlag	verticalAlignment () const override
	Returns the vertical alignment. More...
virtual WLength	verticalAlignmentLength () const override
	Returns the fixed vertical alignment that was set. More...
virtual void	setDeferredToolTip (bool enable, TextFormat textFormat=TextFormat::Plain) override
	Enable deferred tooltip. More...
virtual WString	toolTip () const override
	Returns the tooltip.
virtual void	setAttributeValue (const std::string &name, const WString &value) override
	Sets an attribute value. More...
virtual WString	attributeValue (const std::string &name) const override
	Returns an attribute value. More...
virtual void	setJavaScriptMember (const std::string &name, const std::string &value) override
	Sets a JavaScript member. More...
virtual std::string	javaScriptMember (const std::string &name) const override
	Returns the value of a JavaScript member. More...
virtual void	callJavaScriptMember (const std::string &name, const std::string &args) override
	Calls a JavaScript member. More...
virtual bool	loaded () const override
	Returns whether this widget has been loaded. More...
virtual void	setId (const std::string &id) override
	Sets the CSS Id. More...
virtual WWidget *	find (const std::string &name) override
	Finds a descendent widget by name. More...
virtual WWidget *	findById (const std::string &id) override
	Finds a descendent widget by id.
virtual void	setSelectable (bool selectable) override
	Sets as selectable. More...
virtual void	doJavaScript (const std::string &javascript) override
	Executes the given JavaScript statements when the widget is rendered or updated. More...
virtual const std::string	id () const override
	Returns the (unique) identifier for this object. More...
void	setLoadLaterWhenInvisible (bool)
	Change the way the widget is loaded when invisible. More...
std::string	htmlTagName () const
	returns the current html tag name More...
void	setHtmlTagName (const std::string &tag)
	set the custom HTML tag name More...
virtual void	setCanReceiveFocus (bool enabled) override
	Sets whether the widget can receive focus. More...
virtual void	setFocus (bool focus) override
	Sets focus. More...
virtual bool	hasFocus () const override
	Returns whether the widget currently has the focus.
virtual void	setTabIndex (int index) override
	Sets the tab index. More...
EventSignal &	blurred ()
	Signal emitted when the widget lost focus. More...
EventSignal &	focussed ()
	Signal emitted when the widget recieved focus. More...
virtual bool	scrollVisibilityEnabled () const final override
	Returns whether scroll visibility detection is enabled for this widget. More...
virtual void	setScrollVisibilityEnabled (bool enabled) final override
	Sets whether scroll visibility detection is enabled for this widget. More...
virtual int	scrollVisibilityMargin () const final override
	Returns the margin around the viewport within which the widget is considered visible. More...
virtual void	setScrollVisibilityMargin (int margin) final override
	Sets the margin around the viewport within which the widget is considered visible. More...
virtual Signal< bool > &	scrollVisibilityChanged () final override
	Signal triggered when the scroll visibility of this widget changes. More...
virtual bool	isScrollVisible () const final override
	Returns whether this widget is currently considered scroll visible. More...
virtual void	setThemeStyleEnabled (bool enabled) final override
	Sets whether theme styling for a widget is enabled or disabled. More...
virtual bool	isThemeStyleEnabled () const final override
	Returns whether this widget is currently styled by the chosen theme. More...
virtual void	setObjectName (const std::string &name) override
	Sets an object name. More...
void	setFocus ()
	Sets focus. More...
virtual void	setFocus (bool focus)=0
	Sets focus. More...
Public Member Functions inherited from Wt::WWidget
virtual	~WWidget ()
	Destructor. More...
WWidget *	parent () const
	Returns the parent widget.
virtual std::unique_ptr< WWidget >	removeWidget (WWidget *widget)
	Removes a child widget.
template<typename Widget >
std::unique_ptr< Widget >	removeWidget (Widget *widget)
	Removes a child widget. More...
std::unique_ptr< WWidget >	removeFromParent ()
	Removes the widget from its parent. More...
void	setWidth (const WLength &width)
	Sets the width. More...
void	setHeight (const WLength &height)
	Sets the height. More...
virtual void	positionAt (const WWidget *widget, Orientation orientation=Orientation::Vertical)
	Positions a widget next to another widget. More...
virtual void	toggleStyleClass (const WString &styleClass, bool add, bool force=false)
	Toggles a CSS style class.
std::string	jsRef () const
	Returns a JavaScript expression to the corresponding DOM node. More...
void	setFocus ()
	Sets focus. More...
virtual void	acceptDrops (const std::string &mimeType, const WString &hoverStyleClass=WString())
	Sets a mime type to be accepted for dropping. More...
virtual void	stopAcceptDrops (const std::string &mimeType)
	Indicates that a mime type is no longer accepted for dropping. More...
virtual void	htmlText (std::ostream &out)
	Streams the (X)HTML representation. More...
bool	isRendered () const
	Returns whether the widget is rendered. More...
void	hide ()
	Hides the widget. More...
void	animateHide (const WAnimation &animation)
	Hides the widget using an animation. More...
void	show ()
	Shows the widget. More...
void	animateShow (const WAnimation &animation)
	Shows the widget using an animation. More...
void	enable ()
	Enables the widget. More...
void	disable ()
	Disable thes widget. More...
bool	layoutSizeAware () const
	Returns whether the widget is layout size aware. More...
Public Member Functions inherited from Wt::WObject
void	addChild (std::unique_ptr< WObject > child)
	Add a child WObject whose lifetime is determined by this WObject.
template<typename Child >
Child *	addChild (std::unique_ptr< Child > child)
	Add a child WObject, returning a raw pointer. More...
std::unique_ptr< WObject >	removeChild (WObject *child)
	Remove a child WObject, so its lifetime is no longer determined by this WObject.
template<typename Child >
std::unique_ptr< Child >	removeChild (Child *child)
	Remove a child WObject, so its lifetime is no longer determined by this WObject. More...
virtual std::string	objectName () const
	Returns the object name. More...
void	resetLearnedSlots ()
	Resets learned stateless slot implementations. More...
template<class T >
void	resetLearnedSlot (void(T::*method)())
	Resets a learned stateless slot implementation. More...
template<class T >
WStatelessSlot *	implementStateless (void(T::*method)())
	Declares a slot to be stateless and learn client-side behaviour on first invocation. More...
template<class T >
WStatelessSlot *	implementStateless (void(T::*method)(), void(T::*undoMethod)())
	Declares a slot to be stateless and learn client-side behaviour in advance. More...
void	isNotStateless ()
	Marks the current function as not stateless. More...
template<class T >
WStatelessSlot *	implementJavaScript (void(T::*method)(), const std::string &jsCode)
	Provides a JavaScript implementation for a method. More...
Public Member Functions inherited from Wt::Core::observable
	observable () noexcept
	Default constructor.
virtual	~observable ()
	Destructor. More...
template<typename... Args, typename C >
auto	bindSafe (void(C::*method)(Args...)) noexcept
	Protects a method call against object destruction. More...
template<typename... Args, typename C >
auto	bindSafe (void(C::*method)(Args...) const) const noexcept
	Protects a const method call against object destruction. More...
template<typename Function >
auto	bindSafe (const Function &function) noexcept
	Protects a function against object destruction. More...

Protected Member Functions
virtual void	propagateSetEnabled (bool enabled) override
	Propagates that a widget was enabled or disabled through children. More...
virtual void	enableAjax () override
	Progresses to an Ajax-enabled widget. More...
Protected Member Functions inherited from Wt::WFormWidget
virtual void	render (WFlags< RenderFlag > flags) override
	Renders the widget. More...
Protected Member Functions inherited from Wt::WWebWidget
virtual WStatelessSlot *	getStateless (Method method) override
	On-demand stateless slot implementation. More...
Protected Member Functions inherited from Wt::WWidget
void	setLayoutSizeAware (bool sizeAware)
	Sets the widget to be aware of its size set by a layout manager. More...
virtual void	layoutSizeChanged (int width, int height)
	Virtual method that indicates a size change. More...
	WWidget ()
	Creates a widget.
virtual void	dropEvent (WDropEvent dropEvent)
	Handles a drop event. More...
virtual int	boxPadding (Orientation orientation) const
	Returns the widget's built-in padding. More...
virtual int	boxBorder (Orientation orientation) const
	Returns the widget's built-in border width. More...
void	scheduleRender (WFlags< RepaintFlag > flags=None)
	Schedules rerendering of the widget. More...

Additional Inherited Members
Public Types inherited from Wt::WObject
typedef void(WObject::*	Method) ()
	Typedef for a WObject method without arguments.
Static Public Member Functions inherited from Wt::WWebWidget
static std::string	jsStringLiteral (const std::string &v, char delimiter='\'')
	Turn a CharEncoding::UTF8 encoded string into a JavaScript string literal. More...
Static Public Member Functions inherited from Wt::WWidget
static WString	tr (const char *key)
	Short hand for WString::tr() More...

Detailed Description

A widget that represents a push button.

To act on a button click, connect a slot to the clicked() signal.

Usage example:

// container is a WContainerWidget*
Wt::WPushButton *ok =
  container->addWidget(std::make_unique<Wt::WPushButton>("Okay"));
ok->clicked().connect(ok, &Wt::WPushButton::disable);
ok->clicked().connect(this, &MyClass::processData);

WPushButton is an inline widget.

CSS

The widget corresponds to the HTML <button> tag (with some exceptions in the bootstrap theme).

Constructor & Destructor Documentation

WPushButton()

Wt::WPushButton::WPushButton

(

const WString &

text

)

Creates a push button with given label text.

The default text format is TextFormat::Plain.

Member Function Documentation

checked()

EventSignal & Wt::WPushButton::checked

(

)

Signal emitted when the button gets checked.

This signal is emitted when the user checks the button.

You can use the clicked() signal to react to any change of the button state.

See also

setCheckable()

enableAjax()

void Wt::WPushButton::enableAjax ( )

overrideprotectedvirtual

Progresses to an Ajax-enabled widget.

This method is called when the progressive bootstrap method is used, and support for AJAX has been detected. The default behavior will upgrade the widget's event handling to use AJAX instead of full page reloads, and propagate the call to its children.

You may want to reimplement this method if you want to make changes to widget when AJAX is enabled. You should always call the base implementation.

See also

WApplication::enableAjax()

Reimplemented from Wt::WFormWidget.

icon()

WLink Wt::WPushButton::icon

(

)

const

Returns the icon.

See also

setIcon()

isCheckable()

bool Wt::WPushButton::isCheckable

(

)

const

Returns whether a button is checkable.

See also

setCheckable()

isChecked()

bool Wt::WPushButton::isChecked

(

)

const

Returns the button state.

See also

setChecked()

isDefault()

bool Wt::WPushButton::isDefault

(

)

const

Returns whether the button is a default button.

See also

setDefault()

link()

const WLink& Wt::WPushButton::link

(

)

const

Returns the destination link.

See also

setLink()

menu()

WPopupMenu* Wt::WPushButton::menu

(

)

const

Returns an associated popup menu.

See also

setMenu()

propagateSetEnabled()

void Wt::WPushButton::propagateSetEnabled ( bool  enabled )

overrideprotectedvirtual

Propagates that a widget was enabled or disabled through children.

When enabling or disabling a widget, you usually also want to disable contained children. This method is called by setDisabled() to propagate its state to all children.

You may want to reimplement this method if they wish to render differently when a widget is disabled. The default implementation will propagate the signal to all children.

Reimplemented from Wt::WFormWidget.

refresh()

void Wt::WPushButton::refresh ( )

overridevirtual

Refresh the widget.

The refresh method is invoked when the locale is changed using WApplication::setLocale() or when the user hit the refresh button.

The widget must actualize its contents in response.

Note

This does not rerender the widget! Calling refresh() usually does not have any effect (unless you've reimplemented refresh() to attach to it an effect).

Reimplemented from Wt::WFormWidget.

setCheckable()

void Wt::WPushButton::setCheckable

(

bool

checkable

)

Sets whether the button is checkable.

A checkable button can be checked and unchecked, and clicking will toggle between these two states.

See also

setChecked(bool)

setChecked() [1/2]

void Wt::WPushButton::setChecked

(

)

Checks the button.

Does not emit the checked() signal.

See also

setChecked(bool)

setChecked() [2/2]

void Wt::WPushButton::setChecked

(

bool

checked

)

Sets the button state.

This is ignored for a button which is not checkable.

This method does not emit one of the checked() or unChecked() signals.

See also

setCheckable(), setChecked(), setUnChecked()

setDefault()

void Wt::WPushButton::setDefault

(

bool

enabled

)

Sets the default property.

This has only a functional meaning for a button in a dialog footer, as it becomes associated with pressing 'enter' in the dialog.

A default button may be rendered in a different style, depending on the theme.

setFirstFocus()

bool Wt::WPushButton::setFirstFocus ( )

overridevirtual

Set focus on the widget's first descendant.

Set focus on the widget itself, or on a first descendant which can receive focus.

Returns whether focus could be set.

Reimplemented from Wt::WWebWidget.

setIcon()

void Wt::WPushButton::setIcon

(

const WLink &

link

)

Sets an icon.

The icon is placed to the left of the text.

setLink()

void Wt::WPushButton::setLink

(

const WLink &

link

)

Sets a destination link.

This method can be used to make the button behave like a WAnchor (or conversely, an anchor look like a button) and redirect to another URL when clicked.

The link may be to a URL, a resource, or an internal path.

By default, a button does not link to an URL and you should listen to the clicked() signal to react to a click event.

Warning

In Bootstrap theme, you should set a link before it's rendered since it commit's the button to be rendered as an anchor. (see also http://redmine.emweb.be/issues/1802).

setMenu()

void Wt::WPushButton::setMenu

(

std::unique_ptr< WPopupMenu >

menu

)

Links a popup menu to the button.

When the button is clicked, the linked popup menu is shown.

setText()

bool Wt::WPushButton::setText

(

const WString &

text

)

Sets the button text.

The default text format is Wt::TextFormat::Plain.

When the current text format is Wt::TextFormat::XHTML, and text is literal (not created using WString::tr()), it is parsed using an XML parser which discards malicious tags and attributes silently. When the parser encounters an XML parse error, the textFormat is changed to Wt::TextFormat::Plain. If text is not a literal, the same parser is applied only when the text is resolved.

Returns whether the text could be set using the current textFormat. A return value of false indicates that the text format was changed in order to be able to accept the new text.

See also

setTextFormat()

setTextFormat()

bool Wt::WPushButton::setTextFormat

(

TextFormat

format

)

Sets the text format.

The textFormat controls how the string should be interpreted: either as plain text, which is displayed literally, or as XHTML-markup.

When changing the textFormat to Wt::TextFormat::XHTML, and the current text is literal (not created using WString::tr()), the current text is parsed using an XML parser which discards malicious tags and attributes silently. When the parser encounters an XML parse error, the textFormat is left unchanged, and this method returns false.

Returns whether the textFormat could be set for the current text.

The default format is Wt::TextFormat::Plain.

setUnChecked()

void Wt::WPushButton::setUnChecked

(

)

Unchecks the button.

Does not emit the unChecked() signal.

See also

setChecked(bool)

setValueText()

void Wt::WPushButton::setValueText ( const WString &  value )

overridevirtual

Sets the current value.

Has no effect, since a button has not value.

Implements Wt::WFormWidget.

text()

const WString& Wt::WPushButton::text

(

)

const

Returns the button text.

See also

setText()

textFormat()

TextFormat Wt::WPushButton::textFormat

(

)

const

Returns the text format.

See also

setTextFormat()

unChecked()

EventSignal & Wt::WPushButton::unChecked

(

)

Signal emitted when the button gets unchecked.

This signal is emitted when the user unchecks the button.

You can use the clicked() signal to react to any change of the button state.

See also

setCheckable()

valueText()

WString Wt::WPushButton::valueText ( ) const

overridevirtual

Returns the current value.

Returns an empty string, since a button has no value.

Implements Wt::WFormWidget.