h1(#wxbutton). Wx::Button

A button is a control that contains a text string,
and is one of the most common elements of a GUI. It may be placed on a
 "dialog box":dialog.html or "panel":panel.html, or indeed
almost any other window.

h2. Derived from

"Control":control.html

"Window":window.html

"EvtHandler":evthandler.html

"Object":object.html

h2. Window styles


|@BU_LEFT@|Left-justifies the label. Windows and GTK+ only.|
|@BU_TOP@|Aligns the label to the top of the button. Windows and GTK+ only.|
|@BU_RIGHT@|Right-justifies the bitmap label. Windows and GTK+ only.|
|@BU_BOTTOM@|Aligns the label to the bottom of the button. Windows and GTK+ only.|
|@BU_EXACTFIT@|Creates the button as small as possible instead of making it of the standard size (which is the default behaviour ).|
|@NO_BORDER@|Creates a flat button. Windows and GTK+ only.|


See also "window styles overview":windowstyles.html.

h2. Event handling


|*evt_button(id) { | event | ... }*|Process a EVT_COMMAND_BUTTON_CLICKED event,when the button is clicked.|


h2. See also

"BitmapButton":bitmapbutton.html

<div id="methods">

h2. Methods

* "Button.new":#Button_new
* "Button#create":#Button_create
* "Button#get_label":#Button_getlabel
* "Button#get_default_size":#Button_getdefaultsize
* "Button#set_default":#Button_setdefault
* "Button#set_label":#Button_setlabel

</div>


h3(#Button_new). Button.new

  *Button.new*(%(arg-type)"Window":window.html% parent,  %(arg-type)Integer% id,  %(arg-type)String% label = '', 
             %(arg-type)"Point":point.html% pos = DEFAULT_POSITION, 
             %(arg-type)"Size":size.html% size = DEFAULT_SIZE, 
             %(arg-type)Integer% style = 0, 
             %(arg-type)"Validator":validator.html% validator = DEFAULT_VALIDATOR, 
             %(arg-type)String% name = "button")

Constructor, creating and showing a button.

The preferred way to create standard buttons is to use default value of
label. If no label is supplied and id is one of standard IDs from
"this list":stockitems.html, standard label will be used. In addition to
that, the button will be decorated with stock icons under GTK+ 2.

h4. Parameters

* _parent_ Parent window. Must not be NULL.
* _id_ Button identifier. A value of @ID_ANY@ indicates a default value.
* _label_ Text to be displayed on the button.
* _pos_ Button position.
* _size_ Button size. If the default size is specified then the button is sized
appropriately for the text.
* _style_ Window style. See "Button":button.html.
* _validator_ Window validator.
* _name_ Window name.

h4. See also

"Button#create":button.html#Button_create, "Validator":validator.html

  *destructor*()

Destructor, destroying the button.

h3(#Button_create). Button#create

 Boolean *create*(%(arg-type)"Window":window.html% parent,  %(arg-type)Integer% id,  %(arg-type)String% label = '', 
                %(arg-type)"Point":point.html% pos = DEFAULT_POSITION, 
                %(arg-type)"Size":size.html% size = DEFAULT_SIZE, 
                %(arg-type)Integer% style = 0, 
                %(arg-type)"Validator":validator.html% validator, 
                %(arg-type)String% name = "button")

Button creation function for two-step creation. For more details, see
"Button.new":button.html#Button_new.

h3(#Button_getlabel). Button#get_label

 String *get_label*()

Returns the string label for the button.

h4. Return value

The button's label.

h4. See also

"Button#set_label":button.html#Button_setlabel

h3(#Button_getdefaultsize). Button#get_default_size

 "Size":size.html *get_default_size*()

Returns the default size for the buttons. It is advised to make all the dialog
buttons of the same size and this function allows to retrieve the (platform and
current font dependent size) which should be the best suited for this.

h3(#Button_setdefault). Button#set_default

  *set_default*()

This sets the button to be the default item for the panel or dialog
box.

h4. Remarks

Under Windows, only dialog box buttons respond to this function.  As
normal under Windows and Motif, pressing return causes the default button to
be depressed when the return key is pressed. See also "Window#set_focus":window.html#Window_setfocus which sets the keyboard focus for windows and text panel items, and "TopLevelWindow#set_default_item":toplevelwindow.html#TopLevelWindow_setdefaultitem.

Note that under Motif, calling this function immediately after
creation of a button and before the creation of other buttons
will cause misalignment of the row of buttons, since default
buttons are larger. To get around this, call _SetDefault_ after you have created a row of buttons: Widgets will
then set the size of all buttons currently on the panel to
the same size.

h3(#Button_setlabel). Button#set_label

  *set_label*(%(arg-type)String% label)

Sets the string label for the button.

h4. Parameters

* _label_ The label to set.

h4. See also

"Button#get_label":button.html#Button_getlabel