A combination of the input widget and a menu button. More...

Inheritance diagram for Fl_Input_Choice:

Public Member Functions
void	add (const char *s)
	Adds an item to the menu.

int	changed () const
	Returns the combined changed() state of the input and menu button widget.

void	clear ()
	Removes all items from the menu.

void	clear_changed ()
	Clears the changed() state of both input and menu button widgets.

Fl_Boxtype	down_box () const
	Gets the box type of the menu button.

void	down_box (Fl_Boxtype b)
	Sets the box type of the menu button.

	Fl_Input_Choice (int X, int Y, int W, int H, const char *L=0)
	Creates a new Fl_Input_Choice widget using the given position, size, and label string.

Fl_Input *	input ()
	Returns a pointer to the internal Fl_Input widget.

const Fl_Menu_Item *	menu ()
	Gets the Fl_Menu_Item array used for the menu.

void	menu (const Fl_Menu_Item *m)
	Sets the Fl_Menu_Item array used for the menu.

Fl_Menu_Button *	menubutton ()
	Returns a pointer to the internal Fl_Menu_Button widget.

void	resize (int X, int Y, int W, int H) FL_OVERRIDE
	Resizes the Fl_Input_Choice widget.

void	set_changed ()
	Sets the changed() state of both input and menu button widgets to the specified value.

Fl_Color	textcolor () const
	Gets the Fl_Input text field's text color.

void	textcolor (Fl_Color c)
	Sets the Fl_Input text field's text color to `c`.

Fl_Font	textfont () const
	Gets the Fl_Input text field's font style.

void	textfont (Fl_Font f)
	Sets the Fl_Input text field's font style to `f`.

Fl_Fontsize	textsize () const
	Gets the Fl_Input text field's font size.

void	textsize (Fl_Fontsize s)
	Sets the Fl_Input text field's font size to `s`.

int	update_menubutton ()
	Updates the menubutton with the string value in Fl_Input.

const char *	value () const
	Returns the Fl_Input text field's current contents.

void	value (const char *val)
	Sets the Fl_Input text field's contents to `val`.

void	value (int val)
	Chooses item# `val` in the menu, and sets the Fl_Input text field to that value.

Public Member Functions inherited from Fl_Group
Fl_Widget *&	_ddfdesign_kludge ()
	This is for forms compatibility only.

void	add (Fl_Widget &)
	The widget is removed from its current group (if any) and then added to the end of this group.

void	add (Fl_Widget *o)
	See void Fl_Group::add(Fl_Widget &w)

void	add_resizable (Fl_Widget &o)
	Adds a widget to the group and makes it the resizable widget.

Fl_Widget const	array () const
	Returns a pointer to the array of children.

Fl_Group const *	as_group () const FL_OVERRIDE

Fl_Group *	as_group () FL_OVERRIDE
	Returns an Fl_Group pointer if this widget is an Fl_Group.

void	begin ()
	Sets the current group so you can build the widget tree by just constructing the widgets.

Fl_Widget *	child (int n) const
	Returns array()[n].

int	children () const
	Returns how many child widgets the group has.

void	clear ()
	Deletes all child widgets from memory recursively.

unsigned int	clip_children ()
	Returns the current clipping mode.

void	clip_children (int c)
	Controls whether the group widget clips the drawing of child widgets to its bounding box.

virtual int	delete_child (int n)
	Removes the widget at `index` from the group and deletes it.

void	end ()
	Exactly the same as current(this->parent()).

int	find (const Fl_Widget &o) const
	See int Fl_Group::find(const Fl_Widget *w) const.

int	find (const Fl_Widget *) const
	Searches the child array for the widget and returns the index.

	Fl_Group (int, int, int, int, const char *=0)
	Creates a new Fl_Group widget using the given position, size, and label string.

void	focus (Fl_Widget *W)

void	forms_end ()
	This is for forms compatibility only.

int	handle (int) FL_OVERRIDE
	Handles the specified event.

void	init_sizes ()
	Resets the internal array of widget sizes and positions.

void	insert (Fl_Widget &, int i)
	The widget is removed from its current group (if any) and then inserted into this group.

void	insert (Fl_Widget &o, Fl_Widget *before)
	This does insert(w, find(before)).

void	remove (Fl_Widget &)
	Removes a widget from the group but does not delete it.

void	remove (Fl_Widget *o)
	Removes the widget `o` from the group.

void	remove (int index)
	Removes the widget at `index` from the group but does not delete it.

Fl_Widget *	resizable () const
	Returns the group's resizable widget.

void	resizable (Fl_Widget &o)
	Sets the group's resizable widget.

void	resizable (Fl_Widget *o)
	The resizable widget defines both the resizing box and the resizing behavior of the group and its children.

virtual	~Fl_Group ()
	The destructor also deletes all the children.

Public Member Functions inherited from Fl_Widget
void	_clear_fullscreen ()

void	_set_fullscreen ()

void	activate ()
	Activates the widget.

unsigned int	active () const
	Returns whether the widget is active.

int	active_r () const
	Returns whether the widget and all of its parents are active.

Fl_Align	align () const
	Gets the label alignment.

void	align (Fl_Align alignment)
	Sets the label alignment.

long	argument () const
	Gets the current user data (long) argument that is passed to the callback function.

void	argument (long v)
	Sets the current user data (long) argument that is passed to the callback function.

virtual class Fl_Gl_Window *	as_gl_window ()
	Returns an Fl_Gl_Window pointer if this widget is an Fl_Gl_Window.

virtual class Fl_Gl_Window const *	as_gl_window () const

virtual Fl_Window *	as_window ()
	Returns an Fl_Window pointer if this widget is an Fl_Window.

virtual Fl_Window const *	as_window () const

void	bind_deimage (Fl_Image *img)
	Sets the image to use as part of the widget label when in the inactive state.

void	bind_deimage (int f)
	Bind the inactive image to the widget, so the widget will delete the image when it is no longer needed.

void	bind_image (Fl_Image *img)
	Sets the image to use as part of the widget label when in the active state.

void	bind_image (int f)
	Bind the image to the widget, so the widget will delete the image when it is no longer needed.

Fl_Boxtype	box () const
	Gets the box type of the widget.

void	box (Fl_Boxtype new_box)
	Sets the box type for the widget.

Fl_Callback_p	callback () const
	Gets the current callback function for the widget.

void	callback (Fl_Callback *cb)
	Sets the current callback function for the widget.

void	callback (Fl_Callback cb, Fl_Callback_User_Data p, bool auto_free)
	Sets the current callback function and managed user data for the widget.

void	callback (Fl_Callback cb, void p)
	Sets the current callback function and data for the widget.

void	callback (Fl_Callback0 *cb)
	Sets the current callback function for the widget.

void	callback (Fl_Callback1 *cb, long p=0)
	Sets the current callback function for the widget.

unsigned int	changed () const
	Checks if the widget value changed since the last callback.

void	clear_active ()
	Marks the widget as inactive without sending events or changing focus.

void	clear_changed ()
	Marks the value of the widget as unchanged.

void	clear_damage (uchar c=0)
	Clears or sets the damage flags.

void	clear_output ()
	Sets a widget to accept input.

void	clear_visible ()
	Hides the widget.

void	clear_visible_focus ()
	Disables keyboard focus navigation with this widget.

Fl_Color	color () const
	Gets the background color of the widget.

void	color (Fl_Color bg)
	Sets the background color of the widget.

void	color (Fl_Color bg, Fl_Color sel)
	Sets the background and selection color of the widget.

Fl_Color	color2 () const
	For back compatibility only.

void	color2 (unsigned a)
	For back compatibility only.

int	contains (const Fl_Widget *w) const
	Checks if w is a child of this widget.

void	copy_label (const char *new_label)
	Sets the current label.

void	copy_tooltip (const char *text)
	Sets the current tooltip text.

uchar	damage () const
	Returns non-zero if draw() needs to be called.

void	damage (uchar c)
	Sets the damage bits for the widget.

void	damage (uchar c, int x, int y, int w, int h)
	Sets the damage bits for an area inside the widget.

int	damage_resize (int, int, int, int)
	Internal use only.

void	deactivate ()
	Deactivates the widget.

Fl_Image *	deimage ()
	Gets the image that is used as part of the widget label when in the inactive state.

const Fl_Image *	deimage () const
	Gets the image that is used as part of the widget label when in the inactive state.

void	deimage (Fl_Image &img)
	Sets the image to use as part of the widget label when in the inactive state.

void	deimage (Fl_Image *img)
	Sets the image to use as part of the widget label when in the inactive state.

int	deimage_bound () const
	Returns whether the inactive image is managed by the widget.

void	do_callback (Fl_Callback_Reason reason=FL_REASON_UNKNOWN)
	Calls the widget callback function with default arguments.

void	do_callback (Fl_Widget *widget, long arg, Fl_Callback_Reason reason=FL_REASON_UNKNOWN)
	Calls the widget callback function with arbitrary arguments.

void	do_callback (Fl_Widget widget, void arg=0, Fl_Callback_Reason reason=FL_REASON_UNKNOWN)
	Calls the widget callback function with arbitrary arguments.

void	draw_label (int, int, int, int, Fl_Align) const
	Draws the label in an arbitrary bounding box with an arbitrary alignment.

int	h () const
	Gets the widget height.

virtual void	hide ()
	Makes a widget invisible.

Fl_Image *	image ()
	Gets the image that is used as part of the widget label when in the active state.

const Fl_Image *	image () const
	Gets the image that is used as part of the widget label when in the active state.

void	image (Fl_Image &img)
	Sets the image to use as part of the widget label when in the active state.

void	image (Fl_Image *img)
	Sets the image to use as part of the widget label when in the active state.

int	image_bound () const
	Returns whether the image is managed by the widget.

int	inside (const Fl_Widget *wgt) const
	Checks if this widget is a child of `wgt`.

int	is_label_copied () const
	Returns whether the current label was assigned with copy_label().

const char *	label () const
	Gets the current label text.

void	label (const char *text)
	Sets the current label pointer.

void	label (Fl_Labeltype a, const char *b)
	Shortcut to set the label text and type in one call.

Fl_Color	labelcolor () const
	Gets the label color.

void	labelcolor (Fl_Color c)
	Sets the label color.

Fl_Font	labelfont () const
	Gets the font to use.

void	labelfont (Fl_Font f)
	Sets the font to use.

Fl_Fontsize	labelsize () const
	Gets the font size in pixels.

void	labelsize (Fl_Fontsize pix)
	Sets the font size in pixels.

Fl_Labeltype	labeltype () const
	Gets the label type.

void	labeltype (Fl_Labeltype a)
	Sets the label type.

void	measure_label (int &ww, int &hh) const
	Sets width ww and height hh accordingly with the label size.

bool	needs_keyboard () const
	Returns whether this widget needs a keyboard.

void	needs_keyboard (bool needs)
	Sets whether this widget needs a keyboard.

unsigned int	output () const
	Returns if a widget is used for output only.

Fl_Group *	parent () const
	Returns a pointer to the parent widget.

void	parent (Fl_Group *p)
	Internal use only - "for hacks only".

void	position (int X, int Y)
	Repositions the window or widget.

void	redraw ()
	Schedules the drawing of the widget.

void	redraw_label ()
	Schedules the drawing of the label.

Fl_Color	selection_color () const
	Gets the selection color.

void	selection_color (Fl_Color a)
	Sets the selection color.

void	set_active ()
	Marks the widget as active without sending events or changing focus.

void	set_changed ()
	Marks the value of the widget as changed.

void	set_output ()
	Sets a widget to output only.

void	set_visible ()
	Makes the widget visible.

void	set_visible_focus ()
	Enables keyboard focus navigation with this widget.

int	shortcut_label () const
	Returns whether the widget's label uses '&' to indicate shortcuts.

void	shortcut_label (int value)
	Sets whether the widget's label uses '&' to indicate shortcuts.

virtual void	show ()
	Makes a widget visible.

void	size (int W, int H)
	Changes the size of the widget.

int	take_focus ()
	Gives the widget the keyboard focus.

unsigned int	takesevents () const
	Returns if the widget is able to take events.

int	test_shortcut ()
	Returns true if the widget's label contains the entered '&x' shortcut.

const char *	tooltip () const
	Gets the current tooltip text.

void	tooltip (const char *text)
	Sets the current tooltip text.

Fl_Window *	top_window () const
	Returns a pointer to the top-level window for the widget.

Fl_Window *	top_window_offset (int &xoff, int &yoff) const
	Finds the x/y offset of the current widget relative to the top-level window.

uchar	type () const
	Gets the widget type.

void	type (uchar t)
	Sets the widget type.

int	use_accents_menu ()
	Returns non zero if MAC_USE_ACCENTS_MENU flag is set, 0 otherwise.

void *	user_data () const
	Gets the user data for this widget.

void	user_data (Fl_Callback_User_Data *v, bool auto_free)
	Sets the user data for this widget.

void	user_data (void *v)
	Sets the user data for this widget.

unsigned int	visible () const
	Returns whether a widget is visible.

unsigned int	visible_focus () const
	Checks whether this widget has a visible focus.

void	visible_focus (int v)
	Modifies keyboard focus navigation.

int	visible_r () const
	Returns whether a widget and all its parents are visible.

int	w () const
	Gets the widget width.

Fl_When	when () const
	Returns the conditions under which the callback is called.

void	when (uchar i)
	Sets the flags used to decide when a callback is called.

Fl_Window *	window () const
	Returns a pointer to the nearest parent window up the widget hierarchy.

int	x () const
	Gets the widget position in its window.

int	y () const
	Gets the widget position in its window.

virtual	~Fl_Widget ()
	Destroys the widget.

Protected Member Functions
virtual int	inp_h () const
	See inp_x() for info.

virtual int	inp_w () const
	See inp_x() for info.

virtual int	inp_x () const
	The methods inp_x(), inp_y(), inp_w() and inp_h() return the desired position and size of the internal Fl_Input widget.

virtual int	inp_y () const
	See inp_x() for info.

virtual int	menu_h () const
	See menu_x() for info.

virtual int	menu_w () const
	See menu_x() for info.

virtual int	menu_x () const
	The methods menu_x(), menu_y(), menu_w() and menu_h() return the desired position and size of the internal Fl_Menu_Button widget.

virtual int	menu_y () const
	See menu_x() for info.

Protected Member Functions inherited from Fl_Group
Fl_Rect *	bounds ()
	Returns the internal array of widget sizes and positions.

void	draw () FL_OVERRIDE
	Draws the widget.

void	draw_child (Fl_Widget &widget) const
	Forces a child to redraw.

void	draw_children ()
	Draws all children of the group.

void	draw_outside_label (const Fl_Widget &widget) const
	Parents normally call this to draw outside labels of child widgets.

virtual int	on_insert (Fl_Widget *, int)
	Allow derived groups to act when a widget is added as a child.

virtual int	on_move (int, int)
	Allow derived groups to act when a widget is moved within the group.

virtual void	on_remove (int)
	Allow derived groups to act when a child widget is removed from the group.

int *	sizes ()
	Returns the internal array of widget sizes and positions.

void	update_child (Fl_Widget &widget) const
	Draws a child only if it needs it.

Protected Member Functions inherited from Fl_Widget
void	clear_flag (unsigned int c)
	Clears a flag in the flags mask.

void	draw_backdrop () const
	If FL_ALIGN_IMAGE_BACKDROP is set, the image or deimage will be drawn.

void	draw_box () const
	Draws the widget box according its box style.

void	draw_box (Fl_Boxtype t, Fl_Color c) const
	Draws a box of type t, of color c at the widget's position and size.

void	draw_box (Fl_Boxtype t, int x, int y, int w, int h, Fl_Color c) const
	Draws a box of type t, of color c at the position X,Y and size W,H.

void	draw_focus () const
	Draws a focus rectangle around the widget.

void	draw_focus (Fl_Boxtype t, int X, int Y, int W, int H) const
	Draws a focus rectangle around the widget.

void	draw_focus (Fl_Boxtype t, int x, int y, int w, int h, Fl_Color bg) const
	Draws a focus box for the widget at the given position and size.

void	draw_label () const
	Draws the widget's label at the defined label position.

void	draw_label (int, int, int, int) const
	Draws the label in an arbitrary bounding box.

	Fl_Widget (int x, int y, int w, int h, const char *label=0L)
	Creates a widget at the given position and size.

unsigned int	flags () const
	Gets the widget flags mask.

void	h (int v)
	Internal use only.

void	set_flag (unsigned int c)
	Sets a flag in the flags mask.

void	w (int v)
	Internal use only.

void	x (int v)
	Internal use only.

void	y (int v)
	Internal use only.

Additional Inherited Members
Static Public Member Functions inherited from Fl_Group
static Fl_Group *	current ()
	Returns the currently active group.

static void	current (Fl_Group *g)
	Sets the current group.

Static Public Member Functions inherited from Fl_Widget
static void	default_callback (Fl_Widget widget, void data)
	The default callback for all widgets that don't set a callback.

static unsigned int	label_shortcut (const char *t)
	Returns the Unicode value of the '&x' shortcut in a given text.

static int	test_shortcut (const char *, const bool require_alt=false)
	Returns true if the given text `t` contains the entered '&x' shortcut.

Protected Types inherited from Fl_Widget
enum	{ INACTIVE = 1<<0 , INVISIBLE = 1<<1 , OUTPUT = 1<<2 , NOBORDER = 1<<3 , FORCE_POSITION = 1<<4 , NON_MODAL = 1<<5 , SHORTCUT_LABEL = 1<<6 , CHANGED = 1<<7 , OVERRIDE = 1<<8 , VISIBLE_FOCUS = 1<<9 , COPIED_LABEL = 1<<10 , CLIP_CHILDREN = 1<<11 , MENU_WINDOW = 1<<12 , TOOLTIP_WINDOW = 1<<13 , MODAL = 1<<14 , NO_OVERLAY = 1<<15 , GROUP_RELATIVE = 1<<16 , COPIED_TOOLTIP = 1<<17 , FULLSCREEN = 1<<18 , MAC_USE_ACCENTS_MENU = 1<<19 , NEEDS_KEYBOARD = 1<<20 , IMAGE_BOUND = 1<<21 , DEIMAGE_BOUND = 1<<22 , AUTO_DELETE_USER_DATA = 1<<23 , MAXIMIZED = 1<<24 , POPUP = 1<<25 , USERFLAG3 = 1<<29 , USERFLAG2 = 1<<30 , USERFLAG1 = 1<<31 }
	flags possible values enumeration. More...

Detailed Description

A combination of the input widget and a menu button.

The user can either type into the input area, or use the menu button chooser on the right to choose an item which loads the input area with the selected text.

The application can directly access both the internal Fl_Input and Fl_Menu_Button widgets respectively using the input() and menubutton() accessor methods.

The default behavior is to invoke the Fl_Input_Choice::callback() if the user changes the input field's contents, either by typing, pasting, or clicking a different item in the choice menu.

The callback can determine if an item was picked vs. typing into the input field by checking the value of menubutton()->changed(), which will be:

- 1: the user picked a different item in the choice menu
- 0: the user typed or pasted directly into the input field

Example Use of Fl_Input_Choice: #include <stdio.h>

#include <FL/Fl.H>

#include <FL/Fl_Double_Window.H>

#include <FL/Fl_Input_Choice.H>

// Fl_Input_Choice callback()

void choice_cb(Fl_Widget *w, void *userdata) {

// Show info about the picked item

Fl_Input_Choice *choice = (Fl_Input_Choice*)w;

printf("*** Choice Callback:\n");

printf(" widget's text value='%s'\n", choice->value()); // normally all you need

// Access the menu via menubutton()..

const Fl_Menu_Item *item = choice->menubutton()->mvalue();

printf(" item label()='%s'\n", item ? item->label() : "(No item)");

printf(" item value()=%d\n", choice->menubutton()->value());

printf(" input value()='%s'\n", choice->input()->value());

printf(" The user %s\n", choice->menubutton()->changed()

? "picked a menu item"

: "typed text");

}

int main() {

Fl_Double_Window win(200,100,"Input Choice");

win.begin();

Fl_Input_Choice choice(10,10,100,30);

choice.callback(choice_cb, 0);

choice.add("Red");

choice.add("Orange");

choice.add("Yellow");

//choice.value("Red"); // uncomment to make "Red" default

win.end();

win.show();

return Fl::run();

}

Fl.H
Fl static class.

Fl_Double_Window
The Fl_Double_Window provides a double-buffered window.
Definition Fl_Double_Window.H:31

Fl_Input_Choice
A combination of the input widget and a menu button.
Definition Fl_Input_Choice.H:43

Fl_Input_Choice::menubutton
Fl_Menu_Button * menubutton()
Returns a pointer to the internal Fl_Menu_Button widget.
Definition Fl_Input_Choice.H:189

Fl_Input_Choice::add
void add(const char *s)
Adds an item to the menu.
Definition Fl_Input_Choice.H:112

Fl_Input_Choice::value
const char * value() const
Returns the Fl_Input text field's current contents.
Definition Fl_Input_Choice.H:157

Fl_Input_Choice::input
Fl_Input * input()
Returns a pointer to the internal Fl_Input widget.
Definition Fl_Input_Choice.H:194

Fl_Input_::value
int value(const char *)
Changes the widget text.
Definition Fl_Input_.cxx:1461

Fl_Menu_::value
int value() const
Returns the index into menu() of the last item chosen by the user.
Definition Fl_Menu_.H:168

Fl_Menu_::mvalue
const Fl_Menu_Item * mvalue() const
Returns a pointer to the last menu item that was picked.
Definition Fl_Menu_.H:162

Fl_Widget
Fl_Widget is the base class for all widgets in FLTK.
Definition Fl_Widget.H:104

Fl_Widget::w
int w() const
Gets the widget width.
Definition Fl_Widget.H:363

Fl_Widget::callback
Fl_Callback_p callback() const
Gets the current callback function for the widget.
Definition Fl_Widget.H:701

Fl_Widget::changed
unsigned int changed() const
Checks if the widget value changed since the last callback.
Definition Fl_Widget.H:957

Fl::run
static int run()
Calls Fl::wait()repeatedly as long as any windows are displayed.
Definition Fl.cxx:604

Fl_Menu_Item
The Fl_Menu_Item structure defines a single menu item that is used by the Fl_Menu_ class.
Definition Fl_Menu_Item.H:115

Fl_Menu_Item::label
const char * label() const
Returns the title (label) of the menu item.
Definition Fl_Menu_Item.H:168

Subclassing Example: One can subclass Fl_Input_Choice to override the virtual methods inp_x/y/w/h() and menu_x/y/w/h() to take control of the internal Fl_Input and Fl_Menu_Button widget positioning. In this example, input and menubutton's positions are swapped:
#include <FL/Fl.H>

#include <FL/Fl_Window.H>

#include <FL/Fl_Input_Choice.H>

class MyInputChoice : public Fl_Input_Choice {

protected:

virtual int inp_x() const { return x() + Fl::box_dx(box()) + menu_w(); } // override to reposition

virtual int menu_x() const { return x() + Fl::box_dx(box()); } // override to reposition

public:

MyInputChoice(int X,int Y,int W,int H,const char*L=0) : Fl_Input_Choice(X,Y,W,H,L) {

resize(X,Y,W,H); // necessary for ctor to trigger our overrides

}

};

int main(int argc, char **argv) {

Fl_Window *win = new Fl_Window(400,300);

MyInputChoice *mychoice = new MyInputChoice(150,40,150,25,"Right Align Input");

mychoice->add("Aaa");

mychoice->add("Bbb");

mychoice->add("Ccc");

win->end();

win->resizable(win);

win->show();

return Fl::run();

}

Fl_Window.H
Fl_Window widget .

Fl_Group::end
void end()
Exactly the same as current(this->parent()).
Definition Fl_Group.cxx:73

Fl_Group::resizable
void resizable(Fl_Widget &o)
Sets the group's resizable widget.
Definition Fl_Group.H:144

Fl_Window
This widget produces an actual window.
Definition Fl_Window.H:55

Fl_Window::show
void show() FL_OVERRIDE
Puts the window on the screen.
Definition Fl_Window.cxx:545

Fl::box_dx
static int box_dx(Fl_Boxtype)
Returns the X offset for the given boxtype.
Definition fl_boxtype.cxx:375

Constructor & Destructor Documentation

◆ Fl_Input_Choice()

Fl_Input_Choice::Fl_Input_Choice	(	int	X,
		int	Y,
		int	W,
		int	H,
		const char *	L = `0`
	)

Creates a new Fl_Input_Choice widget using the given position, size, and label string.

Inherited destructor destroys the widget and any values associated with it.

Member Function Documentation

◆ add()

void Fl_Input_Choice::add ( const char * s )

inline

Adds an item to the menu.

When any item is selected, the Fl_Input_Choice callback() is invoked, which can do something with the selected item.

You can access the more complex Fl_Menu_Button::add() methods (setting item-specific callbacks, userdata, etc), via menubutton(). Example:

Fl_Input_Choice *choice = new Fl_Input_Choice(100,10,120,25,"Fonts");
Fl_Menu_Button *mb = choice->menubutton();             // use Fl_Input_Choice's Fl_Menu_Button
mb->add("Helvetica", 0, MyFont_CB,     (void*)mydata); // use Fl_Menu_Button's add() methods
mb->add("Courier",   0, MyFont_CB,     (void*)mydata);
mb->add("More..",    0, FontDialog_CB, (void*)mydata);

◆ inp_x()

virtual int Fl_Input_Choice::inp_x ( ) const

inlineprotectedvirtual

The methods inp_x(), inp_y(), inp_w() and inp_h() return the desired position and size of the internal Fl_Input widget.

These can be overridden by a subclass to redefine positioning. See code example in the Description for subclassing details.

◆ input()

Fl_Input * Fl_Input_Choice::input ( )

inline

Returns a pointer to the internal Fl_Input widget.

This can be used to directly access all of the Fl_Input widget's methods.

◆ menu_x()

virtual int Fl_Input_Choice::menu_x ( ) const

inlineprotectedvirtual

The methods menu_x(), menu_y(), menu_w() and menu_h() return the desired position and size of the internal Fl_Menu_Button widget.

These can be overridden by a subclass to redefine positioning. See code example in the Description for subclassing details.

◆ menubutton()

Fl_Menu_Button * Fl_Input_Choice::menubutton ( )

inline

Returns a pointer to the internal Fl_Menu_Button widget.

This can be used to access any of the methods of the menu button, e.g.

Fl_Input_Choice *choice = new Fl_Input_Choice(100,10,120,25,"Choice:");
[..]
// Print all the items in the choice menu
for ( int t=0; t<choice->menubutton()->size(); t++ ) {
   const Fl_Menu_Item &item = choice->menubutton()->menu()[t];
   printf("item %d -- label=%s\n", t, item.label() ? item.label() : "(Null)");
}

◆ resize()

void Fl_Input_Choice::resize	(	int	X,
		int	Y,
		int	W,
		int	H
	)

virtual

Resizes the Fl_Input_Choice widget.

Reimplemented from Fl_Group.

◆ update_menubutton()

int Fl_Input_Choice::update_menubutton ( )

Updates the menubutton with the string value in Fl_Input.

If the string value currently in Fl_Input matches one of the menu items in menubutton(), that menu item will become the current item selected.

Call this method after setting value(const char*) if you need the menubutton() to be synchronized with the Fl_Input field.

// Add items
choice->add(".25");
choice->add(".50");
choice->add("1.0");
choice->add("2.0");
choice->add("4.0");
 
choice->value("1.0");            // sets Fl_Input to "1.0"
choice->update_menubutton();     // cause menubutton to reflect this value too
                                 // (returns 1 if match was found, 0 if not)
// Verify menubutton()'s value.
printf("menu button choice index=%d, value=%s\n",
                            choice->menubutton()->value(),    // would be -1 if update not done
                            choice->menubutton()->text());    // would be NULL if update not done

Returns: 1 if a matching menuitem was found and value set, 0 if not.

Version: 1.4.0

◆ value() [1/2]

void Fl_Input_Choice::value ( const char * val )

inline

Sets the Fl_Input text field's contents to val.

Note it is possible to set the value() to one that is not in the menubutton's list of choices.

Setting the value() does NOT affect the menubutton's selection. If that's needed, call update_menubutton() after setting value().

See also: void value(int val), update_menubutton()

◆ value() [2/2]

void Fl_Input_Choice::value ( int val )

Chooses item# val in the menu, and sets the Fl_Input text field to that value.

Any previous text is cleared.

See also: void value(const char *val)

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

Fl_Input_Choice.H
Fl_Input_Choice.cxx

Public Member Functions

Protected Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ Fl_Input_Choice()

Member Function Documentation

◆ add()

◆ inp_x()

◆ input()

◆ menu_x()

◆ menubutton()

◆ resize()

◆ update_menubutton()

◆ value() [1/2]

◆ value() [2/2]