FLTK 1.4.4: Fl_Scheme_Choice Class Reference

FLTK 1.4.4

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Fl_Scheme_Choice Class Reference
Inheritance diagram for Fl_Scheme_Choice:

## Public Member Functions
| Fl_Scheme_Choice (int X, int Y, int W, int H, const char *L=0)
| The constructor initializes the Fl_Scheme_Choice object with all known schemes.
int | handle (int event) FL_OVERRIDE
| Handle FLTK events.
virtual void | init_value ()
| Public method to initialize the value of the Fl_Scheme_Choice widget.
Public Member Functions inherited from Fl_Choice
| Fl_Choice (int X, int Y, int W, int H, const char *L=0)
| Create a new Fl_Choice widget using the given position, size and label string.
int | value () const
| Gets the index of the last item chosen by the user.
int | value (const Fl_Menu_Item *v)
| Sets the currently selected value using a pointer to menu item.
int | value (int v)
| Sets the currently selected value using the index into the menu item array.
Public Member Functions inherited from Fl_Menu_
int | add (const char *)
| This is a Forms (and SGI GL library) compatible add function, it adds many menu items, with '|' separating the menu items, and tab separating the menu item names from an optional shortcut string.
int | add (const char *, int shortcut, Fl_Callback *, void *=0, int=0)
| Adds a new menu item.
int | add (const char *a, const char *b, Fl_Callback *c, void *d=0, int e=0)
| See int Fl_Menu_::add(const char* label, int shortcut, Fl_Callback*, void *user_data=0, int flags=0)
void | clear ()
| Same as menu(NULL), set the array pointer to null, indicating a zero-length menu.
int | clear_submenu (int index)
| Clears the specified submenu pointed to by `index` of all menu items.
void | copy (const Fl_Menu_Item *m, void *user_data=0)
| Sets the menu array pointer with a copy of m that will be automatically deleted.
Fl_Boxtype | down_box () const
| This box type is used to surround the currently-selected items in the menus.
void | down_box (Fl_Boxtype b)
| Sets the box type used to surround the currently-selected items in the menus.
Fl_Color | down_color () const
| For back compatibility, same as selection_color()
void | down_color (unsigned c)
| For back compatibility, same as selection_color()
int | find_index (const char *name) const
| Find the menu item index for a given menu `pathname`, such as "Edit/Copy".
int | find_index (const Fl_Menu_Item *item) const
| Find the index into the menu array for a given `item`.
int | find_index (Fl_Callback *cb) const
| Find the index into the menu array for a given callback `cb`.
const Fl_Menu_Item * | find_item (const char *name)
| Find the menu item for a given menu `pathname`, such as "Edit/Copy".
const Fl_Menu_Item * | find_item (Fl_Callback *)
| Find the menu item for the given callback `cb`.
const Fl_Menu_Item * | find_item_with_argument (long)
| Find the menu item for the given user argument `v`.
const Fl_Menu_Item * | find_item_with_user_data (void *)
| Find the menu item for the given user data `v`.
| Fl_Menu_ (int, int, int, int, const char *=0)
| Creates a new Fl_Menu_ widget using the given position, size, and label string.
void | global ()
| Make the shortcuts for this menu work no matter what window has the focus when you type it.
int | insert (int index, const char *, int shortcut, Fl_Callback *, void *=0, int=0)
| Inserts a new menu item at the specified `index` position.
int | insert (int index, const char *a, const char *b, Fl_Callback *c, void *d=0, int e=0)
| See int Fl_Menu_::insert(const char* label, int shortcut, Fl_Callback*, void *user_data=0, int flags=0)
int | item_pathname (char *name, int namelen, const Fl_Menu_Item *finditem=0) const
| Get the menu 'pathname' for the specified menuitem.
const Fl_Menu_Item * | menu () const
| Returns a pointer to the array of Fl_Menu_Items.
void | menu (const Fl_Menu_Item *m)
| Sets the menu array pointer directly.
Fl_Boxtype | menu_box () const
| Get the box type for the menu popup windows.
void | menu_box (Fl_Boxtype b)
| Set the box type for the menu popup windows.
const Fl_Menu_Item * | menu_end ()
| Finishes menu modifications and returns menu().
int | mode (int i) const
| Get the flags of item i.
void | mode (int i, int fl)
| Set the flags of item i.
const Fl_Menu_Item * | mvalue () const
| Return a pointer to the last menu item that was picked.
const Fl_Menu_Item * | picked (const Fl_Menu_Item *)
| When user picks a menu item, call this.
const Fl_Menu_Item * | prev_mvalue () const
| Return a pointer to the menu item that was picked before the current one was picked.
void | remove (int)
| Deletes item `i` from the menu.
void | replace (int, const char *)
| Changes the text of item `i`.
void | setonly (Fl_Menu_Item *item)
| Turns the radio item "on" for the menu item and turns "off" adjacent radio items of the same group.
void | shortcut (int i, int s)
| Change the shortcut of item `i` to `s`.
int | size () const
| This returns the number of Fl_Menu_Item structures that make up the menu, correctly counting submenus.
void | size (int W, int H)
const Fl_Menu_Item * | test_shortcut ()
| Returns the menu item with the entered shortcut (key value).
const char * | text () const
| Returns the title of the last item chosen.
const char * | text (int i) const
| Returns the title of item i.
Fl_Color | textcolor () const
| Get the current color of menu item labels.
void | textcolor (Fl_Color c)
| Sets the current color of menu item labels.
Fl_Font | textfont () const
| Gets the current font of menu item labels.
void | textfont (Fl_Font c)
| Sets the current font of menu item labels.
Fl_Fontsize | textsize () const
| Gets the font size of menu item labels.
void | textsize (Fl_Fontsize c)
| Sets the font size of menu item labels.
int | value () const
| Return the index into the menu() of the last item chosen by the user.
int | value (const Fl_Menu_Item *)
| Set the value of a menu to the menu item `m`.
int | value (int i)
| Set the value of the menu to index `i`.
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_Group * | as_group ()
| Returns an Fl_Group pointer if this widget is an Fl_Group.
virtual Fl_Group const * | as_group () 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.
int | horizontal_label_margin ()
| Get the spacing between the label and the horizontal edge of the widget.
void | horizontal_label_margin (int px)
| Set the spacing between the label and the horizontal edge of the widget.
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.
int | label_image_spacing ()
| Return the gap size between the label and the image.
void | label_image_spacing (int gap)
| Set the gap between the label and the image in pixels.
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.
virtual void | resize (int x, int y, int w, int h)
| Changes the size or position of the widget.
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.
int | vertical_label_margin ()
| Get the spacing between the label and the vertical edge of the widget.
void | vertical_label_margin (int px)
| Set the spacing between the label and the vertical edge of the 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.

## Static Protected Member Functions
static void | scheme_cb_ (Fl_Widget *w, void *)
| Internal Fl_Scheme_Choice callback function (protected).

## Additional Inherited Members
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...
Protected Member Functions inherited from Fl_Choice
void | draw () FL_OVERRIDE
| Draws the widget.
Protected Member Functions inherited from Fl_Menu_
int | item_pathname_ (char *name, int namelen, const Fl_Menu_Item *finditem, const Fl_Menu_Item *menu=0) const
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.
Protected Attributes inherited from Fl_Menu_
uchar | alloc
uchar | down_box_
Fl_Boxtype | menu_box_
Fl_Color | textcolor_
Fl_Font | textfont_
Fl_Fontsize | textsize_

## Constructor & Destructor Documentation

## ◆ Fl_Scheme_Choice()

Fl_Scheme_Choice::Fl_Scheme_Choice | ( | int | X,
|  | int | Y,
|  | int | W,
|  | int | H,
|  | const char * | L = 0 )

The constructor initializes the Fl_Scheme_Choice object with all known schemes.

Parameters

  [in] | X,Y | Widget coordinates
  [in] | W,H | Widget size (width, height)
  [in] | L | Widget label (default: NULL, no label)

## Member Function Documentation

## ◆ handle()

int Fl_Scheme_Choice::handle | ( | int | event | ) |
| virtual

Handle FLTK events.

This widget uses FL_SHOW and some other events to initialize its value() according to the current scheme.

All events are also handled by the base class Fl_Choice.

Parameters

  [in] | event |

Returns
  1 if the event was used, 0 otherwise

Reimplemented from Fl_Choice.

## ◆ init_value()

void Fl_Scheme_Choice::init_value | ( |  | ) |
| virtual

Public method to initialize the value of the Fl_Scheme_Choice widget.

Normally you don't need to call this unless you change the current scheme by calling Fl::scheme(const char *).

The Fl_Scheme_Choice widget does this automatically when the widget is shown (when receiving the FL_SHOW event) which should always be after Fl_Window::show(argc, argv) which may set the current scheme by interpreting the commandline.

Since
  1.4.0

## ◆ scheme_cb_()

void Fl_Scheme_Choice::scheme_cb_ | ( | Fl_Widget * | w,
|  | void * | )
| staticprotected

Internal Fl_Scheme_Choice callback function (protected).

You don't need to set a callback for this widget. The default callback changes the scheme (Fl::scheme()) and redraws all open windows.

You may override the callback if changing the scheme shall redraw other windows or don't redraw the window at all.

Parameters

  [in] | w | The Fl_Scheme_Choice widget

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

- Fl_Scheme_Choice.H
- Fl_Scheme_Choice.cxx