This file contains type definitions and general enumerations. More...

#include "Fl_Export.H"
#include "fl_types.h"

Macros
#define	FL_IMAGE_WITH_ALPHA 0x40000000

Version Numbers
FLTK defines some constants to help the programmer to find out, for which FLTK version a program is compiled. The following constants are defined:
#define	FL_MAJOR_VERSION 1
	The major release version of this FLTK library. More...

#define	FL_MINOR_VERSION 3
	The minor release version for this library. More...

#define	FL_PATCH_VERSION 2
	The patch version for this library. More...

#define	FL_VERSION
	The FLTK version number as a double. More...

Mouse and Keyboard Events
This and the following constants define the non-ASCII keys on the keyboard for FL_KEYBOARD and FL_SHORTCUT events. Todo: FL_Button and FL_key... constants could be structured better (use an enum or some doxygen grouping ?) See Also Fl::event_key() and Fl::get_key(int) (use ascii letters for all other keys):
#define	FL_Button 0xfee8
	A mouse button; use Fl_Button + n for mouse button n.

#define	FL_BackSpace 0xff08
	The backspace key.

#define	FL_Tab 0xff09
	The tab key.

#define	FL_Iso_Key 0xff0c
	The additional key of ISO keyboards.

#define	FL_Enter 0xff0d
	The enter key.

#define	FL_Pause 0xff13
	The pause key.

#define	FL_Scroll_Lock 0xff14
	The scroll lock key.

#define	FL_Escape 0xff1b
	The escape key.

#define	FL_Home 0xff50
	The home key.

#define	FL_Left 0xff51
	The left arrow key.

#define	FL_Up 0xff52
	The up arrow key.

#define	FL_Right 0xff53
	The right arrow key.

#define	FL_Down 0xff54
	The down arrow key.

#define	FL_Page_Up 0xff55
	The page-up key.

#define	FL_Page_Down 0xff56
	The page-down key.

#define	FL_End 0xff57
	The end key.

#define	FL_Print 0xff61
	The print (or print-screen) key.

#define	FL_Insert 0xff63
	The insert key.

#define	FL_Menu 0xff67
	The menu key.

#define	FL_Help 0xff68
	The 'help' key on Mac keyboards.

#define	FL_Num_Lock 0xff7f
	The num lock key.

#define	FL_KP 0xff80
	One of the keypad numbers; use FL_KP + n for number n.

#define	FL_KP_Enter 0xff8d
	The enter key on the keypad, same as Fl_KP+'\r'.

#define	FL_KP_Last 0xffbd
	The last keypad key; use to range-check keypad.

#define	FL_F 0xffbd
	One of the function keys; use FL_F + n for function key n.

#define	FL_F_Last 0xffe0
	The last function key; use to range-check function keys.

#define	FL_Shift_L 0xffe1
	The lefthand shift key.

#define	FL_Shift_R 0xffe2
	The righthand shift key.

#define	FL_Control_L 0xffe3
	The lefthand control key.

#define	FL_Control_R 0xffe4
	The righthand control key.

#define	FL_Caps_Lock 0xffe5
	The caps lock key.

#define	FL_Meta_L 0xffe7
	The left meta/Windows key.

#define	FL_Meta_R 0xffe8
	The right meta/Windows key.

#define	FL_Alt_L 0xffe9
	The left alt key.

#define	FL_Alt_R 0xffea
	The right alt key.

#define	FL_Delete 0xffff
	The delete key.

#define	FL_Volume_Down 0xEF11 /* Volume control down */

#define	FL_Volume_Mute 0xEF12 /* Mute sound from the system */

#define	FL_Volume_Up 0xEF13 /* Volume control up */

#define	FL_Media_Play 0xEF14 /* Start playing of audio */

#define	FL_Media_Stop 0xEF15 /* Stop playing audio */

#define	FL_Media_Prev 0xEF16 /* Previous track */

#define	FL_Media_Next 0xEF17 /* Next track */

#define	FL_Home_Page 0xEF18 /* Display user's home page */

#define	FL_Mail 0xEF19 /* Invoke user's mail program */

#define	FL_Search 0xEF1B /* Search */

#define	FL_Back 0xEF26 /* Like back on a browser */

#define	FL_Forward 0xEF27 /* Like forward on a browser */

#define	FL_Stop 0xEF28 /* Stop current operation */

#define	FL_Refresh 0xEF29 /* Refresh the page */

#define	FL_Sleep 0xEF2F /* Put system to sleep */

#define	FL_Favorites 0xEF30 /* Show favorite locations */

Mouse Buttons
These constants define the button numbers for FL_PUSH and FL_RELEASE events. See Also Fl::event_button()
#define	FL_LEFT_MOUSE 1
	The left mouse button.

#define	FL_MIDDLE_MOUSE 2
	The middle mouse button.

#define	FL_RIGHT_MOUSE 3
	The right mouse button.

Event States
The following constants define bits in the Fl::event_state() value.
#define	FL_SHIFT 0x00010000
	One of the shift keys is down.

#define	FL_CAPS_LOCK 0x00020000
	The caps lock is on.

#define	FL_CTRL 0x00040000
	One of the ctrl keys is down.

#define	FL_ALT 0x00080000
	One of the alt keys is down.

#define	FL_NUM_LOCK 0x00100000
	The num lock is on.

#define	FL_META 0x00400000
	One of the meta/Windows keys is down.

#define	FL_SCROLL_LOCK 0x00800000
	The scroll lock is on.

#define	FL_BUTTON1 0x01000000
	Mouse button 1 is pushed.

#define	FL_BUTTON2 0x02000000
	Mouse button 2 is pushed.

#define	FL_BUTTON3 0x04000000
	Mouse button 3 is pushed.

#define	FL_BUTTONS 0x7f000000
	Any mouse button is pushed.

#define	FL_BUTTON(n) (0x00800000<<(n))
	Mouse button n (n > 0) is pushed.

#define	FL_KEY_MASK 0x0000ffff
	All keys are 16 bit for now.

#define	FL_COMMAND FL_CTRL
	An alias for FL_CTRL on WIN32 and X11, or FL_META on MacOS X.

#define	FL_CONTROL FL_META
	An alias for FL_META on WIN32 and X11, or FL_CTRL on MacOS X.

Typedefs
typedef int	Fl_Fontsize
	Size of a font in pixels. More...

Enumerations
enum	{ FL_READ = 1, FL_WRITE = 4, FL_EXCEPT = 8 }
	FD "when" conditions. More...

enum	Fl_Damage { FL_DAMAGE_CHILD = 0x01, FL_DAMAGE_EXPOSE = 0x02, FL_DAMAGE_SCROLL = 0x04, FL_DAMAGE_OVERLAY = 0x08, FL_DAMAGE_USER1 = 0x10, FL_DAMAGE_USER2 = 0x20, FL_DAMAGE_ALL = 0x80 }
	Damage masks. More...

enum	Fl_Event { FL_NO_EVENT = 0, FL_PUSH = 1, FL_RELEASE = 2, FL_ENTER = 3, FL_LEAVE = 4, FL_DRAG = 5, FL_FOCUS = 6, FL_UNFOCUS = 7, FL_KEYDOWN = 8, FL_KEYBOARD = 8, FL_KEYUP = 9, FL_CLOSE = 10, FL_MOVE = 11, FL_SHORTCUT = 12, FL_DEACTIVATE = 13, FL_ACTIVATE = 14, FL_HIDE = 15, FL_SHOW = 16, FL_PASTE = 17, FL_SELECTIONCLEAR = 18, FL_MOUSEWHEEL = 19, FL_DND_ENTER = 20, FL_DND_DRAG = 21, FL_DND_LEAVE = 22, FL_DND_RELEASE = 23, FL_SCREEN_CONFIGURATION_CHANGED = 24, FL_FULLSCREEN = 25 }
	Every time a user moves the mouse pointer, clicks a button, or presses a key, an event is generated and sent to your application. More...

enum	Fl_Labeltype { FL_NORMAL_LABEL = 0, FL_NO_LABEL, _FL_SHADOW_LABEL, _FL_ENGRAVED_LABEL, _FL_EMBOSSED_LABEL, _FL_MULTI_LABEL, _FL_ICON_LABEL, _FL_IMAGE_LABEL, FL_FREE_LABELTYPE }
	The labeltype() method sets the type of the label. More...

enum	Fl_Mode { FL_RGB = 0, FL_INDEX = 1, FL_SINGLE = 0, FL_DOUBLE = 2, FL_ACCUM = 4, FL_ALPHA = 8, FL_DEPTH = 16, FL_STENCIL = 32, FL_RGB8 = 64, FL_MULTISAMPLE = 128, FL_STEREO = 256, FL_FAKE_SINGLE = 512 }
	visual types and Fl_Gl_Window::mode() (values match Glut)

When Conditions
enum	Fl_When { FL_WHEN_NEVER = 0, FL_WHEN_CHANGED = 1, FL_WHEN_NOT_CHANGED = 2, FL_WHEN_RELEASE = 4, FL_WHEN_RELEASE_ALWAYS = 6, FL_WHEN_ENTER_KEY = 8, FL_WHEN_ENTER_KEY_ALWAYS =10, FL_WHEN_ENTER_KEY_CHANGED =11 }
	These constants determine when a callback is performed. More...

Cursors
enum	Fl_Cursor { FL_CURSOR_DEFAULT = 0, FL_CURSOR_ARROW = 35, FL_CURSOR_CROSS = 66, FL_CURSOR_WAIT = 76, FL_CURSOR_INSERT = 77, FL_CURSOR_HAND = 31, FL_CURSOR_HELP = 47, FL_CURSOR_MOVE = 27, FL_CURSOR_NS = 78, FL_CURSOR_WE = 79, FL_CURSOR_NWSE = 80, FL_CURSOR_NESW = 81, FL_CURSOR_NONE =255, FL_CURSOR_N = 70, FL_CURSOR_NE = 69, FL_CURSOR_E = 49, FL_CURSOR_SE = 8, FL_CURSOR_S = 9, FL_CURSOR_SW = 7, FL_CURSOR_W = 36, FL_CURSOR_NW = 68 }
	The following constants define the mouse cursors that are available in FLTK. More...

Variables
FL_EXPORT Fl_Fontsize	FL_NORMAL_SIZE
	normal font size

Box Types
FLTK standard box types This enum defines the standard box types included with FLTK. FL_NO_BOX means nothing is drawn at all, so whatever is already on the screen remains. The FL_..._FRAME types only draw their edges, leaving the interior unchanged. The blue color in Figure 1 is the area that is not drawn by the frame types. Figure 1: FLTK standard box types Todo: Description of boxtypes is incomplete. See below for the defined enum Fl_Boxtype. See Also src/Fl_get_system_colors.cxx
#define	FL_ROUND_UP_BOX fl_define_FL_ROUND_UP_BOX()

#define	FL_ROUND_DOWN_BOX (Fl_Boxtype)(fl_define_FL_ROUND_UP_BOX()+1)

#define	FL_SHADOW_BOX fl_define_FL_SHADOW_BOX()

#define	FL_SHADOW_FRAME (Fl_Boxtype)(fl_define_FL_SHADOW_BOX()+2)

#define	FL_ROUNDED_BOX fl_define_FL_ROUNDED_BOX()

#define	FL_ROUNDED_FRAME (Fl_Boxtype)(fl_define_FL_ROUNDED_BOX()+2)

#define	FL_RFLAT_BOX fl_define_FL_RFLAT_BOX()

#define	FL_RSHADOW_BOX fl_define_FL_RSHADOW_BOX()

#define	FL_DIAMOND_UP_BOX fl_define_FL_DIAMOND_BOX()

#define	FL_DIAMOND_DOWN_BOX (Fl_Boxtype)(fl_define_FL_DIAMOND_BOX()+1)

#define	FL_OVAL_BOX fl_define_FL_OVAL_BOX()

#define	FL_OSHADOW_BOX (Fl_Boxtype)(fl_define_FL_OVAL_BOX()+1)

#define	FL_OVAL_FRAME (Fl_Boxtype)(fl_define_FL_OVAL_BOX()+2)

#define	FL_OFLAT_BOX (Fl_Boxtype)(fl_define_FL_OVAL_BOX()+3)

#define	FL_PLASTIC_UP_BOX fl_define_FL_PLASTIC_UP_BOX()

#define	FL_PLASTIC_DOWN_BOX (Fl_Boxtype)(fl_define_FL_PLASTIC_UP_BOX()+1)

#define	FL_PLASTIC_UP_FRAME (Fl_Boxtype)(fl_define_FL_PLASTIC_UP_BOX()+2)

#define	FL_PLASTIC_DOWN_FRAME (Fl_Boxtype)(fl_define_FL_PLASTIC_UP_BOX()+3)

#define	FL_PLASTIC_THIN_UP_BOX (Fl_Boxtype)(fl_define_FL_PLASTIC_UP_BOX()+4)

#define	FL_PLASTIC_THIN_DOWN_BOX (Fl_Boxtype)(fl_define_FL_PLASTIC_UP_BOX()+5)

#define	FL_PLASTIC_ROUND_UP_BOX (Fl_Boxtype)(fl_define_FL_PLASTIC_UP_BOX()+6)

#define	FL_PLASTIC_ROUND_DOWN_BOX (Fl_Boxtype)(fl_define_FL_PLASTIC_UP_BOX()+7)

#define	FL_GTK_UP_BOX fl_define_FL_GTK_UP_BOX()

#define	FL_GTK_DOWN_BOX (Fl_Boxtype)(fl_define_FL_GTK_UP_BOX()+1)

#define	FL_GTK_UP_FRAME (Fl_Boxtype)(fl_define_FL_GTK_UP_BOX()+2)

#define	FL_GTK_DOWN_FRAME (Fl_Boxtype)(fl_define_FL_GTK_UP_BOX()+3)

#define	FL_GTK_THIN_UP_BOX (Fl_Boxtype)(fl_define_FL_GTK_UP_BOX()+4)

#define	FL_GTK_THIN_DOWN_BOX (Fl_Boxtype)(fl_define_FL_GTK_UP_BOX()+5)

#define	FL_GTK_THIN_UP_FRAME (Fl_Boxtype)(fl_define_FL_GTK_UP_BOX()+6)

#define	FL_GTK_THIN_DOWN_FRAME (Fl_Boxtype)(fl_define_FL_GTK_UP_BOX()+7)

#define	FL_GTK_ROUND_UP_BOX (Fl_Boxtype)(fl_define_FL_GTK_UP_BOX()+8)

#define	FL_GTK_ROUND_DOWN_BOX (Fl_Boxtype)(fl_define_FL_GTK_UP_BOX()+9)

#define	FL_FRAME FL_ENGRAVED_FRAME

#define	FL_FRAME_BOX FL_ENGRAVED_BOX

#define	FL_CIRCLE_BOX FL_ROUND_DOWN_BOX

#define	FL_DIAMOND_BOX FL_DIAMOND_DOWN_BOX

enum	Fl_Boxtype { FL_NO_BOX = 0, FL_FLAT_BOX, FL_UP_BOX, FL_DOWN_BOX, FL_UP_FRAME, FL_DOWN_FRAME, FL_THIN_UP_BOX, FL_THIN_DOWN_BOX, FL_THIN_UP_FRAME, FL_THIN_DOWN_FRAME, FL_ENGRAVED_BOX, FL_EMBOSSED_BOX, FL_ENGRAVED_FRAME, FL_EMBOSSED_FRAME, FL_BORDER_BOX, _FL_SHADOW_BOX, FL_BORDER_FRAME, _FL_SHADOW_FRAME, _FL_ROUNDED_BOX, _FL_RSHADOW_BOX, _FL_ROUNDED_FRAME, _FL_RFLAT_BOX, _FL_ROUND_UP_BOX, _FL_ROUND_DOWN_BOX, _FL_DIAMOND_UP_BOX, _FL_DIAMOND_DOWN_BOX, _FL_OVAL_BOX, _FL_OSHADOW_BOX, _FL_OVAL_FRAME, _FL_OFLAT_BOX, _FL_PLASTIC_UP_BOX, _FL_PLASTIC_DOWN_BOX, _FL_PLASTIC_UP_FRAME, _FL_PLASTIC_DOWN_FRAME, _FL_PLASTIC_THIN_UP_BOX, _FL_PLASTIC_THIN_DOWN_BOX, _FL_PLASTIC_ROUND_UP_BOX, _FL_PLASTIC_ROUND_DOWN_BOX, _FL_GTK_UP_BOX, _FL_GTK_DOWN_BOX, _FL_GTK_UP_FRAME, _FL_GTK_DOWN_FRAME, _FL_GTK_THIN_UP_BOX, _FL_GTK_THIN_DOWN_BOX, _FL_GTK_THIN_UP_FRAME, _FL_GTK_THIN_DOWN_FRAME, _FL_GTK_ROUND_UP_BOX, _FL_GTK_ROUND_DOWN_BOX, FL_FREE_BOXTYPE }

FL_EXPORT Fl_Boxtype	fl_define_FL_ROUND_UP_BOX ()

FL_EXPORT Fl_Boxtype	fl_define_FL_SHADOW_BOX ()

FL_EXPORT Fl_Boxtype	fl_define_FL_ROUNDED_BOX ()

FL_EXPORT Fl_Boxtype	fl_define_FL_RFLAT_BOX ()

FL_EXPORT Fl_Boxtype	fl_define_FL_RSHADOW_BOX ()

FL_EXPORT Fl_Boxtype	fl_define_FL_DIAMOND_BOX ()

FL_EXPORT Fl_Boxtype	fl_define_FL_OVAL_BOX ()

FL_EXPORT Fl_Boxtype	fl_define_FL_PLASTIC_UP_BOX ()

FL_EXPORT Fl_Boxtype	fl_define_FL_GTK_UP_BOX ()

Fl_Boxtype	fl_box (Fl_Boxtype b)
	Get the filled version of a frame. More...

Fl_Boxtype	fl_down (Fl_Boxtype b)
	Get the "pressed" or "down" version of a box. More...

Fl_Boxtype	fl_frame (Fl_Boxtype b)
	Get the unfilled, frame only version of a box. More...

#define	FL_SYMBOL_LABEL FL_NORMAL_LABEL
	Sets the current label type and return its corresponding Fl_Labeltype value.

#define	FL_SHADOW_LABEL fl_define_FL_SHADOW_LABEL()

#define	FL_ENGRAVED_LABEL fl_define_FL_ENGRAVED_LABEL()

#define	FL_EMBOSSED_LABEL fl_define_FL_EMBOSSED_LABEL()

Fl_Labeltype FL_EXPORT	fl_define_FL_SHADOW_LABEL ()

Fl_Labeltype FL_EXPORT	fl_define_FL_ENGRAVED_LABEL ()

Fl_Labeltype FL_EXPORT	fl_define_FL_EMBOSSED_LABEL ()

Alignment Flags
Flags to control the label alignment. This controls how the label is displayed next to or inside the widget. The default value is FL_ALIGN_CENTER for most widgets, which centers the label inside the widget. Flags can be or'd to achieve a combination of alignments. Outside alignments: TOP_LEFT TOP TOP_RIGHT LEFT_TOP+---------------------------------+RIGHT_TOP \| \| LEFT\| \|RIGHT \| \| LEFT_BOTTOM+---------------------------------+RIGHT_BOTTOM BOTTOM_RIGHT BOTTOM BOTTOM_LEFT Inside alignments: +---------------------------------+ \|TOP_LEFT TOP TOP_RIGHT\| \| \| \|LEFT RIGHT\| \| \| \|BOTTOM_RIGHT BOTTOM BOTTOM_LEFT\| +---------------------------------+ See Also FL_ALIGN_CENTER, etc.
typedef unsigned	Fl_Align
	FLTK type for alignment control.

const Fl_Align	FL_ALIGN_CENTER = (Fl_Align)0
	Align the label horizontally in the middle. More...

const Fl_Align	FL_ALIGN_TOP = (Fl_Align)1
	Align the label at the top of the widget. More...

const Fl_Align	FL_ALIGN_BOTTOM = (Fl_Align)2
	Align the label at the bottom of the widget. More...

const Fl_Align	FL_ALIGN_LEFT = (Fl_Align)4
	Align the label at the left of the widget. More...

const Fl_Align	FL_ALIGN_RIGHT = (Fl_Align)8
	Align the label to the right of the widget. More...

const Fl_Align	FL_ALIGN_INSIDE = (Fl_Align)16
	Draw the label inside of the widget. More...

const Fl_Align	FL_ALIGN_TEXT_OVER_IMAGE = (Fl_Align)0x0020
	If the label contains an image, draw the text on top of the image. More...

const Fl_Align	FL_ALIGN_IMAGE_OVER_TEXT = (Fl_Align)0x0000
	If the label contains an image, draw the text below the image. More...

const Fl_Align	FL_ALIGN_CLIP = (Fl_Align)64
	All parts of the label that are lager than the widget will not be drawn . More...

const Fl_Align	FL_ALIGN_WRAP = (Fl_Align)128
	Wrap text that does not fit the width of the widget. More...

const Fl_Align	FL_ALIGN_IMAGE_NEXT_TO_TEXT = (Fl_Align)0x0100
	If the label contains an image, draw the text to the right of the image. More...

const Fl_Align	FL_ALIGN_TEXT_NEXT_TO_IMAGE = (Fl_Align)0x0120
	If the label contains an image, draw the text to the left of the image. More...

const Fl_Align	FL_ALIGN_IMAGE_BACKDROP = (Fl_Align)0x0200
	If the label contains an image, draw the image or deimage in the background. More...

const Fl_Align	FL_ALIGN_TOP_LEFT = FL_ALIGN_TOP \| FL_ALIGN_LEFT

const Fl_Align	FL_ALIGN_TOP_RIGHT = FL_ALIGN_TOP \| FL_ALIGN_RIGHT

const Fl_Align	FL_ALIGN_BOTTOM_LEFT = FL_ALIGN_BOTTOM \| FL_ALIGN_LEFT

const Fl_Align	FL_ALIGN_BOTTOM_RIGHT = FL_ALIGN_BOTTOM \| FL_ALIGN_RIGHT

const Fl_Align	FL_ALIGN_LEFT_TOP = 0x0007

const Fl_Align	FL_ALIGN_RIGHT_TOP = 0x000b

const Fl_Align	FL_ALIGN_LEFT_BOTTOM = 0x000d

const Fl_Align	FL_ALIGN_RIGHT_BOTTOM = 0x000e

const Fl_Align	FL_ALIGN_NOWRAP = (Fl_Align)0

const Fl_Align	FL_ALIGN_POSITION_MASK = 0x000f

const Fl_Align	FL_ALIGN_IMAGE_MASK = 0x0320

Font Numbers
The following constants define the standard FLTK fonts:
typedef int	Fl_Font
	A font number is an index into the internal font table. More...

const Fl_Font	FL_HELVETICA = 0
	Helvetica (or Arial) normal (0)

const Fl_Font	FL_HELVETICA_BOLD = 1
	Helvetica (or Arial) bold.

const Fl_Font	FL_HELVETICA_ITALIC = 2
	Helvetica (or Arial) oblique.

const Fl_Font	FL_HELVETICA_BOLD_ITALIC = 3
	Helvetica (or Arial) bold-oblique.

const Fl_Font	FL_COURIER = 4
	Courier normal.

const Fl_Font	FL_COURIER_BOLD = 5
	Courier bold.

const Fl_Font	FL_COURIER_ITALIC = 6
	Courier italic.

const Fl_Font	FL_COURIER_BOLD_ITALIC = 7
	Courier bold-italic.

const Fl_Font	FL_TIMES = 8
	Times roman.

const Fl_Font	FL_TIMES_BOLD = 9
	Times roman bold.

const Fl_Font	FL_TIMES_ITALIC = 10
	Times roman italic.

const Fl_Font	FL_TIMES_BOLD_ITALIC = 11
	Times roman bold-italic.

const Fl_Font	FL_SYMBOL = 12
	Standard symbol font.

const Fl_Font	FL_SCREEN = 13
	Default monospaced screen font.

const Fl_Font	FL_SCREEN_BOLD = 14
	Default monospaced bold screen font.

const Fl_Font	FL_ZAPF_DINGBATS = 15
	Zapf-dingbats font.

const Fl_Font	FL_FREE_FONT = 16
	first one to allocate

const Fl_Font	FL_BOLD = 1
	add this to helvetica, courier, or times

const Fl_Font	FL_ITALIC = 2
	add this to helvetica, courier, or times

const Fl_Font	FL_BOLD_ITALIC = 3
	add this to helvetica, courier, or times

Colors
The Fl_Color type holds an FLTK color value. Colors are either 8-bit indexes into a virtual colormap or 24-bit RGB color values. Color indices occupy the lower 8 bits of the value, while RGB colors occupy the upper 24 bits, for a byte organization of RGBI. Fl_Color => 0xrrggbbii \| \| \| \| \| \| \| +--- index between 0 and 255 \| \| +----- blue color component (8 bit) \| +------- green component (8 bit) +--------- red component (8 bit) A color can have either an index or an rgb value. Colors with rgb set and an index >0 are reserved for special use.
#define	FL_FREE_COLOR (Fl_Color)16

#define	FL_NUM_FREE_COLOR 16

#define	FL_GRAY_RAMP (Fl_Color)32

#define	FL_NUM_GRAY 24

#define	FL_GRAY FL_BACKGROUND_COLOR

#define	FL_COLOR_CUBE (Fl_Color)56

#define	FL_NUM_RED 5

#define	FL_NUM_GREEN 8

#define	FL_NUM_BLUE 5

typedef unsigned int	Fl_Color
	an FLTK color value

const Fl_Color	FL_FOREGROUND_COLOR = 0
	the default foreground color (0) used for labels and text

const Fl_Color	FL_BACKGROUND2_COLOR = 7
	the default background color for text, list, and valuator widgets

const Fl_Color	FL_INACTIVE_COLOR = 8
	the inactive foreground color

const Fl_Color	FL_SELECTION_COLOR = 15
	the default selection/highlight color

const Fl_Color	FL_GRAY0 = 32

const Fl_Color	FL_DARK3 = 39

const Fl_Color	FL_DARK2 = 45

const Fl_Color	FL_DARK1 = 47

const Fl_Color	FL_BACKGROUND_COLOR = 49

const Fl_Color	FL_LIGHT1 = 50

const Fl_Color	FL_LIGHT2 = 52

const Fl_Color	FL_LIGHT3 = 54

const Fl_Color	FL_BLACK = 56

const Fl_Color	FL_RED = 88

const Fl_Color	FL_GREEN = 63

const Fl_Color	FL_YELLOW = 95

const Fl_Color	FL_BLUE = 216

const Fl_Color	FL_MAGENTA = 248

const Fl_Color	FL_CYAN = 223

const Fl_Color	FL_DARK_RED = 72

const Fl_Color	FL_DARK_GREEN = 60

const Fl_Color	FL_DARK_YELLOW = 76

const Fl_Color	FL_DARK_BLUE = 136

const Fl_Color	FL_DARK_MAGENTA = 152

const Fl_Color	FL_DARK_CYAN = 140

const Fl_Color	FL_WHITE = 255

FL_EXPORT Fl_Color	fl_inactive (Fl_Color c)
	Returns the inactive, dimmed version of the given color.

FL_EXPORT Fl_Color	fl_contrast (Fl_Color fg, Fl_Color bg)
	Returns a color that contrasts with the background color. More...

FL_EXPORT Fl_Color	fl_color_average (Fl_Color c1, Fl_Color c2, float weight)
	Returns the weighted average color between the two given colors. More...

Fl_Color	fl_lighter (Fl_Color c)
	Returns a lighter version of the specified color. More...

Fl_Color	fl_darker (Fl_Color c)
	Returns a darker version of the specified color. More...

Fl_Color	fl_rgb_color (uchar r, uchar g, uchar b)
	Returns the 24-bit color value closest to `r`, `g`, `b`. More...

Fl_Color	fl_rgb_color (uchar g)
	Returns the 24-bit color value closest to `g` (grayscale). More...

Fl_Color	fl_gray_ramp (int i)
	Returns a gray color value from black (i == 0) to white (i == FL_NUM_GRAY - 1). More...

Fl_Color	fl_color_cube (int r, int g, int b)
	Returns a color out of the color cube. More...

Detailed Description

This file contains type definitions and general enumerations.

Macro Definition Documentation

#define FL_MAJOR_VERSION 1

The major release version of this FLTK library.

See Also: FL_VERSION

#define FL_MINOR_VERSION 3

The minor release version for this library.

FLTK remains mostly source-code compatible between minor version changes.

#define FL_PATCH_VERSION 2

The patch version for this library.

FLTK remains binary compatible between patches.

#define FL_VERSION

Value:

((double)FL_MAJOR_VERSION + \
                                 (double)FL_MINOR_VERSION * 0.01 + \
                                 (double)FL_PATCH_VERSION * 0.0001)

The FLTK version number as a double.

FL_VERSION is a double that describes the major and minor version numbers. Version 1.1 is actually stored as 1.01 to allow for more than 9 minor releases.

The FL_MAJOR_VERSION, FL_MINOR_VERSION, and FL_PATCH_VERSION constants give the integral values for the major, minor, and patch releases respectively.

Typedef Documentation

typedef int Fl_Font

A font number is an index into the internal font table.

typedef int Fl_Fontsize

Size of a font in pixels.

This is the approximate height of a font in pixels.

Enumeration Type Documentation

anonymous enum

FD "when" conditions.

Enumerator
FL_READ	Call the callback when there is data to be read.
FL_WRITE	Call the callback when data can be written without blocking.
FL_EXCEPT	Call the callback if an exception occurs on the file.

enum Fl_Boxtype

Enumerator
FL_NO_BOX	nothing is drawn at all, this box is invisible
FL_FLAT_BOX	a flat box
FL_UP_BOX	see figure 1
FL_DOWN_BOX	see figure 1
FL_UP_FRAME	see figure 1
FL_DOWN_FRAME	see figure 1
FL_THIN_UP_BOX	see figure 1
FL_THIN_DOWN_BOX	see figure 1
FL_THIN_UP_FRAME	see figure 1
FL_THIN_DOWN_FRAME	see figure 1
FL_ENGRAVED_BOX	see figure 1
FL_EMBOSSED_BOX	see figure 1
FL_ENGRAVED_FRAME	see figure 1
FL_EMBOSSED_FRAME	see figure 1
FL_BORDER_BOX	see figure 1
_FL_SHADOW_BOX	see figure 1
FL_BORDER_FRAME	see figure 1
_FL_SHADOW_FRAME	see figure 1
_FL_ROUNDED_BOX	see figure 1
_FL_RSHADOW_BOX	see figure 1
_FL_ROUNDED_FRAME	see figure 1
_FL_RFLAT_BOX	see figure 1
_FL_ROUND_UP_BOX	see figure 1
_FL_ROUND_DOWN_BOX	see figure 1
_FL_DIAMOND_UP_BOX	see figure 1
_FL_DIAMOND_DOWN_BOX	see figure 1
_FL_OVAL_BOX	see figure 1
_FL_OSHADOW_BOX	see figure 1
_FL_OVAL_FRAME	see figure 1
_FL_OFLAT_BOX	see figure 1
_FL_PLASTIC_UP_BOX	plastic version of FL_UP_BOX
_FL_PLASTIC_DOWN_BOX	plastic version of FL_DOWN_BOX
_FL_PLASTIC_UP_FRAME	plastic version of FL_UP_FRAME
_FL_PLASTIC_DOWN_FRAME	plastic version of FL_DOWN_FRAME
_FL_PLASTIC_THIN_UP_BOX	plastic version of FL_THIN_UP_BOX
_FL_PLASTIC_THIN_DOWN_BOX	plastic version of FL_THIN_DOWN_BOX
_FL_PLASTIC_ROUND_UP_BOX	plastic version of FL_ROUND_UP_BOX
_FL_PLASTIC_ROUND_DOWN_BOX	plastic version of FL_ROUND_DOWN_BOX
_FL_GTK_UP_BOX	gtk+ version of FL_UP_BOX
_FL_GTK_DOWN_BOX	gtk+ version of FL_DOWN_BOX
_FL_GTK_UP_FRAME	gtk+ version of FL_UP_FRAME
_FL_GTK_DOWN_FRAME	gtk+ version of FL_DOWN_RAME
_FL_GTK_THIN_UP_BOX	gtk+ version of FL_THIN_UP_BOX
_FL_GTK_THIN_DOWN_BOX	gtk+ version of FL_THIN_DOWN_BOX
_FL_GTK_THIN_UP_FRAME	gtk+ version of FL_UP_FRAME
_FL_GTK_THIN_DOWN_FRAME	gtk+ version of FL_THIN_DOWN_FRAME
_FL_GTK_ROUND_UP_BOX	gtk+ version of FL_ROUND_UP_BOX
_FL_GTK_ROUND_DOWN_BOX	gtk+ version of FL_ROUND_DOWN_BOX
FL_FREE_BOXTYPE	the first free box type for creation of new box types

enum Fl_Cursor

The following constants define the mouse cursors that are available in FLTK.

The double-headed arrows are bitmaps provided by FLTK on X, the others are provided by system-defined cursors.

Todo:: enum Fl_Cursor needs maybe an image.

Enumerator
FL_CURSOR_DEFAULT	the default cursor, usually an arrow.
FL_CURSOR_ARROW	an arrow pointer.
FL_CURSOR_CROSS	crosshair.
FL_CURSOR_WAIT	watch or hourglass.
FL_CURSOR_INSERT	I-beam.
FL_CURSOR_HAND	hand (uparrow on MSWindows).
FL_CURSOR_HELP	question mark.
FL_CURSOR_MOVE	4-pointed arrow.
FL_CURSOR_NS	up/down arrow.
FL_CURSOR_WE	left/right arrow.
FL_CURSOR_NWSE	diagonal arrow.
FL_CURSOR_NESW	diagonal arrow.
FL_CURSOR_NONE	invisible.
FL_CURSOR_N	for back compatibility.
FL_CURSOR_NE	for back compatibility.
FL_CURSOR_E	for back compatibility.
FL_CURSOR_SE	for back compatibility.
FL_CURSOR_S	for back compatibility.
FL_CURSOR_SW	for back compatibility.
FL_CURSOR_W	for back compatibility.
FL_CURSOR_NW	for back compatibility.

enum Fl_Damage

Damage masks.

Enumerator
FL_DAMAGE_CHILD	A child needs to be redrawn.
FL_DAMAGE_EXPOSE	The window was exposed.
FL_DAMAGE_SCROLL	The Fl_Scroll widget was scrolled.
FL_DAMAGE_OVERLAY	The overlay planes need to be redrawn.
FL_DAMAGE_USER1	First user-defined damage bit.
FL_DAMAGE_USER2	Second user-defined damage bit.
FL_DAMAGE_ALL	Everything needs to be redrawn.

enum Fl_Event

Every time a user moves the mouse pointer, clicks a button, or presses a key, an event is generated and sent to your application.

Events can also come from other programs like the window manager.

Events are identified by the integer argument passed to the Fl_Widget::handle() virtual method. Other information about the most recent event is stored in static locations and acquired by calling the Fl::event_*() methods. This static information remains valid until the next event is read from the window system, so it is ok to look at it outside of the handle() method.

See Also: Fl::event_text(), Fl::event_key(), class Fl::

Enumerator
FL_NO_EVENT	No event.
FL_PUSH	A mouse button has gone down with the mouse pointing at this widget. You can find out what button by calling Fl::event_button(). You find out the mouse position by calling Fl::event_x() and Fl::event_y(). A widget indicates that it "wants" the mouse click by returning non-zero from its Fl_Widget::handle() method. It will then become the Fl::pushed() widget and will get FL_DRAG and the matching FL_RELEASE events. If Fl_Widget::handle() returns zero then FLTK will try sending the FL_PUSH to another widget.
FL_RELEASE	A mouse button has been released. You can find out what button by calling Fl::event_button(). In order to receive the FL_RELEASE event, the widget must return non-zero when handling FL_PUSH.
FL_ENTER	The mouse has been moved to point at this widget. This can be used for highlighting feedback. If a widget wants to highlight or otherwise track the mouse, it indicates this by returning non-zero from its handle() method. It then becomes the Fl::belowmouse() widget and will receive FL_MOVE and FL_LEAVE events.
FL_LEAVE	The mouse has moved out of the widget. In order to receive the FL_LEAVE event, the widget must return non-zero when handling FL_ENTER.
FL_DRAG	The mouse has moved with a button held down. The current button state is in Fl::event_state(). The mouse position is in Fl::event_x() and Fl::event_y(). In order to receive FL_DRAG events, the widget must return non-zero when handling FL_PUSH.
FL_FOCUS	This indicates an attempt to give a widget the keyboard focus. If a widget wants the focus, it should change itself to display the fact that it has the focus, and return non-zero from its handle() method. It then becomes the Fl::focus() widget and gets FL_KEYDOWN, FL_KEYUP, and FL_UNFOCUS events. The focus will change either because the window manager changed which window gets the focus, or because the user tried to navigate using tab, arrows, or other keys. You can check Fl::event_key() to figure out why it moved. For navigation it will be the key pressed and for interaction with the window manager it will be zero.
FL_UNFOCUS	This event is sent to the previous Fl::focus() widget when another widget gets the focus or the window loses focus.
FL_KEYDOWN	A key was pressed (FL_KEYDOWN) or released (FL_KEYUP). Fl_KEYBOARD is a synonym for FL_KEYDOWN. The key can be found in Fl::event_key(). The text that the key should insert can be found with Fl::event_text() and its length is in Fl::event_length(). If you use the key handle() should return 1. If you return zero then FLTK assumes you ignored the key and will then attempt to send it to a parent widget. If none of them want it, it will change the event into a FL_SHORTCUT event. To receive FL_KEYBOARD events you must also respond to the FL_FOCUS and FL_UNFOCUS events. If you are writing a text-editing widget you may also want to call the Fl::compose() function to translate individual keystrokes into non-ASCII characters. FL_KEYUP events are sent to the widget that currently has focus. This is not necessarily the same widget that received the corresponding FL_KEYDOWN event because focus may have changed between events.
FL_KEYBOARD	Equivalent to FL_KEYDOWN. See Also FL_KEYDOWN
FL_KEYUP	Key release event. See Also FL_KEYDOWN
FL_CLOSE	The user clicked the close button of a window. This event is used internally only to trigger the callback of Fl_Window derived classed. The default callback closes the window calling Fl_Window::hide().
FL_MOVE	The mouse has moved without any mouse buttons held down. This event is sent to the Fl::belowmouse() widget. In order to receive FL_MOVE events, the widget must return non-zero when handling FL_ENTER.
FL_SHORTCUT	If the Fl::focus() widget is zero or ignores an FL_KEYBOARD event then FLTK tries sending this event to every widget it can, until one of them returns non-zero. FL_SHORTCUT is first sent to the Fl::belowmouse() widget, then its parents and siblings, and eventually to every widget in the window, trying to find an object that returns non-zero. FLTK tries really hard to not to ignore any keystrokes! You can also make "global" shortcuts by using Fl::add_handler(). A global shortcut will work no matter what windows are displayed or which one has the focus.
FL_DEACTIVATE	This widget is no longer active, due to Fl_Widget::deactivate() being called on it or one of its parents. Fl_Widget::active() may still be true after this, the widget is only active if Fl_Widget::active() is true on it and all its parents (use Fl_Widget::active_r() to check this).
FL_ACTIVATE	This widget is now active, due to Fl_Widget::activate() being called on it or one of its parents.
FL_HIDE	This widget is no longer visible, due to Fl_Widget::hide() being called on it or one of its parents, or due to a parent window being minimized. Fl_Widget::visible() may still be true after this, but the widget is visible only if visible() is true for it and all its parents (use Fl_Widget::visible_r() to check this).
FL_SHOW	This widget is visible again, due to Fl_Widget::show() being called on it or one of its parents, or due to a parent window being restored. Child Fl_Windows respond to this by actually creating the window if not done already, so if you subclass a window, be sure to pass FL_SHOW to the base class Fl_Widget::handle() method!
FL_PASTE	You should get this event some time after you call Fl::paste(). The contents of Fl::event_text() is the text to insert and the number of characters is in Fl::event_length().
FL_SELECTIONCLEAR	The Fl::selection_owner() will get this event before the selection is moved to another widget. This indicates that some other widget or program has claimed the selection. Motif programs used this to clear the selection indication. Most modern programs ignore this.
FL_MOUSEWHEEL	The user has moved the mouse wheel. The Fl::event_dx() and Fl::event_dy() methods can be used to find the amount to scroll horizontally and vertically.
FL_DND_ENTER	The mouse has been moved to point at this widget. A widget that is interested in receiving drag'n'drop data must return 1 to receive FL_DND_DRAG, FL_DND_LEAVE and FL_DND_RELEASE events.
FL_DND_DRAG	The mouse has been moved inside a widget while dragging data. A widget that is interested in receiving drag'n'drop data should indicate the possible drop position.
FL_DND_LEAVE	The mouse has moved out of the widget.
FL_DND_RELEASE	The user has released the mouse button dropping data into the widget. If the widget returns 1, it will receive the data in the immediately following FL_PASTE event.
FL_SCREEN_CONFIGURATION_CHANGED	The screen configuration (number, positions) was changed. Use Fl::add_handler() to be notified of this event.
FL_FULLSCREEN	The fullscreen state of the window has changed.

enum Fl_Labeltype

The labeltype() method sets the type of the label.

The following standard label types are included:

Todo:

The doxygen comments are incomplete, and some labeltypes are starting with an underscore. Also, there are three external functions undocumented (yet):

fl_define_FL_SHADOW_LABEL()
fl_define_FL_ENGRAVED_LABEL()
fl_define_FL_EMBOSSED_LABEL()

Enumerator
FL_NORMAL_LABEL	draws the text (0)
FL_NO_LABEL	does nothing
_FL_SHADOW_LABEL	draws a drop shadow under the text
_FL_ENGRAVED_LABEL	draws edges as though the text is engraved
_FL_EMBOSSED_LABEL	draws edges as though the text is raised
_FL_MULTI_LABEL	?
_FL_ICON_LABEL	draws the icon associated with the text
_FL_IMAGE_LABEL	?
FL_FREE_LABELTYPE	first free labeltype to use for creating own labeltypes

enum Fl_When

These constants determine when a callback is performed.

See Also: Fl_Widget::when();

Todo:: doxygen comments for values are incomplete and maybe wrong or unclear

Enumerator
FL_WHEN_NEVER	Never call the callback.
FL_WHEN_CHANGED	Do the callback only when the widget value changes.
FL_WHEN_NOT_CHANGED	Do the callback whenever the user interacts with the widget.
FL_WHEN_RELEASE	Do the callback when the button or key is released and the value changes.
FL_WHEN_RELEASE_ALWAYS	Do the callback when the button or key is released, even if the value doesn't change.
FL_WHEN_ENTER_KEY	Do the callback when the user presses the ENTER key and the value changes.
FL_WHEN_ENTER_KEY_ALWAYS	Do the callback when the user presses the ENTER key, even if the value doesn't change.
FL_WHEN_ENTER_KEY_CHANGED	?

Function Documentation

Fl_Boxtype fl_box ( Fl_Boxtype b )

inline

Get the filled version of a frame.

If no filled version of a given frame exists, the behavior of this function is undefined and some random box or frame is returned.

Fl_Color fl_color_cube	(	int	r,
		int	g,
		int	b
	)

inline

Returns a color out of the color cube.

r must be in the range 0 to FL_NUM_RED (5) minus 1, g must be in the range 0 to FL_NUM_GREEN (8) minus 1, b must be in the range 0 to FL_NUM_BLUE (5) minus 1.

To get the closest color to a 8-bit set of R,G,B values use:

fl_color_cube(R * (FL_NUM_RED - 1) / 255,
   G * (FL_NUM_GREEN - 1) / 255,
   B * (FL_NUM_BLUE - 1) / 255);

Fl_Color fl_darker ( Fl_Color c )

inline

Returns a darker version of the specified color.

Fl_Boxtype fl_down ( Fl_Boxtype b )

inline

Get the "pressed" or "down" version of a box.

If no "down" version of a given box exists, the behavior of this function is undefined and some random box or frame is returned.

Fl_Boxtype fl_frame ( Fl_Boxtype b )

inline

Get the unfilled, frame only version of a box.

If no frame version of a given box exists, the behavior of this function is undefined and some random box or frame is returned.

Fl_Color fl_gray_ramp ( int i )

inline

Returns a gray color value from black (i == 0) to white (i == FL_NUM_GRAY - 1).

FL_NUM_GRAY is defined to be 24 in the current FLTK release. To get the closest FLTK gray value to an 8-bit grayscale color 'I' use:

fl_gray_ramp(I * (FL_NUM_GRAY - 1) / 255)

Fl_Color fl_lighter ( Fl_Color c )

inline

Returns a lighter version of the specified color.

Fl_Color fl_rgb_color	(	uchar	r,
		uchar	g,
		uchar	b
	)

inline

Returns the 24-bit color value closest to r, g, b.

Fl_Color fl_rgb_color ( uchar g )

inline

Returns the 24-bit color value closest to g (grayscale).

Variable Documentation

const Fl_Align FL_ALIGN_BOTTOM = (Fl_Align)2

Align the label at the bottom of the widget.

const Fl_Align FL_ALIGN_CENTER = (Fl_Align)0

Align the label horizontally in the middle.

const Fl_Align FL_ALIGN_CLIP = (Fl_Align)64

All parts of the label that are lager than the widget will not be drawn .

const Fl_Align FL_ALIGN_IMAGE_BACKDROP = (Fl_Align)0x0200

If the label contains an image, draw the image or deimage in the background.

const Fl_Align FL_ALIGN_IMAGE_NEXT_TO_TEXT = (Fl_Align)0x0100

If the label contains an image, draw the text to the right of the image.

const Fl_Align FL_ALIGN_IMAGE_OVER_TEXT = (Fl_Align)0x0000

If the label contains an image, draw the text below the image.

const Fl_Align FL_ALIGN_INSIDE = (Fl_Align)16

Draw the label inside of the widget.

const Fl_Align FL_ALIGN_LEFT = (Fl_Align)4

Align the label at the left of the widget.

Inside labels appear left-justified starting at the left side of the widget, outside labels are right-justified and drawn to the left of the widget.

const Fl_Align FL_ALIGN_RIGHT = (Fl_Align)8

Align the label to the right of the widget.

const Fl_Align FL_ALIGN_TEXT_NEXT_TO_IMAGE = (Fl_Align)0x0120

If the label contains an image, draw the text to the left of the image.

const Fl_Align FL_ALIGN_TEXT_OVER_IMAGE = (Fl_Align)0x0020

If the label contains an image, draw the text on top of the image.

const Fl_Align FL_ALIGN_TOP = (Fl_Align)1

Align the label at the top of the widget.

Inside labels appear below the top, outside labels are drawn on top of the widget.

const Fl_Align FL_ALIGN_WRAP = (Fl_Align)128

Wrap text that does not fit the width of the widget.

Macros

Typedefs

Enumerations

Variables

Box Types

Alignment Flags

Font Numbers

Colors

Detailed Description

Macro Definition Documentation

Typedef Documentation

Enumeration Type Documentation

Function Documentation

Variable Documentation