Common Dialogs classes and functions

Classes
class	Fl_Color_Chooser
	The Fl_Color_Chooser widget provides a standard RGB color chooser. More...
class	Fl_File_Chooser
	The Fl_File_Chooser widget displays a standard file selection dialog that supports various selection modes. More...

Functions
void	fl_alert (const char *fmt,...)
	Shows an alert message dialog box. More...
int	fl_ask (const char *fmt,...)
	Shows a dialog displaying the fmt message, this dialog features 2 yes/no buttons. More...
void	fl_beep (int type)
	Emits a system beep message. More...
int	fl_choice (const char *fmt, const char *b0, const char *b1, const char *b2,...)
	Shows a dialog displaying the fmt message, this dialog features up to 3 customizable choice buttons. More...
int	fl_color_chooser (const char *name, double &r, double &g, double &b, int cmode)
	Pops up a window to let the user pick an arbitrary RGB color. More...
int	fl_color_chooser (const char *name, uchar &r, uchar &g, uchar &b, int cmode)
	Pops up a window to let the user pick an arbitrary RGB color. More...
char *	fl_dir_chooser (const char *message, const char *fname, int relative)
	Shows a file chooser dialog and gets a directory. More...
char *	fl_file_chooser (const char *message, const char *pat, const char *fname, int relative)
	Shows a file chooser dialog and gets a filename. More...
void	fl_file_chooser_callback (void(*cb)(const char *))
	Set the file chooser callback. More...
void	fl_file_chooser_ok_label (const char *l)
	Set the "OK" button label. More...
const char *	fl_input (const char *fmt, const char *defstr,...)
	Shows an input dialog displaying the fmt message. More...
void	fl_message (const char *fmt,...)
	Shows an information message dialog box. More...
void	fl_message_hotspot (int enable)
	Sets whether or not to move the common message box used in many common dialogs like fl_message(), fl_alert(), fl_ask(), fl_choice(), fl_input(), fl_password() to follow the mouse pointer. More...
int	fl_message_hotspot (void)
	Gets whether or not to move the common message box used in many common dialogs like fl_message(), fl_alert(), fl_ask(), fl_choice(), fl_input(), fl_password() to follow the mouse pointer. More...
Fl_Widget *	fl_message_icon ()
	Gets the Fl_Box icon container of the current default dialog used in many common dialogs like fl_message(), fl_alert(), fl_ask(), fl_choice(), fl_input(), fl_password() More...
void	fl_message_title (const char *title)
	Sets the title of the dialog window used in many common dialogs. More...
void	fl_message_title_default (const char *title)
	Sets the default title of the dialog window used in many common dialogs. More...
const char *	fl_password (const char *fmt, const char *defstr,...)
	Shows an input dialog displaying the fmt message. More...

Variables
static void(*	Fl::error )(const char *,...) = ::error
	FLTK calls Fl::error() to output a normal error message. More...
static void(*	Fl::fatal )(const char *,...) = ::fatal
	FLTK calls Fl::fatal() to output a fatal error message. More...
const char *	fl_cancel = "Cancel"
	string pointer used in common dialogs, you can change it to another language
const char *	fl_close = "Close"
	string pointer used in common dialogs, you can change it to another language
const char *	fl_no = "No"
	string pointer used in common dialogs, you can change it to another language
const char *	fl_ok = "OK"
	string pointer used in common dialogs, you can change it to another language
const char *	fl_yes = "Yes"
	string pointer used in common dialogs, you can change it to another language
static void(*	Fl::warning )(const char *,...) = ::warning
	FLTK calls Fl::warning() to output a warning message. More...

Detailed Description

Function Documentation

void fl_alert	(	const char *	fmt,
			...
	)

Shows an alert message dialog box.

Note

Common dialog boxes are application modal. No more than one common dialog box can be open at any time. Requests for additional dialog boxes are ignored.

#include <FL/fl_ask.H>

Parameters

[in]

fmt

can be used as an sprintf-like format and variables for the message text

int fl_ask	(	const char *	fmt,
			...
	)

Shows a dialog displaying the fmt message, this dialog features 2 yes/no buttons.

Note

Common dialog boxes are application modal. No more than one common dialog box can be open at any time. Requests for additional dialog boxes are ignored.

#include <FL/fl_ask.H>

Parameters

[in]

fmt

can be used as an sprintf-like format and variables for the message text

Return values

0	if the no button is selected or another dialog box is still open
1	if yes is selected

void fl_beep

(

int

type

)

Emits a system beep message.

Parameters

[in]

type

The beep type from the Fl_Beep enumeration.

Note

#include <FL/fl_ask.H>

int fl_choice	(	const char *	fmt,
		const char *	b0,
		const char *	b1,
		const char *	b2,
			...
	)

Shows a dialog displaying the fmt message, this dialog features up to 3 customizable choice buttons.

Note

Common dialog boxes are application modal. No more than one common dialog box can be open at any time. Requests for additional dialog boxes are ignored.

#include <FL/fl_ask.H>

Parameters

[in]	fmt	can be used as an sprintf-like format and variables for the message text
[in]	b0	text label of button 0
[in]	b1	text label of button 1
[in]	b2	text label of button 2

Return values

0	if the first button with b0 text is selected or another dialog box is still open
1	if the second button with b1 text is selected
2	if the third button with b2 text is selected

int fl_color_chooser ( const char *  name, double &  r, double &  g, double &  b, int  cmode  )

related

Pops up a window to let the user pick an arbitrary RGB color.

Note

#include <FL/Fl_Color_Chooser.H>

Parameters

[in]	name	Title label for the window
[in,out]	r,g,b	Color components in the range 0.0 to 1.0.
[in]	cmode	Optional mode for color chooser. See mode(int). Default -1 if none (rgb mode).

Return values

1	if user confirms the selection
0	if user cancels the dialog

int fl_color_chooser ( const char *  name, uchar &  r, uchar &  g, uchar &  b, int  cmode  )

related

Pops up a window to let the user pick an arbitrary RGB color.

Note

#include <FL/Fl_Color_Chooser.H>

Parameters

[in]	name	Title label for the window
[in,out]	r,g,b	Color components in the range 0 to 255.
[in]	cmode	Optional mode for color chooser. See mode(int). Default -1 if none (rgb mode).

Return values

1	if user confirms the selection
0	if user cancels the dialog

char * fl_dir_chooser ( const char *  message, const char *  fname, int  relative  )

related

Shows a file chooser dialog and gets a directory.

Note

#include <FL/Fl_File_Chooser.H>

Parameters

[in]	message	title bar text
[in]	fname	initial/default directory name
[in]	relative	0 for absolute path return, relative otherwise

Returns

the directory path string chosen by the user or NULL if user cancels

char * fl_file_chooser ( const char *  message, const char *  pat, const char *  fname, int  relative  )

related

Shows a file chooser dialog and gets a filename.

Note

#include <FL/Fl_File_Chooser.H>

Parameters

[in]	message	text in title bar
[in]	pat	filename pattern filter
[in]	fname	initial/default filename selection
[in]	relative	0 for absolute path name, relative path name otherwise

Returns

the user selected filename, in absolute or relative format or NULL if user cancels

void fl_file_chooser_callback ( void(*)(const char *)  cb )

related

Set the file chooser callback.

Note

#include <FL/Fl_File_Chooser.H>

void fl_file_chooser_ok_label ( const char *  l )

related

Set the "OK" button label.

Note

#include <FL/Fl_File_Chooser.H>

const char* fl_input	(	const char *	fmt,
		const char *	defstr,
			...
	)

Shows an input dialog displaying the fmt message.

Note

Common dialog boxes are application modal. No more than one common dialog box can be open at any time. Requests for additional dialog boxes are ignored.

#include <FL/fl_ask.H>

Parameters

[in]	fmt	can be used as an sprintf-like format and variables for the message text
[in]	defstr	defines the default returned string if no text is entered

Returns

the user string input if OK was pushed, NULL if Cancel was pushed or another dialog box was still open

void fl_message	(	const char *	fmt,
			...
	)

Shows an information message dialog box.

Note

Common dialog boxes are application modal. No more than one common dialog box can be open at any time. Requests for additional dialog boxes are ignored.

#include <FL/fl_ask.H>

Parameters

[in]

fmt

can be used as an sprintf-like format and variables for the message text

void fl_message_hotspot

(

int

enable

)

Sets whether or not to move the common message box used in many common dialogs like fl_message(), fl_alert(), fl_ask(), fl_choice(), fl_input(), fl_password() to follow the mouse pointer.

The default is enabled, so that the default button is the hotspot and appears at the mouse position.

Note

#include <FL/fl_ask.H>

Parameters

[in]

enable

non-zero enables hotspot behavior, 0 disables hotspot

int fl_message_hotspot

(

void

)

Gets whether or not to move the common message box used in many common dialogs like fl_message(), fl_alert(), fl_ask(), fl_choice(), fl_input(), fl_password() to follow the mouse pointer.

Note

#include <FL/fl_ask.H>

Returns

0 if disable, non-zero otherwise

See Also

fl_message_hotspot(int)

Fl_Widget* fl_message_icon

(

)

Gets the Fl_Box icon container of the current default dialog used in many common dialogs like fl_message(), fl_alert(), fl_ask(), fl_choice(), fl_input(), fl_password()

Note

#include <FL/fl_ask.H>

void fl_message_title

(

const char *

title

)

Sets the title of the dialog window used in many common dialogs.

This window title will be used in the next call of one of the common dialogs like fl_message(), fl_alert(), fl_ask(), fl_choice(), fl_input(), fl_password().

The title string is copied internally, so that you can use a local variable or free the string immediately after this call. It applies only to the next call of one of the common dialogs and will be reset to an empty title (the default for all dialogs) after that call.

Note

#include <FL/fl_ask.H>

Parameters

[in]

title

window label, string copied internally

void fl_message_title_default

(

const char *

title

)

Sets the default title of the dialog window used in many common dialogs.

This window title will be used in all subsequent calls of one of the common dialogs like fl_message(), fl_alert(), fl_ask(), fl_choice(), fl_input(), fl_password(), unless a specific title has been set with fl_message_title(const char *title).

The default is no title. You can override the default title for a single dialog with fl_message_title(const char *title).

The title string is copied internally, so that you can use a local variable or free the string immediately after this call.

Note

#include <FL/fl_ask.H>

Parameters

[in]

title

default window label, string copied internally

const char* fl_password	(	const char *	fmt,
		const char *	defstr,
			...
	)

Shows an input dialog displaying the fmt message.

Like fl_input() except the input text is not shown, '*' characters are displayed instead.

Note

Common dialog boxes are application modal. No more than one common dialog box can be open at any time. Requests for additional dialog boxes are ignored.

#include <FL/fl_ask.H>

Parameters

[in]	fmt	can be used as an sprintf-like format and variables for the message text
[in]	defstr	defines the default returned string if no text is entered

Returns

the user string input if OK was pushed, NULL if Cancel was pushed or aother dialog box was still open

Variable Documentation

void(* Fl::error)(const char *format,...) = ::error

static

FLTK calls Fl::error() to output a normal error message.

The default version on Windows displays the error message in a MessageBox window.

The default version on all other platforms prints the error message to stderr.

You can override the behavior by setting the function pointer to your own routine.

Fl::error() means there is a recoverable error such as the inability to read an image file. The default implementation returns after displaying the message.

Note

#include <FL/Fl.H>

void(* Fl::fatal)(const char *format,...) = ::fatal

static

FLTK calls Fl::fatal() to output a fatal error message.

The default version on Windows displays the error message in a MessageBox window.

The default version on all other platforms prints the error message to stderr.

You can override the behavior by setting the function pointer to your own routine.

Fl::fatal() must not return, as FLTK is in an unusable state, however your version may be able to use longjmp or an exception to continue, as long as it does not call FLTK again. The default implementation exits with status 1 after displaying the message.

Note

#include <FL/Fl.H>

void(* Fl::warning)(const char *format,...) = ::warning

static

FLTK calls Fl::warning() to output a warning message.

The default version on Windows returns without printing a warning message, because Windows programs normally don't have stderr (a console window) enabled.

The default version on all other platforms prints the warning message to stderr.

You can override the behavior by setting the function pointer to your own routine.

Fl::warning() means that there was a recoverable problem, the display may be messed up, but the user can probably keep working - all X protocol errors call this, for example. The default implementation returns after displaying the message.

Note

#include <FL/Fl.H>