dialog

NAME

SYNOPSIS

DESCRIPTION

int main(void)
{
	int status;
	init_dialog(stdin, stdout);
	status = dialog_yesno(
			"Hello, in dialog-format",
			"Hello World!",
			0, 0);
	end_dialog();
	return status;
}

DEFINITIONS

DATA STRUCTURES

DIALOG_STATE

.all_subwindows

.all_windows

.aspect_ratio

.finish_string

.getc_callbacks

.getc_redirect

.had_resize

.no_mouse

.output

.output_count

.pipe_input

.screen_height

.screen_initialized

.screen_output

.screen_width

.separate_str

.tab_len

.text_height

.text_only

.text_width

.trace_output

.use_colors

.use_scrollbar

.use_shadow

.visit_items

DIALOG_VARS

.ascii_lines

.backtitle

.beep_after_signal

.beep_signal

.begin_set

.begin_x

.begin_y

.cancel_label

.cant_kill

.colors

•

0 through 7 are the ANSI codes used in curses: black, red, green, yellow, blue, magenta, cyan and white respectively.

•

Bold is set by 'b', reset by 'B'.

•

Reverse is set by 'r', reset by 'R'.

•

Underline is set by 'u', reset by 'U'.

.column_separator

.cr_wrap

.cursor_off_label

.date_format

.default_button

.default_item

.defaultno

.dlg_clear_screen

.erase_on_exit

.exit_label

.extra_button

.extra_label

.formitem_type

.help_button

.help_file

.help_label

.help_line

.help_status

.help_tags

.input_length

.input_menu

.input_result

•

If DIALOG_VARS.input_length is zero, this is a pointer to user buffer (on the stack, or static). The buffer size is assumed to be MAX_LEN, which is defined in <dialog.h>.

•

When DIALOG_VARS.input_length is nonzero, this is a dynamically-allocated buffer used by the widgets to return printable results to the calling application.

.insecure

.in_helpfile

.iso_week

•

by default, the calendar treats January 1 as the first week of the year.

•

If this variable is true, the calendar uses ISO 8601's convention. ISO 8601 numbers weeks starting with the first week in January with a Thursday in the current year. January 1 may be in the previous year.

.item_help

.keep_tite

.keep_window

.last_key

.max_input

.no_hot_key

.no_items

.no_label

.no_lines

.no_nl_expand

.no_tags

*

Xdialog does not display the tag column for the analogous buildlist and treeview widgets. Dialog does the same on the command-line. However the library interface defaults to displaying the tag column. Your application can enable or disable the tag column as needed for each widget.

.nocancel

.nocollapse

.nook

.ok_label

.pause_secs

.print_siz

.quoted

.reorder

.separate_output

.single_quoted

.size_err

.sleep_secs

.tab_correct

.time_format

.timeout_secs

.title

.trim_whitespace

.week_start

•

a number (0 to 6, Sunday through Saturday using POSIX) or

•

the special value “locale” (this works with systems using glibc, providing an extension to the locale command, the first_weekday value).

•

a string matching one of the abbreviations for the day of the week shown in the calendar widget, e.g., “Mo” for “Monday”.

.yes_label

WIDGETS

dialog_buildlist

const char * title

is the title on the top of the widget.

const char * cprompt

is the prompt text shown within the widget.

int height

is the desired height of the box. If zero, the height is adjusted to use the available screen size.

int width

is the desired width of the box. If zero, the height is adjusted to use the available screen size.

int list_height

is the minimum height to reserve for displaying the list. If zero, it is computed based on the given height and width.

int item_no

is the number of rows in items.

char ** items

is an array of strings which is viewed either as a list of rows

or

depending on whether dialog_vars.item_help is set.

int order_mode

is reserved for future enhancements

dialog_calendar

const char * title

is the title on the top of the widget.

const char * subtitle

is the prompt text shown within the widget.

int height

is the height excluding the fixed-height calendar grid.

int width

is the overall width of the box, which is adjusted up to the calendar grid's minimum width if needed.

int day

is the initial day of the week shown, counting zero as Sunday. If the value is negative, the current day of the week is used.

int month

is the initial month of the year shown, counting one as January. If the value is negative, the current month of the year is used.

int year

is the initial year shown. If the value is negative, the current year is used.

dialog_checklist

const char * title

is the title on the top of the widget.

const char * cprompt

is the prompt text shown within the widget.

int height

is the desired height of the box. If zero, the height is adjusted to use the available screen size.

int width

is the desired width of the box. If zero, the height is adjusted to use the available screen size.

int list_height

is the minimum height to reserve for displaying the list. If zero, it is computed based on the given height and width.

int item_no

is the number of rows in items.

int items

is an array of strings which is viewed either as a list of rows

or

depending on whether dialog_vars.item_help is set.

flag

is either FLAG_CHECK, for checklists, or FLAG_RADIO for radiolists.

dialog_dselect

const char * title

is the title on the top of the widget.

const char * path

is the preselected value to show in the input-box, which is used also to set the directory- and file-windows.

int height

is the height excluding the minimum needed to show the dialog box framework. If zero, the height is based on the screen size.

int width

is the desired width of the box. If zero, the height is based on the screen size.

dialog_editbox

const char * title

is the title on the top of the widget.

const char * file

is the name of the file from which to read.

int height

is the desired height of the box. If zero, the height is adjusted to use the available screen size.

int width

is the desired width of the box. If zero, the height is adjusted to use the available screen size.

dialog_form

const char * title

is the title on the top of the widget.

const char * cprompt

is the prompt text shown within the widget.

int height

is the desired height of the box. If zero, the height is adjusted to use the available screen size.

int width

is the desired width of the box. If zero, the height is adjusted to use the available screen size.

int form_height

is the minimum height to reserve for displaying the list. If zero, it is computed based on the given height and width.

int item_no

is the number of rows in items.

int items

is an array of strings which is viewed either as a list of rows

or

depending on whether dialog_vars.item_help is set.

dialog_fselect

const char * title

is the title on the top of the widget.

const char * path

is the preselected value to show in the input-box, which is used also to set the directory- and file-windows.

int height

is the height excluding the minimum needed to show the dialog box framework. If zero, the height is based on the screen size.

int width

is the desired width of the box. If zero, the height is based on the screen size.

dialog_gauge

const char * title

is the title on the top of the widget.

const char * cprompt

is the prompt text shown within the widget.

int height

is the desired height of the box. If zero, the height is based on the screen size.

int width

is the desired width of the box. If zero, the height is based on the screen size.

int percent

is the percentage to show in the progress bar.

dialog_inputbox

const char * title

is the title on the top of the widget.

const char * cprompt

is the prompt text shown within the widget.

int height

is the desired height of the box. If zero, the height is based on the screen size.

int width

is the desired width of the box. If zero, the height is based on the screen size.

const char * init

is the initial value of the input box, whose length is taken into account when auto-sizing the width of the dialog box.

int password

if true, causes typed input to be echoed as asterisks.

dialog_helpfile

const char * title

is the title on the top of the widget.

const char * file

is the name of a file containing the text to display. This function is internally bound to F1 (function key “1”), passing dialog_vars.help_file as a parameter. The dialog program sets that variable when the --hfile option is given.

int height

is the desired height of the box. If zero, the height is based on the screen size.

int width

is the desired width of the box. If zero, the height is based on the screen size.

dialog_menu

const char * title

is the title on the top of the widget.

const char * cprompt

is the prompt text shown within the widget.

int height

is the desired height of the box. If zero, the height is based on the screen size.

int width

is the desired width of the box. If zero, the height is based on the screen size.

int menu_height

is the minimum height to reserve for displaying the list. If zero, it is computed based on the given height and width.

int item_no

is the number of rows in items.

int items

is an array of strings which is viewed either as a list of rows

or

depending on whether dialog_vars.item_help is set.

dialog_mixedform

const char * title

is the title on the top of the widget.

const char * cprompt

is the prompt text shown within the widget.

int height

is the desired height of the box. If zero, the height is adjusted to use the available screen size.

int width

is the desired width of the box. If zero, the height is adjusted to use the available screen size.

int form_height

is the minimum height to reserve for displaying the list. If zero, it is computed based on the given height and width.

int item_no

is the number of rows in items.

int items

is an array of strings which is viewed either as a list of rows

or

depending on whether dialog_vars.item_help is set.

dialog_mixedgauge

const char * title

is the title on the top of the widget.

const char * cprompt

is the caption text shown within the widget.

int height

is the desired height of the box. If zero, the height is based on the screen size.

int width

is the desired width of the box. If zero, the height is based on the screen size.

int percent

is the percentage to show in the progress bar.

int item_no

is the number of rows in items.

int items

is an array of strings which is viewed as a list of tag and item values. The tag values are listed, one per row, in the list at the top of the widget.

The item values are decoded: digits 0 through 9 are the following strings

A string with a leading "-" character is centered, marked with "%". For example, "-75" is displayed as "75%". Other strings are displayed as is.

dialog_msgbox

const char * title

is the title on the top of the widget.

const char * cprompt

is the prompt text shown within the widget.

int height

is the desired height of the box. If zero, the height is based on the screen size.

int width

is the desired width of the box. If zero, the height is based on the screen size.

int pauseopt

if true, an “OK” button will be shown, and the dialog will wait for it to complete. With an “OK” button, it is denoted a “msgbox”, without an “OK” button, it is denoted an “infobox”.

dialog_pause

const char * title

is the title on the top of the widget.

int height

is the desired height of the box. If zero, the height is based on the screen size.

int width

is the desired width of the box. If zero, the height is based on the screen size.

int seconds

is the timeout to use for the progress bar.

dialog_prgbox

const char * title

is the title on the top of the widget.

const char * cprompt

is the prompt text shown within the widget. If empty or null, no prompt is shown.

const char * command

is the name of the command to execute.

int height

is the desired height of the box. If zero, the height is based on the screen size.

int width

is the desired width of the box. If zero, the height is based on the screen size.

int pauseopt

if true, an “OK” button will be shown, and the dialog will wait for it to complete.

dialog_progressbox

const char * title

is the title on the top of the widget.

const char * cprompt

is the prompt text shown within the widget. If empty or null, no prompt is shown.

int height

is the desired height of the box. If zero, the height is based on the screen size.

int width

is the desired width of the box. If zero, the height is based on the screen size.

dialog_rangebox

const char * title

is the title on the top of the widget.

const char * cprompt

is the prompt text shown within the widget. If empty or null, no prompt is shown.

int height

is the desired height of the widget. If zero, the height is based on the screen size.

int width

is the desired width of the widget. If zero, the height is based on the screen size.

int min_value

is the minimum value to allow.

int max_value

is the maximum value to allow.

int default_value

is the default value, if no change is made.

dialog_tailbox

const char * title

is the title on the top of the widget.

const char * file

is the name of the file to display in the dialog.

int height

is the desired height of the box. If zero, the height is based on the screen size.

int width

is the desired width of the box. If zero, the height is based on the screen size.

int bg_task

if true, the window is added to the callback list in dialog_state, and the application will poll for the window to be updated. Otherwise an “OK” button is added to the window, and it will be closed when the button is activated.

dialog_textbox

const char * title

is the title on the top of the widget.

const char * file

is the name of the file to display in the dialog.

int height

is the desired height of the box. If zero, the height is based on the screen size.

int width

is the desired width of the box. If zero, the height is based on the screen size.

dialog_timebox

const char * title

is the title on the top of the widget.

const char * subtitle

is the prompt text shown within the widget.

int height

is the desired height of the box.

int width

is the desired width of the box.

int hour

is the initial hour shown. If the value is negative, the current hour is used. Returns DLG_EXIT_ERROR if the value specified is greater than or equal to 24.

int minute

is the initial minute shown. If the value is negative, the current minute is used. Returns DLG_EXIT_ERROR if the value specified is greater than or equal to 60.

int second

is the initial second shown. If the value is negative, the current second is used. Returns DLG_EXIT_ERROR if the value specified is greater than or equal to 60.

dialog_treeview

const char * title

is the title on the top of the widget.

const char * cprompt

is the prompt text shown within the widget.

int height

is the desired height of the box. If zero, the height is based on the screen size.

int width

is the desired width of the box. If zero, the height is based on the screen size.

int list_height

is the minimum height to reserve for displaying the list. If zero, it is computed based on the given height and width.

int item_no

is the number of rows in items.

char ** items

is the list of items, contain tag, name, and optionally help strings (if dialog_vars.item_help is set). The initial selection state for each item is also in this list.

int flag

flag

is either FLAG_CHECK, for checklists (multiple selections), or FLAG_RADIO for radiolists (a single selection).

dialog_yesno

const char * title

is the title on the top of the widget.

const char * cprompt

is the prompt text shown within the widget.

int height

is the desired height of the box. If zero, the height is based on the screen size.

int width

is the desired width of the box. If zero, the height is based on the screen size.

UTILITY FUNCTIONS

dlg_add_callback

DIALOG_CALLBACK *p

contains the callback information.

dlg_add_callback_ref

DIALOG_CALLBACK **p

points to the callback information. This is a reference to the pointer so that the caller's pointer can be zeroed when input ends.

DIALOG_FREEBACK func

function to call when input ends, e.g., to free caller's additional data.

dlg_add_help_formitem

int *result

this is updated to DLG_EXIT_ITEM_HELP if DIALOG_VARS.item_help is set.

char **tag

the tag- or help-text is stored here.

DIALOG_FORMITEM *item

contains the list item to use for tag- or help-text.

dlg_add_help_listitem

int *result

this is updated to DLG_EXIT_ITEM_HELP if DIALOG_VARS.item_help is set.

char **tag

the tag- or help-text is stored here.

DIALOG_LISTITEM *item

contains the list item to use for tag- or help-text.

dlg_add_last_key

int mode

controls the way the last key report is separated from other results:

dlg_add_quoted

char * string

is the string to add.

dlg_add_result

char * string

is the string to add.

dlg_add_separator

dlg_add_string

char * string

is the string to add.

dlg_align_columns

Caveat: This function is only implemented for 8-bit characters.

char **target

This is the array to reformat. It points to the first string to modify.

int per_row

This is the size of the struct for each row of the array.

int num_rows

This is the number of rows in the array.

dlg_allocate_gauge

const char * title

is the title string to display at the top of the widget.

const char * cprompt

is the prompt text shown within the widget.

int height

is the desired height of the box. If zero, the height is adjusted to use the available screen size.

int width

is the desired width of the box. If zero, the height is adjusted to use the available screen size.

int percent

is the percentage to show in the progress bar.

dlg_asciibox

chtype ch

is the parameter, usually one of the ACS_xxx constants.

dlg_attr_clear

WINDOW * win

is the window to update.

int height

is the number of rows to update.

int width

is the number of columns to update.

chtype attr

is the attribute, e.g., A_BOLD.

dlg_auto_size

const char * title

is the title string to display at the top of the widget.

const char * prompt

is the message text which will be displayed in the widget, used here to determine how large the widget should be.

If the value is NULL, dialog allows the widget to use the whole screen, i.e., if the values referenced by height and/or width are zero.

int * height

is the nominal height. Dialog checks the referenced value and may update it:

int * width

is the nominal width. Dialog checks the referenced value and may update it:

int boxlines

is the number of lines to reserve in the vertical direction.

int mincols

is the minimum number of columns to use.

dlg_auto_sizefile

const char * title

is the title string to display at the top of the widget.

const char * file

is the name of the file.

int * height

is the nominal height.

If it is -1, use the screen's height (after subtracting dialog_vars.begin_y if dialog_vars.begin_set is true).

If it is greater than zero, limit the referenced value to the screen-height after verifying that the file exists.

int * width

is the nominal width.

If it is -1, use the screen's width (after subtracting dialog_vars.begin_x if dialog_vars.begin_set is true).

If it is greater than zero, limit the referenced value to the screen-width after verifying that the file exists.

int boxlines

is the number of lines to reserve on the screen for drawing boxes.

int mincols

is the number of columns to reserve on the screen for drawing boxes.

dlg_beeping

dlg_boxchar

•

if neither dialog_vars.ascii_lines nor dialog_vars.no_lines is set.

•

if dialog_vars.ascii_lines is set, returns the corresponding "+" or "-", etc., for the line-drawing characters used in dialog.

•

otherwise, if dialog_vars.no_lines is set, returns a space for the line-drawing characters.

•

if the parameter is not a line-drawing or other special character such as ACS_DARROW, it returns the parameter unchanged.

dlg_box_x_ordinate

int width

is the width of the widget.

dlg_box_y_ordinate

int height

is the height of the widget.

dlg_buildlist

const char * title

is the title string to display at the top of the widget.

const char * cprompt

is the prompt text shown within the widget.

int height

is the desired height of the box. If zero, the height is adjusted to use the available screen size.

int width

is the desired width of the box. If zero, the height is adjusted to use the available screen size.

int list_height

is the minimum height to reserve for displaying the list. If zero, it is computed based on the given height and width.

int item_no

is the number of rows in items.

DIALOG_LISTITEM * items

is the list of items, contain tag, name, and optionally help strings (if dialog_vars.item_help is set). The initial selection state for each item is also in this list.

const char * states

This is a list of characters to display for the given states. Normally a buildlist provides true (1) and false (0) values, which the widget displays as "*" and space, respectively. An application may set this parameter to an arbitrary null-terminated string. The widget determines the number of states from the length of this string, and will cycle through the corresponding display characters as the user presses the space-bar.

int order_mode

is reserved for future enhancements

int * current_item

The widget sets the referenced location to the index of the current display item (cursor) when it returns.

dlg_button_count

const char ** labels

is a list of (pointers to) button labels terminated by a null pointer.

dlg_button_key

dlg_button_layout

const char ** labels

is a list of (pointers to) button labels terminated by a null pointer.

int * limit

the function sets the referenced limit to the width required for the buttons (limited by the screen size) if that is wider than the passed-in limit.

dlg_button_sizes

const char ** labels

is a list of (pointers to) button labels terminated by a null pointer.

int vertical

is true if the buttons are arranged in a column rather than a row.

int * longest

Return the total number of columns in the referenced location.

int * length

Return the longest button's columns in the referenced location.

dlg_button_to_char

const char * label

is the label to test.

dlg_button_x_step

const char ** labels

is a list of (pointers to) button labels terminated by a null pointer.

int limit

is the maximum number of columns to allow for the buttons.

int * gap

store the nominal gap between buttons in the referenced location. This is constrained to be at least one.

int * margin

store the left+right total margins (for the list of buttons) in the referenced location.

int * step

store the step-size in the referenced location.

dlg_calc_list_width

int item_no

is the number of items.

DIALOG_LISTITEM * items

contains a name and text field, e.g., for checklists or radiobox lists. The function returns the sum of the widest columns needed for of each of these fields.

If dialog_vars.no_items is set, the text fields in the list are ignored.

dlg_calc_listh

int * height

on input, is the height without adding the list-height. On return, this contains the total list-height and is the actual widget's height.

int * list_height

on input, is the requested list-height. On return, this contains the number of rows available for displaying the list after taking into account the screen size and the dialog_vars.begin_set and dialog_vars.begin_y variables.

int item_no

is the number of items in the list.

dlg_calc_listw

int item_no

is the number of items.

char ** items

is a list of character pointers.

int group

is the number of items in each group, e.g., the second array index.

dlg_char_to_button

int ch

is the character to find.

const char ** labels

is a list of (pointers to) button labels terminated by a null pointer.

dlg_checklist

const char * title

is the title string to display at the top of the widget.

const char * cprompt

is the prompt text shown within the widget.

int height

is the desired height of the box. If zero, the height is adjusted to use the available screen size.

int width

is the desired width of the box. If zero, the height is adjusted to use the available screen size.

int list_height

is the minimum height to reserve for displaying the list. If zero, it is computed based on the given height and width.

int item_no

is the number of items.

DIALOG_LISTITEM * items

This is a list of the items to display in the checklist.

const char * states

This is a list of characters to display for the given states. Normally a checklist provides true (1) and false (0) values, which the widget displays as "*" and space, respectively. An application may set this parameter to an arbitrary null-terminated string. The widget determines the number of states from the length of this string, and will cycle through the corresponding display characters as the user presses the space-bar.

int flag

This is should be one of FLAG_CHECK or FLAG_RADIO, depending on whether the widget should act as a checklist or radiobox.

int * current_item

The widget sets the referenced location to the index of the current display item (cursor) when it returns.

dlg_check_scrolled

int key

is the function-key to check

int last

is the number of lines which would be used to display the scrolled prompt in an arbitrarily tall window. It is used here to check limits for the offset value.

int page

this is the available height for writing scrolled text, which is smaller than the window if it contains buttons.

bool * show

on return, holds TRUE if dlg_print_scrolled should be used to redisplay the prompt text.

int * offset

on entry, holds the starting line number (counting from zero) last used for dlg_print_scrolled. On return, holds the updated starting line number.

dlg_clear

dlg_clr_result

dlg_color_count

dlg_color_setup

dlg_count_argv

argv

Points to the argument vector.

dlg_count_columns

const char * string

is the string to measure.

dlg_count_real_columns

const char * string

is the string to measure.

dlg_count_wchars

const char * string

is the string to measure.

dlg_create_rc

const char * filename

is the name of the file to write to.

dlg_ctl_size

int height

is the window's height

int width

is the window's width

dlg_default_button

dlg_default_formitem

DIALOG_FORMITEM * items

is the list of items to search. It is terminated by an entry with a null name field.

dlg_default_item

char ** items

is the list of items to search.

int llen

is the number of items in each group, e.g., the second array index.

dlg_defaultno_button

dlg_del_window

WINDOW * win

is the window to remove.

dlg_der_window

WINDOW * win

is the parent window

int height

is the subwindow's height

int width

is the subwindow's width

int y

is the subwindow's top-row

int x

is the subwindow's left-column

dlg_does_output

dlg_draw_arrows

WINDOW * dialog

is the window on which to draw an arrow.

int top_arrow

is true if an up-arrow should be drawn at the top of the window.

int bottom_arrow

is true if an down-arrow should be drawn at the bottom of the window.

int x

is the zero-based column within the window on which to draw arrows.

int top

is the zero-based row within the window on which to draw up-arrows as well as a horizontal line to show the window's top.

int bottom

is the zero-based row within the window on which to draw down-arrows as well as a horizontal line to show the window's bottom.

dlg_draw_arrows2

WINDOW * dialog

is the window on which to draw an arrow.

int top_arrow

is true if an up-arrow should be drawn at the top of the window.

int bottom_arrow

is true if an down-arrow should be drawn at the bottom of the window.

int x

is the zero-based column within the window on which to draw arrows.

int top

is the zero-based row within the window on which to draw up-arrows as well as a horizontal line to show the window's top.

int bottom

is the zero-based row within the window on which to draw down-arrows as well as a horizontal line to show the window's bottom.

chtype attr

is the window's background attribute.

chtype borderattr

is the window's border attribute.

dlg_draw_bottom_box

WINDOW * win

is the window to update.

dlg_draw_bottom_box2

WINDOW * win

is the window to update.

chtype on_left

is used to color the upper/left edges of the box, i.e., the tee-element and horizontal line

chtype on_right

is used to color the right edge of the box, i.e., the tee-element

chtype on_inside

is used to fill-color the inside of the box

dlg_draw_box

WINDOW * win

is the window to update.

int y

is the top row of the box.

int x

is the left column of the box.

int height

is the height of the box.

int width

is the width of the box.

chtype boxchar

is used to color the right/lower edges. It also is fill-color used for the box contents.

chtype borderchar

is used to color the upper/left edges.

dlg_draw_box2

WINDOW * win

is the window to update.

int y

is the top row of the box.

int x

is the left column of the box.

int height

is the height of the box.

int width

is the width of the box.

chtype boxchar

is used to fill-color for the box contents.

chtype borderchar

is used to color the upper/left edges.

chtype borderchar2

is used to color the right/lower edges.

dlg_draw_buttons

WINDOW * win

is the window to update.

int y

is the starting row.

int x

is the starting column.

const char ** labels

is a list of (pointers to) button labels terminated by a null pointer.

int selected

is the index within the list of the selected button.

int vertical

is true if the buttons are arranged in a column rather than a row.

int limit

is the number of columns (or rows if vertical) allowed for the display.

dlg_draw_helpline

WINDOW * dialog

is the window to modify.

bool decorations

if true, allow room for the scrolling arrows.

dlg_draw_scrollbar

WINDOW * win

is the window in which the data is scrolled. Because left, right, top, bottom are passed as parameters, this window can contain additional data.

long first_data

is the zero-based index to the first row of data in the current window.

long this_data

is the zero-based index to the current row of data.

long next_data

is the zero-based index to the next data after the current row.

long total_data

is the total number of rows of data.

int left

is the zero-based left margin/column of the window. The up/down arrows are draw inset by 5 columns from this point.

int right

is the zero-based right margin/column of the window. The scrollbar is drawn flush against this column.

int top

is the zero-based row within the window on which to draw up-arrows as well as a horizontal line to show the window's top.

int bottom

is the zero-based row within the window on which to draw down-arrows as well as a horizontal line to show the window's bottom.

chtype attr

is the window's background attribute.

chtype borderattr

is the window's border attribute.

dlg_draw_shadow

WINDOW * win

is the window to update.

int height

is the height of the window.

int width

is the width of the window.

int y

is the top row of the window.

int x

is the left column of the window.

dlg_draw_title

WINDOW * win

is the window to update.

const char * title

is the title string to display at the top of the widget.

dlg_dummy_menutext

DIALOG_LISTITEM * items

is the list of menu items

int current

is the index of the currently-selected item

char * newtext

is the updated text for the menu item

dlg_dump_keys

FILE * fp

is the stream on which to write the bindings.

dlg_dump_window_keys

FILE * fp

is the stream on which to write the bindings.

WINDOW * win

is the window for which bindings should be dumped. If it is null, then only built-in bindings are dumped.

dlg_eat_argv

int * argcp

in/out parameter giving the length of the argument vector. char *** argvp in/out parameter pointing to the argument vector. int start starting index. int count number of arguments to remove.

dlg_edit_offset

char * string

is the string to analyze

int offset

is the character-offset

int x_last

is a limit on the column positions that can be used, e.g., the window's size.

dlg_edit_string

char * string

is the (multibyte) string to update

int * offset

is the character-offset

int key

is the editing key

int fkey

is true if the editing key is a function-key

bool force

is used in a special loop case by calling code to force the return value of this function when a function-key code 0 is passed in.

dlg_exit

int code

is the internal exit code, e.g., DLG_EXIT_OK, which may be remapped.

dlg_exitcode2s

int code

is an exit-code for dialog as defined in <dialog.h>.

dlg_exitname2n

const char * name

is the name of an exit-code for dialog as defined in <dialog.h> but omitting the “DLG_EXIT_” prefix.

dlg_exit_buttoncode

int button

is the button index

dlg_exit_label

dlg_exiterr

const char * fmt

is the format of the printf-like message to write.

...

 

are the variables to apply to the fmt format.

dlg_find_index

const int *list

contains a list of character-offsets, i.e., indices into a string that denote the beginning of multibyte characters.

int limit

is the last index into list to search.

int to_find

is the character-offset to find.

dlg_finish_string

const char * string

is the address of the string whose data should be discarded. The address rather than contents is used as the unique identifier because some of the caching is used for editable input-fields.

dlg_flush_getc

dlg_editbox

const char * title

is the title string to display at the top of the widget.

char *** list

is a pointer to an array of char * pointers. The array is allocated by the caller, and so are the strings to which it points. The dlg_editbox function may reallocate the array and the strings.

int * rows

points to the nominal length of list. The referenced value is updated if list is reallocated.

int height

is the desired height of the box. If zero, the height is adjusted to use the available screen size.

int width

is the desired width of the box. If zero, the height is adjusted to use the available screen size.

dlg_form

const char * title

is the title string to display at the top of the widget.

const char * cprompt

is the prompt text shown within the widget.

int height

is the desired height of the box. If zero, the height is adjusted to use the available screen size.

int width

is the desired width of the box. If zero, the height is adjusted to use the available screen size.

int form_height

is the minimum height to reserve for displaying the list. If zero, it is computed based on the given height and width.

int item_no

is the number of items.

DIALOG_FORMITEM * items

This is a list of the items to display in the form.

int * current_item

The widget sets the referenced location to the index of the current display item (cursor) when it returns.

dlg_free_columns

char **target

This is the array which was reformatted. It points to the first string to free.

int per_row

This is the size of the struct for each row of the array.

int num_rows

This is the number of rows in the array.

dlg_free_formitems

DIALOG_FORMITEM * items

is the list to free.

dlg_free_gauge

void *objptr

points to the gauge widget.

dlg_getc

WINDOW * win

is the window within which to read.

int * fkey

as a side-effect, set this to true if the key-code is really a function-key.

dlg_getenv_num

•

If the caller provides a pointer in the second parameter, return success/failure for the function return, and the actual value via the pointer. Use this for decoding arbitrary numbers, e.g., negative or zero.

•

If the caller does not provide a pointer, return the decoded value for the function-return. Use this when only values greater than zero are useful.

char * name

is the name of the environment-variable to retrieve.

int * value

is the optional pointer to a return-value.

dlg_getenv_str

char * name

is the name of the environment-variable to retrieve.

dlg_get_attrs

WINDOW * win

is the window from which to get attributes.

dlg_getc_callbacks

int ch

is the key-code

int fkey

is true if the key is a function-key

int * result

is used to pass an exit-code to the caller, which should pass that via dlg_exit.

dlg_index_columns

const char * string

is the string to analyze

dlg_index_wchars

const char * string

is the string to analyze

dlg_item_help

const char * txt

is the help-message

dlg_keep_tite

FILE * output

is the output stream used for displaying widgets. It is either stdout or stderr, depending on the --stdout option.

dlg_killall_bg

int * retval

stores the exit-code to pass back to the caller.

dlg_last_getc

dlg_limit_columns

const char * string

is the string to analyze

int limit

is the column limit

int offset

is the starting offset from which analysis should continue

dlg_lookup_key

WINDOW * win

is the window on which the binding is checked

int curses_key

is the curses key-code

int * dialog_key

is the corresponding dialog internal code (see DLG_KEYS_ENUM in dlg_key.h).

dlg_max_input

int max_len

is the value to limit. If it is less than or equal to zero, the return value is the maximum value for dialog_vars.max_input.

dlg_match_char

int ch

is the character to check

const char * string

is the string to search

dlg_menu

const char * title

is the title string to display at the top of the widget.

const char * cprompt

is the prompt text shown within the widget.

int height

is the desired height of the box. If zero, the height is adjusted to use the available screen size.

int width

is the desired width of the box. If zero, the height is adjusted to use the available screen size.

int menu_height

is the minimum height to reserve for displaying the list. If zero, it is computed based on the given height and width.

int item_no

is the number of items.

DIALOG_LISTITEM * items

This is a list of the items to display in the form.

int * current_item

The widget sets the referenced location to the index of the current display item (cursor) when it returns.

DIALOG_INPUTMENU rename_menutext

If this is not dlg_dummy_menutext, the widget acts like an inputmenu widget, providing an extra “Rename” button, which activates an edit feature on the selected menu item.

dlg_move_window

WINDOW *win

is the window to move/resize.

WINDOW *height

is the height of the resized window.

WINDOW *width

is the width of the resized window.

WINDOW *y

y-ordinate to use for the repositioned window.

WINDOW *x

x-ordinate to use for the repositioned window.

dlg_mouse_bigregion

int y

is the row on which the mouse click occurred

int x

is the column on which the mouse click occurred

dlg_mouse_free_regions

dlg_mouse_mkbigregion

int y

is the top-row of the region.

int x

is the left-column of the region.

int height

is the height of the region.

int width

is the width of the region.

int code

is a code used to make the region unique within a widget

int step_x

is used in modes 2 (columns) and 3 (cells) to determine the width of a column/cell.

int step_y

is currently unused

int mode

is used to determine how the mouse position is translated into a code (like a function-key):

dlg_mouse_mkregion

int y

is the top-row of the region.

int x

is the left-column of the region.

int height

is the height of the region.

int width

is the width of the region.

int code

is a code used to make the region unique within a widget

dlg_mouse_region

int y

is the row of the mouse-click

int x

is the column of the mouse-click

dlg_mouse_setbase

int x

is the left-column for the base

int y

is the top-row for the base

dlg_mouse_setcode

int code

is the value to add to dlg_mouse_mkregion's code parameter.

dlg_mouse_wgetch

WINDOW * win

is the window on which to perform the input

int * fkey

the referenced location is set to true if the key-code is an actual or extended (mouse) function-key.

dlg_mouse_wgetch_nowait

WINDOW * win

is the window on which to perform the input

int * fkey

the referenced location is set to true if the key-code is an actual or extended (mouse) function-key.

dlg_need_separator

dlg_new_modal_window

WINDOW * parent

is the parent window (usually the top-level window of a widget)

int height

is the window's height

int width

is the window's width

int y

is the window's top-row

int x

is the window's left-column

dlg_new_window

int height

is the window's height

int width

is the window's width

int y

is the window's top-row

int x

is the window's left-column

dlg_next_button

const char ** labels

is a list of (pointers to) button labels terminated by a null pointer.

int button

is the current button-index.

dlg_next_ok_buttonindex

int current

is the current index in the list of buttons

int extra

if negative, provides a way to enumerate extra active areas on the widget.

dlg_ok_buttoncode

int button

is the button-index (which is not necessarily the same as the index in the list of labels).

dlg_ok_button_key

dlg_ok_label

dlg_ok_labels

dlg_ordinate

dlg_parse_bindkey

char * params

is the parameter string to parse.

dlg_parse_rc

dlg_popen

const char *command

The shell command to run.

const char *type

Like popen, "r" is used to read, and "w" is used to write.

dlg_prev_button

const char ** labels

is a list of (pointers to) button labels terminated by a null pointer.

int button

is the current button index

dlg_print_listitem

WINDOW *win

the window in which to display the text

const char *text

the value to display

int climit

the number of columns available for printing the text

bool first

true if this is the first call (for “tag” and “description”), and the first character of the value should be highlighted.

int selected

nonzero if the text should be displayed using the “selected” colors

dlg_print_scrolled

WINDOW * win

is the window to update.

const char * prompt

is the string to print

int offset

is the starting line-number to write wrapped text.

int height

is the available height for writing the wrapped text

int width

is the width that the wrapping should occur in

int pauseopt

is true if the extra functionality for scrolling should be enabled. If false, this calls dlg_print_autowrap without doing any scrolling.

dlg_print_line

WINDOW *win

is the window to update.

chtype *attr

holds the starting attributes, and is updated to reflect the final attributes applied to the string.

const char *prompt

is the string to print

int lm

is the left margin.

int rm

is the right margin

int *x

returns the ending x-ordinate.

dlg_prev_ok_buttonindex

int current

is the current index

int extra

if negative provides a way to enumerate extra active areas on the widget.

dlg_print_autowrap

WINDOW * win

is the window to update.

const char * prompt

is the string to print

int height

is the nominal height the wrapped string is limited to

int width

is the width that the wrapping should occur in

dlg_print_size

int height

is the window's height

int width

is the window's width

dlg_print_text

WINDOW * win

is the window to update.

const char * txt

is the string to print

int col

is the column limit

chtype * attr

holds the starting attributes, and is updated to reflect the final attributes applied to the string.

dlg_progressbox

const char * title

is the title on the top of the widget.

const char * cprompt

is the prompt text shown within the widget. If empty or null, no prompt is shown.

int height

is the desired height of the box. If zero, the height is based on the screen size.

int width

is the desired width of the box. If zero, the height is based on the screen size.

int pauseopt

if true, an “OK” button will be shown, and the dialog will wait for it to complete. With an “OK” button, it is denoted a “programbox”, without an “OK” button, it is denoted a “progressbox”.

FILE * fp

is the file pointer, which may be a pipe or a regular file.

dlg_put_backtitle

dlg_reallocate_gauge

void ** objptr

If the pointer referenced by this parameter is null, the function creates a new gauge widget using dlg_allocate_gauge. Otherwise, it updates the title and cprompt values, reusing the window from the previous call on this function. As a side-effect, the function stores the updated object-pointer via the objptr parameter.

const char * title

is the title string to display at the top of the widget.

const char * cprompt

is the prompt text shown within the widget.

int height

is the desired height of the box. If zero, the height is adjusted to use the available screen size.

int width

is the desired width of the box. If zero, the height is adjusted to use the available screen size.

int percent

is the percentage to show in the progress bar.

dlg_register_buttons

WINDOW * win

is the window with which to associate the buttons

const char * name

is the widget's binding name (usually the name of the widget).

const char ** buttons

is the list of buttons

dlg_register_window

WINDOW * win

is the window with which to associate the buttons

const char * name

is the widget's binding name (usually the name of the widget).

DLG_KEYS_BINDING * binding

is the binding table

dlg_remove_callback

DIALOG_CALLBACK * p

contains the callback information.

dlg_renamed_menutext

DIALOG_LISTITEM * items

is the list of menu items

int current

is the index of the currently-selected item

char * newtext

is the updated text for the menu item

dlg_reset_timeout

dlg_restore_vars

DIALOG_VARS * save

is the variable from which to restore.

dlg_result_key

int dialog_key

is the dialog key to test

int fkey

is true if this is a function key

int * resultp

store the result of the mapping in the referenced location.

dlg_save_vars

DIALOG_VARS * save

is the variable into which to save.

dlg_set_focus

WINDOW * parent

is the parent window (usually the top-level window of a widget)

WINDOW * win

is the window on which to place focus (usually a subwindow of a widget)

dlg_set_result

const char * string

is the new contents for the result

dlg_set_timeout

WINDOW * win

is the window whose input-timeout should be set

bool will_getc

is true if the widget is expected to read keyboard characters. Some (such as the gauge widget) do not.

dlg_show_string

WINDOW * win

is the window within which to display

const char * string

is the string to display

int offset

is the starting (character, not bytes) offset

chtype attr

is the window attribute to use for the string

int y_base

beginning row on screen

int x_base

beginning column on screen

int x_last

number of columns on screen

bool hidden

if true, do not echo input

bool force

if true, force repaint

dlg_strclone

const char * cprompt

is the string to duplicate

dlg_strcmp

const char * a

is one string

const char * b

is the other string

dlg_string_to_argv

•

Blanks between arguments are replaced by nulls.

•

Normally arguments are separated by blanks; however you can double-quote an argument to enclose blanks. The surrounding double-quotes are removed from the string.

•

A backslash preceding a double-quote within double-quotes is removed.

•

A backslash preceding a newline outside double-quotes is removed.

•

Except for special cases, backslashes are preserved in the strings, since other dialog functions interpret backslashes, e.g., for colors.

char *blob

is the string to convert.

dlg_sub_window

WINDOW * win

is the parent window

int height

is the subwindow's height

int width

is the subwindow's width

int y

is the subwindow's top-row

int x

is the subwindow's left-column

dlg_tab_correct_str

char * prompt

is the string to convert

dlg_trace

dlg_trace_2n

char * name

is the name to log in the comment.

int value

is the value to log in the comment.

dlg_trace_2s

char * name

is the name to log in the comment.

int value

is the value to log in the comment.

dlg_trace_chr

int ch

is the nominal keycode value.

int fkey

is nonzero if the value is really a function key. Some of these may be values declared in the DLG_KEYS_ENUM.

dlg_trace_msg

const char * fmt

is the format of the printf-like message to write.

...

 

are the variables to apply to the fmt format.

DLG_TRACE(("this is dialog version %s\n", dialog_version()));

dlg_trace_va_msg

const char *fmt

is the format of the printf-like message to write.

va_list ap

are the variables to apply to the fmt format.

va_start(ap, fmt);
dlg_trace_msg("## Error: ");
dlg_trace_va_msg(fmt, ap);
va_end(ap);

dlg_ttysize

dlg_trace_win

dlg_treeview

const char * title

is the title on the top of the widget.

const char * cprompt

is the prompt text shown within the widget.

int height

is the desired height of the box. If zero, the height is based on the screen size.

int width

is the desired width of the box. If zero, the height is based on the screen size.

int list_height

is the minimum height to reserve for displaying the list. If zero, it is computed based on the given height and width.

int item_no

is the number of rows in items.

DIALOG_LISTITEM * items

is the list of items, contain tag, name, and optionally help strings (if dialog_vars.item_help is set). The initial selection state for each item is also in this list.

const char * states

This is a list of characters to display for the given states. Normally a buildlist provides true (1) and false (0) values, which the widget displays as "*" and space, respectively. An application may set this parameter to an arbitrary null-terminated string. The widget determines the number of states from the length of this string, and will cycle through the corresponding display characters as the user presses the space-bar.

int * depths

This is a list of depths of each item in the tree. It is a separate parameter from items to allow reuse of the existing functions.

int flag

is either FLAG_CHECK, for checklists (multiple selections), or FLAG_RADIO for radiolists (a single selection).

int * current_item

The widget sets the referenced location to the index of the current display item (cursor) when it returns.

dlg_trim_string

•

Unless dialog_vars.nocollapse is set, each tab is converted to a space before other processing.

•

If dialog_vars.no_nl_expand is not set, and the string has "\n" substrings:

•

Otherwise, if dialog_vars.trim_whitespace is set:

•

Finally (if dialog_vars.no_nl_expand is set, or the string does not contain "\n" substrings, and dialog_vars.trim_whitespace is not set):

char * src

is the string to trim

dlg_unregister_window

WINDOW * win

is the window from which to remove bindings

dlg_update_gauge

void *objptr

points to the gauge object to update.

int percent

is the new percentage value to display.

dlg_will_resize

dlg_yes_buttoncode

int button

is the button index

dlg_yes_labels

end_dialog

init_dialog

FILE *input

is the real tty input of dialog. Usually it is the standard input, but if --input-fd option is used, it may be anything.

FILE *output

is where dialog will send its result. Usually it is the standard error, but if --stdout or --output-fd is used, it may be anything.

SEE ALSO

AUTHOR