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_N_GUI_CURVE_MOUSE Struct _N_GUI_GRID Struct _N_GUI_POPUP_ENTRY Struct _N_GUI_POPUP_LEVEL Struct _N_GUI_SB_SKIN Struct _N_GUI_TA_STEP Struct _N_GUI_THUMB Struct _N_GUI_WRAP_ACC Struct _compiled Struct _conn Struct _ip_slot Struct _mp_param Struct _n_civil Struct _seg Struct client Struct collector Struct date_vector Struct md_atom Struct md_cells Struct md_hit Struct md_line_ctx Struct mline Struct n_http_req_header Struct n_http_req_limits Struct n_http_request Struct n_markdown_block Struct n_markdown_doc Struct n_markdown_inline Struct n_markdown_span Struct n_reactor_stats Struct n_url_safe Struct n_url_safe_head Struct n_wrap_item Struct producer_state Struct rects Struct reply Struct runner Struct sink Struct tbuf Struct wrap_hit Struct wrap_span Structures Union COORD_VALUE Union HASH_DATA Union NODE_DATA_TYPES Union STACK_DATA dir_310dcdd4703e877a6b99d5dc3fc54d27 dir_68267d1309a1af8e8297ef4c3efbcdba dir_d28a4824dc47e487b107a5db32ef43c4 dir_d44c64559bbebec7f509842c48db8b23 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example ex_network_ws_limits_8c example ex_nstr_8c example ex_parallel_for_8c example ex_parallel_team_8c example ex_pcre_8c example ex_pretty_8c example ex_pth_8c example ex_query_8c example ex_random_8c example ex_sha256_8c example ex_signals_8c example ex_spawn_8c example ex_ssrf_8c example ex_stack_8c example ex_threads_8c example ex_tiff_8c example ex_time_formats_8c example ex_trajectory_8c example ex_trees_8c example ex_url_8c example ex_url_safe_8c example ex_wrap_8c example ex_x509_8c example ex_zip_8c example ex_zlib_8c example mainpage_8dox n__3d_8c n__3d_8h n__aabb_8c n__aabb_8h n__allegro5_8c n__allegro5_8h n__allegro__4_8c n__allegro__4_8h n__anim_8c n__anim_8h n__astar_8c n__astar_8h n__atlas_8c n__atlas_8h n__avro_8c n__avro_8h n__base64_8c n__base64_8h n__clipboard_8c n__clipboard_8h n__clock__sync_8c n__clock__sync_8h n__common_8c n__common_8h n__config__file_8c n__config__file_8h n__cookies_8c n__cookies_8h n__crypto_8c n__crypto_8h n__dead__reckoning_8c 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5 Struct N_GUI_SLIDER_DATA
gullradriel edited this page 2026-10-09 00:55:18 +02:00
Table of Contents

N_GUI_SLIDER_DATA

Module: GUI: allegro5 widget system with pseudo-windows

slider specific data

#include "n_gui.h"

Public Attributes

Name
int value_visible
draw the built-in value label next to/below the handle.
char[32] value_format
printf-style format string applied to the numeric value when the built-in readout draws.
double value
current value (always snapped to step)
void * user_data
user data for callback
ALLEGRO_BITMAP * track_bitmap
optional bitmap for the track/rail background (NULL = color theme)
double step
step increment (0 is treated as 1).
int orientation
orientation: N_GUI_SLIDER_H or N_GUI_SLIDER_V
void(*)(int widget_id, double value, void *user_data) on_change
callback on value change
int mode
mode: N_GUI_SLIDER_VALUE or N_GUI_SLIDER_PERCENT
double min_val
minimum value
double max_val
maximum value
double key_step
increment applied by the arrow keys and the mouse wheel, when it should differ from step.
int has_default
non-zero once n_gui_slider_set_default() gave the slider a default, which a double click on it puts back
ALLEGRO_BITMAP * handle_hover_bitmap
optional bitmap for the handle on hover (NULL = fallback to handle_bitmap)
ALLEGRO_BITMAP * handle_bitmap
optional bitmap for the draggable handle, normal state (NULL = color theme)
ALLEGRO_BITMAP * handle_active_bitmap
optional bitmap for the handle while dragging (NULL = fallback to handle_bitmap)
ALLEGRO_BITMAP * fill_bitmap
optional bitmap for the filled portion of the track (NULL = color theme)
double default_value
the value a double click puts back, when has_default is set

Public Attributes Documentation

variable value_visible

int value_visible;

draw the built-in value label next to/below the handle.

Default 1 (on) for backward compatibility. Set to 0 when the consumer is already painting the value elsewhere (e.g. a status bar) to avoid the double-render gotcha.

variable value_format

char[32] value_format;

printf-style format string applied to the numeric value when the built-in readout draws.

Empty (first byte '\0') selects the legacy defaults: "%.1f" for VALUE mode, "%.0f%%" for PERCENT. Set via n_gui_slider_set_value_format().

variable value

double value;

current value (always snapped to step)

variable user_data

void * user_data;

user data for callback

variable track_bitmap

ALLEGRO_BITMAP * track_bitmap;

optional bitmap for the track/rail background (NULL = color theme)

variable step

double step;

step increment (0 is treated as 1).

All values snap to nearest multiple of step from min_val.

variable orientation

int orientation;

orientation: N_GUI_SLIDER_H or N_GUI_SLIDER_V

variable on_change

void(*)(int widget_id, double value, void *user_data) on_change;

callback on value change

variable mode

int mode;

mode: N_GUI_SLIDER_VALUE or N_GUI_SLIDER_PERCENT

variable min_val

double min_val;

minimum value

variable max_val

double max_val;

maximum value

variable key_step

double key_step;

increment applied by the arrow keys and the mouse wheel, when it should differ from step.

0 falls back to step, and then to a twentieth of the range, which is what every slider did before this existed. Set via n_gui_slider_set_key_step().

variable has_default

int has_default;

non-zero once n_gui_slider_set_default() gave the slider a default, which a double click on it puts back

variable handle_hover_bitmap

ALLEGRO_BITMAP * handle_hover_bitmap;

optional bitmap for the handle on hover (NULL = fallback to handle_bitmap)

variable handle_bitmap

ALLEGRO_BITMAP * handle_bitmap;

optional bitmap for the draggable handle, normal state (NULL = color theme)

variable handle_active_bitmap

ALLEGRO_BITMAP * handle_active_bitmap;

optional bitmap for the handle while dragging (NULL = fallback to handle_bitmap)

variable fill_bitmap

ALLEGRO_BITMAP * fill_bitmap;

optional bitmap for the filled portion of the track (NULL = color theme)

variable default_value

double default_value;

the value a double click puts back, when has_default is set

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