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Page: ex__gui__datagrid_8c
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Examples Files Home Module AABB3D Module ACCEPT_POOL Module ALLEGRO4 Module ALLEGRO5 Module ANIM_LIB Module ASTAR Module ATLAS_LIB Module AVRO Module CLOCK_SYNC Module COMMONS Module CONFIGFILE Module CYPHER_BASE64 Module CYPHER_VIGENERE Module DEAD_RECKONING Module ENUMS Module EXCEPTIONS Module GAME_ENV Module GIT Module GUI Module HASH_TABLE Module ISOMETRIC_ENGINE Module LIST Module LOG Module LOGNODUP Module LZ4 Module NETWORKING Module NETWORK_MSG Module N_COOKIES Module N_DIFF Module N_DIGEST Module N_DISK_CACHE Module N_DNS Module N_ECC Module N_ENTROPY Module N_FILES Module N_FLUIDS Module N_GUI_COLOR Module N_GUI_COLORWHEEL Module N_GUI_CURVE Module N_GUI_GRID Module N_GUI_POPUP Module N_HEX Module N_HTTP3 Module N_HTTP_COOKIE Module N_HTTP_FORM Module N_HTTP_MIME Module N_HTTP_REQ Module N_HTTP_RESP Module N_HTTP_ROUTER Module N_HTTP_SERVER Module N_ICC Module N_JSON Module N_KAFKA Module N_LINALG Module N_MODULE Module N_OPENSSL_COMPAT Module N_PRETTY Module N_PTH Module N_QUERY Module N_RANDOM Module N_SHA256 Module N_STR Module N_TIFF Module N_TIME Module N_USER Module N_X509 Module N_ZIP Module PARTICLES Module PCRE Module PHYSICS Module SIGNALS Module STACK Module THREADS Module TRAJECTORY Module TREE Module ZLIB Modules Pages Struct A4_BMP Struct A4_TIMER Struct AABB3D Struct ANIM_DATA Struct ANIM_FRAME Struct ANIM_GFX Struct ANIM_LIB Struct ASTAR_BOX Struct ASTAR_CELL Struct ASTAR_GRID Struct ASTAR_HEAP Struct ASTAR_HEAP_NODE Struct ASTAR_NODE Struct ASTAR_PATH Struct AVRO_FIELD Struct AVRO_READER Struct AVRO_SCHEMA Struct BITMAP Struct CALLBACK_DATA Struct CA_CTX Struct CLIENT_JOB Struct CLIENT_STATE Struct CONFIG_FILE Struct CONFIG_FILE_SECTION Struct CYPHER_PARAM Struct DATA Struct DEMO_PANEL Struct DICTIONARY_DEFINITION Struct DICTIONARY_ENTRY Struct DIFF_OUT Struct DIFF_TEXT Struct DRAW_STATE Struct DR_ENTITY Struct DR_STATE Struct DR_VEC3 Struct ExceptionContextList Struct FONT Struct GAME_ENV Struct H2BUF Struct H2_DYN_ENTRY Struct H2_STREAM Struct HASH_NODE Struct HASH_TABLE Struct ISO_DRAW_ENTRY Struct ISO_MAP Struct ISO_PROJECTION Struct ISO_TILE_SEGMENT Struct ISO_TILE_SEGMENTS Struct ISO_VISIBLE_EDGES Struct JS_STATE Struct LEX_ITEM Struct LIST Struct LIST_NODE Struct LOG_LEVELS Struct LexMenu Struct MEMBER Struct MIDI Struct NESTED Struct NETWORK Struct NETWORK_HTTP_INFO Struct NETWORK_POOL Struct NETWORK_SSL_THREAD_PARAMS Struct NETW_ACCEPT_POOL Struct NETW_ACCEPT_POOL_STATS Struct NETW_MSG Struct NETW_SNI_ARG Struct NODE_DATA Struct N_ATLAS Struct N_ATLAS_PAGE Struct N_CLOCK_SYNC Struct N_COOKIE Struct N_COOKIE_JAR Struct N_DIFF_LINE Struct N_DIFF_RESULT Struct N_DISK_CACHE Struct N_ENTROPY_BIT Struct N_ENTROPY_POS Struct N_FILE_INFO Struct N_FLUID Struct N_FLUID_THREAD_PARAMS Struct N_FORM_FIELD Struct N_GIT_COMMIT_INFO Struct N_GIT_REMOTE_AUTH Struct N_GIT_REPO Struct N_GIT_STATUS_ENTRY Struct N_GUI_BUTTON_DATA Struct N_GUI_CHECKBOX_DATA Struct N_GUI_COLOR_PICKER Struct N_GUI_COMBOBOX_DATA Struct N_GUI_CTX Struct N_GUI_CUSTOM_DATA Struct N_GUI_DATAGRID_COL Struct N_GUI_DATAGRID_DATA Struct N_GUI_DROPMENU_DATA Struct N_GUI_DROPMENU_ENTRY Struct N_GUI_GRID_CALLBACKS Struct N_GUI_HEXVIEW_DATA Struct N_GUI_IMAGE_DATA Struct N_GUI_KVTABLE Struct N_GUI_KV_CONTENT Struct N_GUI_KV_ROW Struct N_GUI_LABEL_DATA Struct N_GUI_LISTBOX_DATA Struct N_GUI_LISTITEM Struct N_GUI_MARKDOWNVIEW_DATA Struct N_GUI_MD_FONTS Struct N_GUI_MD_STYLE Struct N_GUI_MEAS_ENTRY Struct N_GUI_MOUSE_EVENT Struct N_GUI_PENDING_GEOM Struct N_GUI_PENDING_WIDGET Struct N_GUI_POPUP Struct N_GUI_PROGRESSBAR_DATA Struct N_GUI_RADIOLIST_DATA Struct N_GUI_SB_TRACK Struct N_GUI_SCROLLBAR_DATA Struct N_GUI_SECTION Struct N_GUI_SECTIONLIST Struct N_GUI_SLIDER_DATA Struct N_GUI_SPLITPANE_DATA Struct N_GUI_STYLE Struct N_GUI_SUGGEST_SINK Struct N_GUI_SYNTAXVIEW_DATA Struct N_GUI_TAB_PANEL Struct N_GUI_TB_BUTTONS Struct N_GUI_TEXTAREA_DATA Struct N_GUI_TEXT_DIMS Struct N_GUI_THEME Struct N_GUI_TREE Struct N_GUI_TREE_NODE Struct N_GUI_TREE_STATE Struct N_GUI_WIDGET Struct N_GUI_WINDOW Struct N_H2_FRAME Struct N_H2_HEADER Struct N_H2_HPACK Struct N_H2_REQUEST Struct N_H2_SERVER Struct N_H2_SETTING Struct N_HTML_ATTR_ Struct N_HTML_FORM Struct N_HTML_TAG_ Struct N_HTTP3_RESPONSE Struct N_HTTP_FIELD Struct N_HTTP_FORM Struct N_HTTP_FORM_MULTIPART Struct N_HTTP_FORM_PART Struct N_HTTP_MULTIPART_PART Struct N_HTTP_REQUEST Struct N_HTTP_RESP Struct N_HTTP_RESPONSE Struct N_HTTP_SERVER Struct N_HTTP_SERVER_CONFIG Struct N_HTTP_SERVER_REQUEST Struct N_HTTP_SERVER_STATS Struct N_HTTP_SET_COOKIE Struct N_HTTP_STREAM Struct N_ISO_CAMERA Struct N_ISO_OBJECT Struct N_KAFKA Struct N_KAFKA_EVENT Struct N_MOCK_SERVER Struct N_MODULE Struct N_PARALLEL_SLICE Struct N_PARALLEL_TEAM Struct N_PARALLEL_WORKER Struct N_PCRE Struct N_PROXY_CFG Struct N_PTH Struct N_PTH_TENSOR Struct N_QUERY Struct N_ROUTE Struct N_ROUTER Struct N_ROUTE_MATCH Struct N_SHA256 Struct N_SOCKET Struct N_SPAWN_PIPE Struct N_SSE_CONN Struct N_SSE_EVENT Struct N_STR Struct N_TIFF Struct N_TIFF_ENTRY Struct N_TIME Struct N_URL Struct N_URL_PARAM Struct N_USER Struct N_USERLIST Struct N_WS_CONN Struct N_WS_FRAME Struct N_WS_MESSAGE Struct N_ZIP_MEMBER Struct OCTREE Struct OCTREE_NODE Struct PARSER Struct PARTICLE Struct PARTICLE_EMITTER Struct PARTICLE_SYSTEM Struct PEER Struct PHYSICS Struct PK_OBJ Struct PK_VM Struct POINT2D Struct POINT3D Struct PRETTY_OUT Struct QNODE Struct QUADTREE Struct QUADTREE_NODE Struct REC Struct RGB Struct SAMPLE Struct SEEN Struct SHARER Struct SRV Struct SRV_ARG Struct STACK Struct STACK_ITEM Struct SYNTAX_RUN Struct THREAD_POOL Struct THREAD_POOL_NODE Struct THREAD_WAITING_PROC Struct TRAJECTORY Struct TRAJECTORY_POINT Struct TREE Struct TREE_NODE Struct TS_LOG Struct WAYPOINT3D Struct WORKER_ARG Struct ZIP_SINK Struct _N_DC_ENTRY Struct _N_DC_GROUP_ENTRY Struct _N_GUI_COLORWHEEL Struct _N_GUI_COLORWHEEL_BLOCK Struct _N_GUI_COLORWHEEL_MOUSE Struct _N_GUI_CURVE Struct _N_GUI_CURVE_BLOCK Struct _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 ex__accept__pool__client_8c ex__accept__pool__server_8c ex__allegro__4_8c ex__atlas_8c ex__avro_8c ex__base64_8c ex__bind__exclusive_8c ex__clipboard_8c ex__clock__sync_8c ex__common_8c ex__configfile_8c ex__cookies_8c ex__crypto_8c ex__diff_8c ex__digest_8c ex__disk__cache_8c ex__dns_8c ex__ecc_8c ex__entropy_8c ex__exceptions_8c ex__file_8c ex__file__copy_8c ex__fluid_8c ex__fluid__config_8c ex__fluid__config_8h ex__git_8c ex__gui_8c ex__gui__bench_8c ex__gui__button__keys_8c ex__gui__checkbox__label_8c ex__gui__checkbox__release_8c ex__gui__color__picker_8c ex__gui__colorwheel_8c ex__gui__combobox__items_8c ex__gui__combobox__wheel_8c ex__gui__cursor_8c ex__gui__curve_8c ex__gui__custom_8c ex__gui__custom__mouse_8c ex__gui__datagrid_8c ex__gui__datagrid__keys_8c ex__gui__datagrid__sort_8c ex__gui__detach_8c ex__gui__dictionary_8c ex__gui__display__fallback_8c ex__gui__double__click_8c ex__gui__dropmenu_8c ex__gui__frameless__drag_8c ex__gui__global__scroll_8c ex__gui__glyph_8c ex__gui__grid_8c ex__gui__hexview_8c ex__gui__hover_8c ex__gui__isometric_8c ex__gui__kvtable_8c ex__gui__label__fits_8c ex__gui__label__lines_8c ex__gui__layout__persist_8c ex__gui__listbox_8c ex__gui__md_8c ex__gui__multiwin_8c ex__gui__network_8c ex__gui__particles_8c ex__gui__placeholder_8c ex__gui__popup_8c ex__gui__progressbar_8c ex__gui__reentrant_8c ex__gui__round_8c ex__gui__sectionlist_8c ex__gui__slider__default_8c ex__gui__slider__handle_8c ex__gui__slider__step_8c ex__gui__splitpane_8c ex__gui__suggest_8c ex__gui__syntaxview_8c ex__gui__text__shorten_8c ex__gui__textarea__selection_8c ex__gui__tooltip_8c ex__gui__tree__lazy_8c ex__gui__tree__order_8c ex__gui__tree__state_8c ex__gui__window__rect_8c ex__gui__zorder_8c ex__hash_8c ex__hex_8c ex__html_8c ex__http2_8c ex__http2__server_8c ex__http3_8c ex__http__cookie_8c ex__http__form_8c ex__http__mime_8c ex__http__req_8c ex__http__response_8c ex__http__router_8c ex__http__server_8c ex__icc_8c ex__iso__astar_8c ex__json_8c ex__kafka_8c ex__linalg_8c ex__list_8c ex__log_8c ex__markdown_8c ex__module_8c ex__monolith_8c ex__network_8c ex__network_8h ex__network__accept_8c ex__network__alpn_8c ex__network__connect__abort_8c ex__network__mock_8c ex__network__proxy_8c ex__network__reactor_8c ex__network__sni_8c ex__network__sse_8c ex__network__ssl_8c ex__network__ssl__hardened_8c ex__network__ssl__hostname_8c ex__network__ssl__nonblock_8c ex__network__tls__defaults_8c ex__network__ws_8c ex__network__ws__limits_8c ex__nstr_8c ex__parallel__for_8c ex__parallel__team_8c ex__pcre_8c ex__pretty_8c ex__pth_8c ex__query_8c ex__random_8c ex__sha256_8c ex__signals_8c ex__spawn_8c ex__ssrf_8c ex__stack_8c ex__thread__pool__discard_8c ex__thread__pool__wait_8c ex__threads_8c ex__tiff_8c ex__time__formats_8c ex__trajectory_8c ex__trees_8c ex__url_8c ex__url__safe_8c ex__wrap_8c ex__x509_8c ex__zip_8c ex__zlib_8c ex_accept_pool_client_8c example ex_accept_pool_server_8c example ex_allegro_4_8c example ex_atlas_8c example ex_base64_8c example ex_clock_sync_8c example ex_common_8c example ex_configfile_8c example ex_cookies_8c example ex_crypto_8c example ex_diff_8c example ex_digest_8c example ex_disk_cache_8c example ex_dns_8c example ex_ecc_8c example ex_entropy_8c example ex_exceptions_8c example ex_file_8c example ex_file_copy_8c example ex_fluid_8c example ex_fluid_config_8c example ex_fluid_config_8h example ex_git_8c example ex_gui_8c example ex_gui_bench_8c example ex_gui_button_keys_8c example ex_gui_checkbox_label_8c example ex_gui_checkbox_release_8c example ex_gui_color_picker_8c example ex_gui_colorwheel_8c example ex_gui_combobox_items_8c example ex_gui_combobox_wheel_8c example ex_gui_cursor_8c example ex_gui_curve_8c example ex_gui_custom_8c example ex_gui_custom_mouse_8c example ex_gui_datagrid_8c example ex_gui_datagrid_keys_8c example ex_gui_datagrid_sort_8c example ex_gui_detach_8c example ex_gui_dictionary_8c example ex_gui_display_fallback_8c example ex_gui_double_click_8c example ex_gui_dropmenu_8c example ex_gui_frameless_drag_8c example ex_gui_global_scroll_8c example ex_gui_glyph_8c example ex_gui_grid_8c example ex_gui_hexview_8c example ex_gui_hover_8c example ex_gui_isometric_8c example ex_gui_kvtable_8c example ex_gui_label_fits_8c example ex_gui_label_lines_8c example ex_gui_layout_persist_8c example ex_gui_listbox_8c example ex_gui_md_8c example ex_gui_multiwin_8c example ex_gui_network_8c example ex_gui_particles_8c example ex_gui_placeholder_8c example ex_gui_popup_8c example ex_gui_progressbar_8c example ex_gui_reentrant_8c example ex_gui_round_8c example ex_gui_sectionlist_8c example ex_gui_slider_default_8c example ex_gui_slider_handle_8c example ex_gui_slider_step_8c example ex_gui_splitpane_8c example ex_gui_suggest_8c example ex_gui_syntaxview_8c example ex_gui_text_shorten_8c example ex_gui_textarea_selection_8c example ex_gui_tooltip_8c example ex_gui_tree_lazy_8c example ex_gui_tree_order_8c example ex_gui_tree_state_8c example ex_gui_window_rect_8c example ex_gui_zorder_8c example ex_hash_8c example ex_hex_8c example ex_html_8c example ex_http2_8c example ex_http2_server_8c example ex_http_cookie_8c example ex_http_form_8c example ex_http_mime_8c example ex_http_req_8c example ex_http_response_8c example ex_http_router_8c example ex_http_server_8c example ex_icc_8c example ex_iso_astar_8c example ex_json_8c example ex_kafka_8c example ex_linalg_8c example ex_list_8c example ex_log_8c example ex_markdown_8c example ex_module_8c example ex_monolith_8c example ex_network_8c example ex_network_8h example ex_network_accept_8c example ex_network_alpn_8c example ex_network_connect_abort_8c example ex_network_mock_8c example ex_network_proxy_8c example ex_network_reactor_8c example ex_network_sni_8c example ex_network_sse_8c example ex_network_ssl_8c example ex_network_ssl_hardened_8c example ex_network_ssl_hostname_8c example ex_network_ssl_nonblock_8c example ex_network_tls_defaults_8c example ex_network_ws_8c 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 n__dead__reckoning_8h n__diff_8c n__diff_8h n__digest_8c n__digest_8h n__disk__cache_8c n__disk__cache_8h n__dns_8c n__dns_8h n__ecc_8c n__ecc_8h n__entropy_8c n__entropy_8h n__enum_8h n__exceptions_8c n__exceptions_8h n__files_8c n__files_8h n__fluids_8c n__fluids_8h n__games_8c n__games_8h n__git_8c n__git_8h n__gui_8c n__gui_8h n__gui__color_8c n__gui__color_8h n__gui__colorwheel_8c n__gui__colorwheel_8h n__gui__curve_8c n__gui__curve_8h n__gui__grid_8c n__gui__grid_8h n__gui__md_8c n__gui__md_8h n__gui__popup_8c n__gui__popup_8h n__hash_8c n__hash_8h n__hex_8c n__hex_8h n__html_8c n__html_8h n__http2_8c n__http2_8h n__http2__server_8c n__http2__server_8h n__http3_8c n__http3_8h n__http__cookie_8c n__http__cookie_8h n__http__form_8c n__http__form_8h n__http__mime_8c n__http__mime_8h n__http__req_8c n__http__req_8h n__http__response_8c n__http__response_8h n__http__router_8c n__http__router_8h n__http__server_8c n__http__server_8h n__icc_8c n__icc_8h n__iso__engine_8c n__iso__engine_8h n__json_8c n__json_8h n__kafka_8c n__kafka_8h n__linalg_8c n__linalg_8h n__list_8c n__list_8h n__log_8c n__log_8h n__lz4_8c n__lz4_8h n__markdown_8c n__markdown_8h n__module_8c n__module_8h n__network_8c n__network_8h n__network__accept__pool_8c n__network__accept__pool_8h n__network__msg_8c n__network__msg_8h n__nodup__log_8c n__nodup__log_8h n__openssl__compat_8h n__particles_8c n__particles_8h n__pcre_8c n__pcre_8h n__pretty_8c n__pretty_8h n__pth_8c n__pth_8h n__query_8c n__query_8h n__random_8c n__random_8h n__reactor_8c n__reactor_8h n__sha256_8c n__sha256_8h n__signals_8c n__signals_8h n__ssrf_8c n__ssrf_8h n__stack_8c n__stack_8h n__str_8c n__str_8h n__thread__pool_8c n__thread__pool_8h n__tiff_8c n__tiff_8h n__time_8c n__time_8h n__trajectory_8c n__trajectory_8h n__trees_8c n__trees_8h n__url__safe_8c n__url__safe_8h n__user_8c n__user_8h n__windows_8h n__wrap_8c n__wrap_8h n__x509_8c n__x509_8h n__zip_8c n__zip_8h n__zlib_8c n__zlib_8h nilorea_8h
6 ex__gui__datagrid_8c
gullradriel edited this page 2026-10-09 00:55:18 +02:00
Table of Contents

examples/ex_gui_datagrid.c

Functions

Name
int process_args(int argc, char ** argv)
void on_ctx(int widget_id, int row, int x, int y, void * user_data)
void on_cols_changed(int widget_id, void * user_data)
int main(int argc, char ** argv)
void expect_true(const char * label, int cond)
void expect_streq(const char * label, const char * got, const char * want)

Attributes

Name
int log_level
int g_ctx_y
int g_ctx_x
int g_ctx_row
int g_ctx_calls
int g_cols_changed
int failures

Defines

Name
ALLEGRO_UNSTABLE

Functions Documentation

function process_args

static int process_args(
    int argc,
    char ** argv
)

function on_ctx

static void on_ctx(
    int widget_id,
    int row,
    int x,
    int y,
    void * user_data
)

function on_cols_changed

static void on_cols_changed(
    int widget_id,
    void * user_data
)

function main

int main(
    int argc,
    char ** argv
)

function expect_true

static void expect_true(
    const char * label,
    int cond
)

function expect_streq

static void expect_streq(
    const char * label,
    const char * got,
    const char * want
)

Attributes Documentation

variable log_level

static int log_level = 3;

variable g_ctx_y

static int g_ctx_y = -1;

variable g_ctx_x

static int g_ctx_x = -1;

variable g_ctx_row

static int g_ctx_row = -1;

variable g_ctx_calls

static int g_ctx_calls = 0;

variable g_cols_changed

static int g_cols_changed = 0;

variable failures

static int failures = 0;

Macros Documentation

define ALLEGRO_UNSTABLE

#define ALLEGRO_UNSTABLE 1

Source code

/*
 * Nilorea Library
 * Copyright (C) 2005-2026 Castagnier Mickael
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
 * implied. See the License for the specific language governing
 * permissions and limitations under the License.
 *
 * SPDX-License-Identifier: Apache-2.0
 */


#define ALLEGRO_UNSTABLE 1

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#include "nilorea/n_common.h"
#include "nilorea/n_log.h"
#include "nilorea/n_gui.h"

static int log_level = LOG_ERR;
static int failures = 0;

static int process_args(int argc, char** argv) {
    int opt;
    while ((opt = getopt(argc, argv, "V:")) != -1) {
        switch (opt) {
            case 'V':
                if (!strcmp("LOG_NULL", optarg))
                    log_level = LOG_NULL;
                else if (!strcmp("LOG_NOTICE", optarg))
                    log_level = LOG_NOTICE;
                else if (!strcmp("LOG_INFO", optarg))
                    log_level = LOG_INFO;
                else if (!strcmp("LOG_ERR", optarg))
                    log_level = LOG_ERR;
                else if (!strcmp("LOG_DEBUG", optarg))
                    log_level = LOG_DEBUG;
                else
                    return -1;
                break;
            default:
                return -1;
        }
    }
    return 0;
}

static void expect_true(const char* label, int cond) {
    if (!cond) {
        n_log(LOG_ERR, "%s: condition false", label);
        failures++;
    }
}

static void expect_streq(const char* label, const char* got, const char* want) {
    if (!got || strcmp(got, want) != 0) {
        n_log(LOG_ERR, "%s: got '%s', expected '%s'", label, got ? got : "(null)", want);
        failures++;
    }
}

/* column-layout-changed callback capture (fired on a header-border resize drag) */
static int g_cols_changed = 0;
static void on_cols_changed(int widget_id, void* user_data) {
    (void)widget_id;
    (void)user_data;
    g_cols_changed++;
}

/* right-click context callback capture */
static int g_ctx_calls = 0;
static int g_ctx_row = -1;
static int g_ctx_x = -1;
static int g_ctx_y = -1;
static void on_ctx(int widget_id, int row, int x, int y, void* user_data) {
    (void)widget_id;
    (void)user_data;
    g_ctx_calls++;
    g_ctx_row = row;
    g_ctx_x = x;
    g_ctx_y = y;
}

int main(int argc, char** argv) {
    set_log_level(LOG_ERR);
    if (process_args(argc, argv) != 0) {
        fprintf(stderr, "Usage: %s [-V LOG_LEVEL]\n", argv[0]);
        return 2;
    }
    set_log_level(log_level);

    if (!al_init() || !al_init_font_addon()) {
        n_log(LOG_ERR, "allegro init failed");
        return 1;
    }
    ALLEGRO_FONT* font = al_create_builtin_font();
    if (!font) {
        n_log(LOG_ERR, "al_create_builtin_font failed");
        return 1;
    }
    N_GUI_CTX* gui = n_gui_new_ctx(font);
    if (!gui) {
        n_log(LOG_ERR, "n_gui_new_ctx failed");
        al_destroy_font(font);
        return 1;
    }
    n_gui_set_display_size(gui, 800.0f, 600.0f);

    int win = n_gui_add_window(gui, "Panel", 0.0f, 0.0f, 800.0f, 600.0f);
    expect_true("window created", win >= 0);
    /* frameless: no titlebar offset, so the context-menu hit test below has
       simple window-relative coordinates */
    n_gui_window_set_flags(gui, win, N_GUI_WIN_FRAMELESS);

    int dg = n_gui_add_datagrid(gui, win, 0.0f, 0.0f, 600.0f, 400.0f, NULL, NULL);
    expect_true("datagrid created", dg >= 0);

    expect_true("column 0 added", n_gui_datagrid_add_column(gui, dg, "#", 60.0f) == 0);
    expect_true("column 1 added", n_gui_datagrid_add_column(gui, dg, "Method", 100.0f) == 1);
    expect_true("column 2 added", n_gui_datagrid_add_column(gui, dg, "Status", 80.0f) == 2);

    {
        /* the columns' own width drives a host's minimum dialog width; it is the
         * left text pad plus every VISIBLE column, and hiding one drops it */
        float pad = gui->style.item_text_padding;
        expect_true("columns_width sums the visible columns",
                    n_gui_datagrid_columns_width(gui, dg) == pad + 60.0f + 100.0f + 80.0f);
        n_gui_datagrid_set_column_visible(gui, dg, 1, 0);
        expect_true("columns_width drops a hidden column",
                    n_gui_datagrid_columns_width(gui, dg) == pad + 60.0f + 80.0f);
        n_gui_datagrid_set_column_visible(gui, dg, 1, 1);
        int not_a_grid = n_gui_add_button(gui, win, "b", 0.0f, 500.0f, 40.0f, 20.0f,
                                          N_GUI_SHAPE_RECT, NULL, NULL);
        expect_true("columns_width is 0 for a non-datagrid widget",
                    n_gui_datagrid_columns_width(gui, not_a_grid) == 0.0f);
        expect_true("columns_width is 0 for an unknown id",
                    n_gui_datagrid_columns_width(gui, 4242) == 0.0f);
    }

    {
        const char* r0[] = {"3", "GET", "200"};
        const char* r1[] = {"1", "POST", "404"};
        const char* r2[] = {"2", "GET", "500"};
        n_gui_datagrid_add_row(gui, dg, r0);
        n_gui_datagrid_add_row(gui, dg, r1);
        n_gui_datagrid_add_row(gui, dg, r2);
    }
    expect_true("row count is 3", n_gui_datagrid_get_row_count(gui, dg) == 3);
    expect_streq("cell(0,1) before sort", n_gui_datagrid_get_cell(gui, dg, 0, 1), "GET");

    /* columns are locked once rows exist */
    expect_true("late column rejected", n_gui_datagrid_add_column(gui, dg, "Late", 50.0f) == -1);

    /* selection round-trip (before sort, which clears selection) */
    n_gui_datagrid_set_selected(gui, dg, 2);
    expect_true("selected row is 2", n_gui_datagrid_get_selected(gui, dg) == 2);

    /* numeric ascending sort on the id column */
    n_gui_datagrid_sort(gui, dg, 0, 1);
    expect_streq("id asc row0", n_gui_datagrid_get_cell(gui, dg, 0, 0), "1");
    expect_streq("id asc row2", n_gui_datagrid_get_cell(gui, dg, 2, 0), "3");

    /* numeric sort on status: 200 < 404 < 500 (not lexical) */
    n_gui_datagrid_sort(gui, dg, 2, 1);
    expect_streq("status asc row0", n_gui_datagrid_get_cell(gui, dg, 0, 2), "200");
    expect_streq("status asc row2", n_gui_datagrid_get_cell(gui, dg, 2, 2), "500");

    /* descending */
    n_gui_datagrid_sort(gui, dg, 2, -1);
    expect_streq("status desc row0", n_gui_datagrid_get_cell(gui, dg, 0, 2), "500");

    /* right-click context callback: a right press over a data row selects it and
       fires on_context with the cursor position (the basis for GUI context menus).
       The window is frameless, so a data row r sits at y in [(r+1)*row_h, (r+2)*row_h). */
    {
        ALLEGRO_EVENT ev;
        float row_h = (float)al_get_font_line_height(font) + gui->style.item_height_pad;
        int cx = 30;                  /* inside column 0 (width 60) */
        int cy = (int)(row_h * 2.5f); /* header + row 1 center */
        n_gui_datagrid_set_on_context(gui, dg, on_ctx);
        memset(&ev, 0, sizeof(ev));
        ev.type = ALLEGRO_EVENT_MOUSE_BUTTON_DOWN;
        ev.mouse.x = cx;
        ev.mouse.y = cy;
        ev.mouse.button = 2;
        n_gui_process_event(gui, ev);
        expect_true("context callback fired once", g_ctx_calls == 1);
        expect_true("context row is 1", g_ctx_row == 1);
        expect_true("context selects row 1", n_gui_datagrid_get_selected(gui, dg) == 1);
        expect_true("context x echoes cursor", g_ctx_x == cx);
        expect_true("context y echoes cursor", g_ctx_y == cy);

        /* a left click selects but must not fire the context callback */
        ev.type = ALLEGRO_EVENT_MOUSE_BUTTON_DOWN;
        ev.mouse.button = 1;
        n_gui_process_event(gui, ev);
        ev.type = ALLEGRO_EVENT_MOUSE_BUTTON_UP;
        n_gui_process_event(gui, ev);
        expect_true("left click does not fire context", g_ctx_calls == 1);
    }

    /* multi-row selection: enable it, build a selection programmatically, query it,
       then confirm a plain click collapses to one row and a sort clears it */
    {
        int sel[8];
        size_t k;
        ALLEGRO_EVENT ev;
        float row_h = (float)al_get_font_line_height(font) + gui->style.item_height_pad;
        n_gui_datagrid_set_multiselect(gui, dg, 1);
        n_gui_datagrid_clear_selection(gui, dg);
        expect_true("multiselect: none selected initially", n_gui_datagrid_get_selected_rows(gui, dg, NULL, 0) == 0);
        n_gui_datagrid_select_row(gui, dg, 0, 1);
        n_gui_datagrid_select_row(gui, dg, 2, 1);
        expect_true("multiselect: two rows selected", n_gui_datagrid_get_selected_rows(gui, dg, NULL, 0) == 2);
        expect_true("multiselect: row 0 is selected", n_gui_datagrid_is_row_selected(gui, dg, 0) == 1);
        expect_true("multiselect: row 1 is not selected", n_gui_datagrid_is_row_selected(gui, dg, 1) == 0);
        k = n_gui_datagrid_get_selected_rows(gui, dg, sel, 8);
        expect_true("multiselect: indices are 0 and 2, ascending", k == 2 && sel[0] == 0 && sel[1] == 2);
        n_gui_datagrid_select_row(gui, dg, 0, 0); /* deselect row 0 */
        expect_true("multiselect: one selected after deselect", n_gui_datagrid_get_selected_rows(gui, dg, NULL, 0) == 1);

        /* a plain left click (no Ctrl/Shift) collapses the selection to one row */
        memset(&ev, 0, sizeof(ev));
        ev.type = ALLEGRO_EVENT_MOUSE_BUTTON_DOWN;
        ev.mouse.x = 30;
        ev.mouse.y = (int)(row_h * 1.5f); /* header + row 0 center */
        ev.mouse.button = 1;
        n_gui_process_event(gui, ev);
        ev.type = ALLEGRO_EVENT_MOUSE_BUTTON_UP;
        n_gui_process_event(gui, ev);
        expect_true("multiselect: plain click selects exactly one", n_gui_datagrid_get_selected_rows(gui, dg, NULL, 0) == 1);
        expect_true("multiselect: plain click selects row 0", n_gui_datagrid_is_row_selected(gui, dg, 0) == 1);

        /* a sort changes row indices, so it clears the selection */
        n_gui_datagrid_select_row(gui, dg, 1, 1);
        n_gui_datagrid_sort(gui, dg, 0, -1);
        expect_true("multiselect: sort clears the selection", n_gui_datagrid_get_selected_rows(gui, dg, NULL, 0) == 0);

        /* with multi-select off, the query reports the single selected row */
        n_gui_datagrid_set_multiselect(gui, dg, 0);
        n_gui_datagrid_set_selected(gui, dg, 1);
        expect_true("single-select: get_selected_rows reports one", n_gui_datagrid_get_selected_rows(gui, dg, NULL, 0) == 1);
    }

    /* ---- per-row background tints: set, query, follow a sort, and clear ---- */
    {
        ALLEGRO_COLOR got;
        const char* r0[] = {"3", "GET", "200"};
        const char* r1[] = {"1", "POST", "404"};
        const char* r2[] = {"2", "GET", "500"};
        n_gui_datagrid_clear_rows(gui, dg);
        n_gui_datagrid_add_row(gui, dg, r0);
        n_gui_datagrid_add_row(gui, dg, r1);
        n_gui_datagrid_add_row(gui, dg, r2);

        expect_true("no tint by default", n_gui_datagrid_get_row_color(gui, dg, 0, NULL) == 0);
        n_gui_datagrid_set_row_color(gui, dg, 0, al_map_rgb(255, 0, 0)); /* id 3 -> red */
        n_gui_datagrid_set_row_color(gui, dg, 2, al_map_rgb(0, 0, 255)); /* id 2 -> blue */
        expect_true("row 0 tinted", n_gui_datagrid_get_row_color(gui, dg, 0, &got) == 1 && got.r > 0.9f && got.b < 0.1f);
        expect_true("row 1 untinted", n_gui_datagrid_get_row_color(gui, dg, 1, NULL) == 0);
        expect_true("row 2 tinted", n_gui_datagrid_get_row_color(gui, dg, 2, &got) == 1 && got.b > 0.9f && got.r < 0.1f);
        expect_true("out-of-range row has no tint", n_gui_datagrid_get_row_color(gui, dg, 9, NULL) == 0);

        /* a sort reorders the cells physically, so the tints must travel with
           their rows: after ascending on the id column the order is 1, 2, 3, so
           the blue row (id 2) lands at index 1 and the red row (id 3) at index 2 */
        n_gui_datagrid_sort(gui, dg, 0, 1);
        expect_streq("tint sort: row0 is id 1", n_gui_datagrid_get_cell(gui, dg, 0, 0), "1");
        expect_true("tint sort: row 0 (id 1) still untinted", n_gui_datagrid_get_row_color(gui, dg, 0, NULL) == 0);
        expect_true("tint sort: row 1 (id 2) keeps blue", n_gui_datagrid_get_row_color(gui, dg, 1, &got) == 1 && got.b > 0.9f);
        expect_true("tint sort: row 2 (id 3) keeps red", n_gui_datagrid_get_row_color(gui, dg, 2, &got) == 1 && got.r > 0.9f);

        /* a sort shrinks the cell buffer to nb_rows; the tint arrays shrink with
           it, so adding rows afterwards must still grow them safely */
        {
            const char* r3[] = {"9", "PUT", "301"};
            n_gui_datagrid_add_row(gui, dg, r3);
            n_gui_datagrid_set_row_color(gui, dg, 3, al_map_rgb(0, 255, 0));
            expect_true("tint after sort+add", n_gui_datagrid_get_row_color(gui, dg, 3, &got) == 1 && got.g > 0.9f);
            expect_true("tint after sort+add: row 2 kept red", n_gui_datagrid_get_row_color(gui, dg, 2, &got) == 1 && got.r > 0.9f);
        }

        n_gui_datagrid_clear_row_color(gui, dg, 2);
        expect_true("single tint cleared", n_gui_datagrid_get_row_color(gui, dg, 2, NULL) == 0);
        expect_true("other tint kept", n_gui_datagrid_get_row_color(gui, dg, 1, NULL) == 1);
        n_gui_datagrid_clear_row_colors(gui, dg);
        expect_true("all tints cleared", n_gui_datagrid_get_row_color(gui, dg, 1, NULL) == 0);

        /* clearing the rows drops their tints: rebuilt rows start untinted */
        n_gui_datagrid_set_row_color(gui, dg, 0, al_map_rgb(255, 255, 0));
        n_gui_datagrid_clear_rows(gui, dg);
        n_gui_datagrid_add_row(gui, dg, r0);
        expect_true("clear_rows drops tints", n_gui_datagrid_get_row_color(gui, dg, 0, NULL) == 0);
    }

    /* ---- scroll offset: set, read back, clamp, and survive a rebuild ---- */
    {
        int i;
        n_gui_datagrid_clear_rows(gui, dg);
        expect_true("scroll of empty grid is 0", n_gui_datagrid_get_scroll_offset(gui, dg) == 0);
        for (i = 0; i < 40; i++) {
            char a[16], b[16], c[16];
            const char* r[3];
            snprintf(a, sizeof(a), "%d", i);
            snprintf(b, sizeof(b), "M%d", i);
            snprintf(c, sizeof(c), "%d", 200 + i);
            r[0] = a;
            r[1] = b;
            r[2] = c;
            n_gui_datagrid_add_row(gui, dg, r);
        }
        n_gui_datagrid_set_scroll_offset(gui, dg, 12);
        expect_true("scroll offset set to 12", n_gui_datagrid_get_scroll_offset(gui, dg) == 12);
        /* the host preserves scroll across an in-place edit: save, clear+refill, restore */
        {
            int saved = n_gui_datagrid_get_scroll_offset(gui, dg);
            n_gui_datagrid_clear_rows(gui, dg);
            for (i = 0; i < 40; i++) {
                char a[16];
                const char* r[3];
                snprintf(a, sizeof(a), "%d", i);
                r[0] = a;
                r[1] = "M";
                r[2] = "200";
                n_gui_datagrid_add_row(gui, dg, r);
            }
            n_gui_datagrid_set_scroll_offset(gui, dg, saved);
            expect_true("scroll offset survives a clear/refill", n_gui_datagrid_get_scroll_offset(gui, dg) == 12);
        }
        /* an over-range offset clamps into the row range */
        n_gui_datagrid_set_scroll_offset(gui, dg, 9999);
        expect_true("scroll offset clamps to last row", n_gui_datagrid_get_scroll_offset(gui, dg) == 39);
        n_gui_datagrid_set_scroll_offset(gui, dg, -5);
        expect_true("scroll offset clamps to 0", n_gui_datagrid_get_scroll_offset(gui, dg) == 0);
    }

    /* ---- horizontal scroll: set, read back, clamp >= 0, survive a row refill ---- */
    {
        /* widen a column so the total content can exceed a typical pane (h-scroll is
           meaningful); the getter/setter are the persistence hook the host uses to keep
           the horizontal position across an in-place edit, like the vertical one above */
        n_gui_datagrid_set_column_width(gui, dg, 2, 400.0f);
        n_gui_datagrid_set_h_scroll(gui, dg, 80.0f);
        expect_true("h_scroll set to 80", n_gui_datagrid_get_h_scroll(gui, dg) == 80.0f);
        /* the horizontal position is column-based, so a row clear/refill keeps it */
        {
            const char* r[3] = {"1", "M", "200"};
            n_gui_datagrid_clear_rows(gui, dg);
            n_gui_datagrid_add_row(gui, dg, r);
            expect_true("h_scroll survives a row refill", n_gui_datagrid_get_h_scroll(gui, dg) == 80.0f);
        }
        /* a negative offset clamps to 0 (the draw path re-clamps the upper bound live) */
        n_gui_datagrid_set_h_scroll(gui, dg, -25.0f);
        expect_true("h_scroll clamps to 0", n_gui_datagrid_get_h_scroll(gui, dg) == 0.0f);
        n_gui_datagrid_set_h_scroll(gui, dg, 0.0f);
    }

    n_gui_datagrid_clear_rows(gui, dg);
    expect_true("cleared row count is 0", n_gui_datagrid_get_row_count(gui, dg) == 0);

    /* a sort reallocates the cell buffer to exactly nb_rows; adding more rows
       afterwards must still grow safely (regression: rows_cap was left stale, so
       the next add_row wrote past the shrunken buffer -> heap overflow). Stress
       the add -> sort -> add cycle so ASan catches any out-of-bounds write. */
    {
        int i;
        for (i = 0; i < 25; i++) {
            char a[16], b[16], c[16];
            const char* r[3];
            snprintf(a, sizeof(a), "%d", 25 - i);
            snprintf(b, sizeof(b), "GET%d", i);
            snprintf(c, sizeof(c), "%d", 200 + (i % 5));
            r[0] = a;
            r[1] = b;
            r[2] = c;
            n_gui_datagrid_add_row(gui, dg, r);
        }
        n_gui_datagrid_sort(gui, dg, 0, 1); /* shrinks the buffer to nb_rows */
        for (i = 0; i < 25; i++) {          /* push back past the shrunken cap */
            char a[16];
            const char* r[3];
            snprintf(a, sizeof(a), "%d", 100 + i);
            r[0] = a;
            r[1] = "POST";
            r[2] = "201";
            n_gui_datagrid_add_row(gui, dg, r);
        }
        expect_true("rows after sort+add", n_gui_datagrid_get_row_count(gui, dg) == 50);
        n_gui_datagrid_clear_rows(gui, dg);
    }

    /* ---- column customization: count/title, resize-by-drag, width, visibility,
       and reorder (the display-order indirection over the physical cells) ---- */
    expect_true("column count is 3", n_gui_datagrid_get_column_count(gui, dg) == 3);
    expect_streq("column 1 title", n_gui_datagrid_get_column_title(gui, dg, 1), "Method");
    expect_streq("out-of-range title", n_gui_datagrid_get_column_title(gui, dg, 9), "");

    /* dragging column 0's right border (at x=60) widens it and fires the callback */
    n_gui_datagrid_set_on_columns_changed(gui, dg, on_cols_changed);
    {
        ALLEGRO_EVENT ev;
        float row_h = (float)al_get_font_line_height(font) + gui->style.item_height_pad;
        float w0 = n_gui_datagrid_get_column_width(gui, dg, 0);
        memset(&ev, 0, sizeof(ev));
        ev.type = ALLEGRO_EVENT_MOUSE_BUTTON_DOWN;
        ev.mouse.button = 1;
        ev.mouse.x = 60;
        ev.mouse.y = (int)(row_h * 0.5f);
        n_gui_process_event(gui, ev);
        ev.type = ALLEGRO_EVENT_MOUSE_AXES;
        ev.mouse.x = 100;
        n_gui_process_event(gui, ev);
        ev.type = ALLEGRO_EVENT_MOUSE_BUTTON_UP;
        n_gui_process_event(gui, ev);
        expect_true("resize widened column 0", n_gui_datagrid_get_column_width(gui, dg, 0) > w0 + 20.0f);
        expect_true("on_columns_changed fired once", g_cols_changed == 1);
    }

    /* width setter and its minimum clamp */
    n_gui_datagrid_set_column_width(gui, dg, 2, 150.0f);
    expect_true("column width set", n_gui_datagrid_get_column_width(gui, dg, 2) == 150.0f);
    n_gui_datagrid_set_column_width(gui, dg, 2, 3.0f);
    expect_true("column width min clamp", n_gui_datagrid_get_column_width(gui, dg, 2) == 16.0f);

    /* visibility toggle */
    expect_true("col 1 visible by default", n_gui_datagrid_get_column_visible(gui, dg, 1) == 1);
    n_gui_datagrid_set_column_visible(gui, dg, 1, 0);
    expect_true("col 1 now hidden", n_gui_datagrid_get_column_visible(gui, dg, 1) == 0);

    /* reorder: identity, then move display position 0 to 2 -> order {1,2,0} */
    expect_true("display 0 -> phys 0", n_gui_datagrid_display_to_physical(gui, dg, 0) == 0);
    n_gui_datagrid_move_column(gui, dg, 0, 2);
    expect_true("after move display 2 -> phys 0", n_gui_datagrid_display_to_physical(gui, dg, 2) == 0);
    expect_true("after move display 0 -> phys 1", n_gui_datagrid_display_to_physical(gui, dg, 0) == 1);
    expect_true("after move display 1 -> phys 2", n_gui_datagrid_display_to_physical(gui, dg, 1) == 2);
    expect_true("out-of-range display maps to -1", n_gui_datagrid_display_to_physical(gui, dg, 9) == -1);

    /* guards: bad ids and out-of-range moves are no-ops */
    n_gui_datagrid_move_column(gui, dg, 0, 9);
    expect_true("count for bad id is 0", n_gui_datagrid_get_column_count(gui, -1) == 0);

    n_gui_destroy_ctx(&gui);
    al_destroy_font(font);

    if (failures) {
        n_log(LOG_ERR, "ex_gui_datagrid: %d failure(s)", failures);
        return 1;
    }
    n_log(LOG_NOTICE, "ex_gui_datagrid: all checks passed");
    return 0;
}

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