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Add C API and example for MessageDialog
Introduces a C API for MessageDialog with creation, property access, modality, open/close, and resource management functions. Adds a comprehensive C example demonstrating usage and updates build files to include the new example and API header.
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‎CMakeLists.txt‎

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@@ -15,6 +15,7 @@ add_subdirectory(examples/keyboard_example)
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add_subdirectory(examples/menu_example)
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add_subdirectory(examples/menu_c_example)
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add_subdirectory(examples/message_dialog_example)
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add_subdirectory(examples/message_dialog_c_example)
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add_subdirectory(examples/storage_example)
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add_subdirectory(examples/storage_c_example)
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add_subdirectory(examples/tray_icon_example)

‎examples/message_dialog_c_example/CMakeLists.txt‎

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cmake_minimum_required(VERSION 3.10)
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project(message_dialog_c_example VERSION 0.0.1 LANGUAGES CXX)
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# Set C++ standard
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set(CMAKE_CXX_STANDARD 17)
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set(CMAKE_CXX_STANDARD_REQUIRED ON)
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# Add example program
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add_executable(message_dialog_c_example
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"main.c"
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)
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# Link main library
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target_link_libraries(message_dialog_c_example PRIVATE nativeapi)
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# Set example program properties
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set_target_properties(message_dialog_c_example PROPERTIES
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OUTPUT_NAME "message_dialog_c_example"
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)
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# Set example program compile options (macOS only)
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if(APPLE)
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set_source_files_properties("main.c"
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PROPERTIES
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COMPILE_FLAGS "-x objective-c++"
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)
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endif()
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‎examples/message_dialog_c_example/main.c‎

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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "../../src/capi/application_c.h"
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#include "../../src/capi/message_dialog_c.h"
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#include "../../src/capi/string_utils_c.h"
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int main() {
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printf("=== MessageDialog C API Example ===\n\n");
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// Initialize application
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native_application_t app = native_application_get_instance();
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if (!app) {
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fprintf(stderr, "Failed to get application instance\n");
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return 1;
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}
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printf("Application instance obtained successfully\n\n");
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// Example 1: Create a simple informational dialog
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printf("1. Creating a simple informational dialog...\n");
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native_message_dialog_t info_dialog = native_message_dialog_create(
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"Information",
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"This is an informational message dialog.\n\n"
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"MessageDialog can be used to display various types of messages to users.");
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if (!info_dialog) {
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fprintf(stderr, "Failed to create informational dialog\n");
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return 1;
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}
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// Get and print dialog properties
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char* title = native_message_dialog_get_title(info_dialog);
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char* message = native_message_dialog_get_message(info_dialog);
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if (title) {
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printf("Dialog title: %s\n", title);
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free_c_str(title);
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}
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if (message) {
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printf("Dialog message: %s\n", message);
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free_c_str(message);
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}
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// Set modality to Application modal
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native_message_dialog_set_modality(info_dialog, NATIVE_DIALOG_MODALITY_APPLICATION);
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native_dialog_modality_t modality = native_message_dialog_get_modality(info_dialog);
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printf("Modality: %s\n",
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modality == NATIVE_DIALOG_MODALITY_APPLICATION ? "Application" : "Unknown");
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printf("Opening dialog...\n");
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if (native_message_dialog_open(info_dialog)) {
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printf("Dialog was opened successfully\n\n");
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} else {
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printf("Failed to open dialog\n\n");
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}
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// Clean up first dialog
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native_message_dialog_destroy(info_dialog);
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// Example 2: Create a warning dialog
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printf("2. Creating a warning dialog...\n");
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native_message_dialog_t warning_dialog = native_message_dialog_create(
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"Warning",
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"This is a warning message.\n\n"
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"Warning dialogs are used to alert users about potential issues.");
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if (warning_dialog) {
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native_message_dialog_set_modality(warning_dialog, NATIVE_DIALOG_MODALITY_APPLICATION);
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native_message_dialog_open(warning_dialog);
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native_message_dialog_destroy(warning_dialog);
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}
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printf("\n");
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// Example 3: Create a dialog with updated content
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printf("3. Creating a dialog with updated content...\n");
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native_message_dialog_t dynamic_dialog =
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native_message_dialog_create("Update Available", "Initial message");
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if (dynamic_dialog) {
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// Update the title and message before opening
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native_message_dialog_set_title(dynamic_dialog, "System Update");
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native_message_dialog_set_message(dynamic_dialog,
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"A new version of the application is available.\n\n"
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"Version 2.0 includes:\n"
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"• Improved performance\n"
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"• New features\n"
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"• Bug fixes\n\n"
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"Would you like to update now?");
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title = native_message_dialog_get_title(dynamic_dialog);
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if (title) {
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printf("Updated title: %s\n", title);
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free_c_str(title);
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}
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native_message_dialog_set_modality(dynamic_dialog, NATIVE_DIALOG_MODALITY_APPLICATION);
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printf("Opening updated dialog...\n");
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native_message_dialog_open(dynamic_dialog);
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native_message_dialog_destroy(dynamic_dialog);
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}
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printf("\n");
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// Example 4: Demonstrate different modality types
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printf("4. Demonstrating different modality types...\n");
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// Non-modal dialog
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native_message_dialog_t non_modal_dialog = native_message_dialog_create(
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"Non-Modal Dialog",
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"This dialog does not block interaction.\n\n"
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"The application continues running and users can interact with other windows.");
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if (non_modal_dialog) {
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native_message_dialog_set_modality(non_modal_dialog, NATIVE_DIALOG_MODALITY_NONE);
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modality = native_message_dialog_get_modality(non_modal_dialog);
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printf("Modality: %s (non-modal)\n",
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modality == NATIVE_DIALOG_MODALITY_NONE ? "None" : "Unknown");
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native_message_dialog_open(non_modal_dialog);
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native_message_dialog_destroy(non_modal_dialog);
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}
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// Application modal dialog
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native_message_dialog_t app_modal_dialog = native_message_dialog_create(
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"Application Modal",
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"This dialog blocks interaction with all windows in the current application.");
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if (app_modal_dialog) {
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native_message_dialog_set_modality(app_modal_dialog, NATIVE_DIALOG_MODALITY_APPLICATION);
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modality = native_message_dialog_get_modality(app_modal_dialog);
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printf("Modality: %s\n",
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modality == NATIVE_DIALOG_MODALITY_APPLICATION ? "Application" : "Unknown");
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native_message_dialog_open(app_modal_dialog);
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native_message_dialog_destroy(app_modal_dialog);
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}
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// Window modal dialog (behaves as Application on macOS)
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native_message_dialog_t window_modal_dialog = native_message_dialog_create(
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"Window Modal",
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"This dialog blocks interaction with a specific parent window.\n\n"
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"Note: On macOS, this behaves as Application.");
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if (window_modal_dialog) {
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native_message_dialog_set_modality(window_modal_dialog, NATIVE_DIALOG_MODALITY_WINDOW);
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modality = native_message_dialog_get_modality(window_modal_dialog);
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printf("Modality: %s\n", modality == NATIVE_DIALOG_MODALITY_WINDOW ? "Window" : "Unknown");
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native_message_dialog_open(window_modal_dialog);
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native_message_dialog_destroy(window_modal_dialog);
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}
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printf("\n=== MessageDialog C API Example Complete ===\n");
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printf("This example demonstrated:\n");
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printf("1. Creating MessageDialog instances\n");
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printf("2. Setting and getting title and message\n");
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printf("3. Updating dialog content programmatically\n");
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printf("4. Opening dialogs with different modality types (None, Application, Window)\n");
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printf("5. Modal vs non-modal dialog behavior\n");
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printf("6. Proper cleanup of dialog resources\n");
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printf("\nExiting MessageDialog C API Example...\n");
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return 0;
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}

‎include/nativeapi.h‎

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#include "../src/capi/image_c.h"
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#include "../src/capi/keyboard_monitor_c.h"
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#include "../src/capi/menu_c.h"
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#include "../src/capi/message_dialog_c.h"
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#include "../src/capi/preferences_c.h"
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#include "../src/capi/run_example_app_c.h"
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#include "../src/capi/secure_storage_c.h"

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